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Astapenko, D. "Automated system design optimisation." Thesis, Loughborough University, 2010. https://dspace.lboro.ac.uk/2134/6863.
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The focus of this thesis is to develop a generic approach for solving reliability design optimisation problems which could be applicable to a diverse range of real engineering systems. The basic problem in optimal reliability design of a system is to explore the means of improving the system reliability within the bounds of available resources. Improving the reliability reduces the likelihood of system failure. The consequences of system failure can vary from minor inconvenience and cost to significant economic loss and personal injury. However any improvements made to the system are subject to the availability of resources, which are very often limited. The objective of the design optimisation problem analysed in this thesis is to minimise system unavailability (or unreliability if an unrepairable system is analysed) through the manipulation and assessment of all possible design alterations available, which are subject to constraints on resources and/or system performance requirements. This thesis describes a genetic algorithm-based technique developed to solve the optimisation problem. Since an explicit mathematical form can not be formulated to evaluate the objective function, the system unavailability (unreliability) is assessed using the fault tree method. Central to the optimisation algorithm are newly developed fault tree modification patterns (FTMPs). They are employed here to construct one fault tree representing all possible designs investigated, from the initial system design specified along with the design choices. This is then altered to represent the individual designs in question during the optimisation process. Failure probabilities for specified design cases are quantified by employing Binary Decision Diagrams (BDDs). A computer programme has been developed to automate the application of the optimisation approach to standard engineering safety systems. Its practicality is demonstrated through the consideration of two systems of increasing complexity; first a High Integrity Protection System (HIPS) followed by a Fire Water Deluge System (FWDS). The technique is then further-developed and applied to solve problems of multi-phased mission systems. Two systems are considered; first an unmanned aerial vehicle (UAV) and secondly a military vessel. The final part of this thesis focuses on continuing the development process by adapting the method to solve design optimisation problems for multiple multi-phased mission systems. Its application is demonstrated by considering an advanced UAV system involving multiple multi-phased flight missions. The applications discussed prove that the technique progressively developed in this thesis enables design optimisation problems to be solved for systems with different levels of complexity. A key contribution of this thesis is the development of a novel generic optimisation technique, embedding newly developed FTMPs, which is capable of optimising the reliability design for potentially any engineering system. Another key and novel contribution of this work is the capability to analyse and provide optimal design solutions for multiple multi-phase mission systems. Keywords: optimisation, system design, multi-phased mission system, reliability, genetic algorithm, fault tree, binary decision diagram
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Kwon, Hyun Sik. "Development of Automated Design Tools for Automotive Automatic Transmission Gear System." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1370019857.
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Sharkey, Jeffrey Allen. "Automated radio network design using ant colony optimization." Thesis, Montana State University, 2008. http://etd.lib.montana.edu/etd/2008/sharkey/SharkeyJ0508.pdf.
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Radio networks can provide reliable communication for rural intelligent transportation systems (ITS). Engineers manually design these radio networks by selecting tower locations and equipment while meeting a series of constraints such as coverage, bandwidth, maximum delay, and redundancy, all while minimizing network cost. As network size and constraints grow, the design process can quickly become overwhelming. In this thesis we model the network design problem (NDP) as a generalized Steiner tree-star (GSTS) problem. Any solution to the minimum Steiner tree (MST) problem on a constructed GSTS graph will directly identify the tower locations and equipment needed to build the network at an optimal cost. The direct MST solution can only satisfy coverage constraints. Because the MST problem is known to be NP-hard, our research applies ant colony optimization (ACO) to find near-optimal MST solutions. Using ACO also allows us to meet bandwidth, maximum delay, and redundancy constraints. We verify that our approach finds near-optimal designs by comparing it against a 2-approximation algorithm in several different scenarios.
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Eaglesham, Mark A. "Automated storage and retrieval system design report." Master's thesis, Virginia Tech, 1995. http://hdl.handle.net/10919/43535.
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This report describes the design and operation of an Automated Storage and Retrieval System (AS/RS) to serve the Flexible Manufacturing and Assembly System (FMAS) in the Manufacturing Systems Laboratory at Virginia Tech. The system requirements of the AS/RS, justification of design choices, and the proposed modes of operating the system are described.
The AS/RS was designed to automatically move material on pallets between the storage racks in the laboratory to the FMAS conveyor interface. The system was designed and built, and has been tested to perform the desired operating functions. The scope of this project was limited to designing and installing the hardware component of the AS/RS, and testing it to ensure that it will satisfy the system requirements of the FMAS. The educational objective of the project is to enable fully automated control of all cell activities via the FMAS Computer Network.<br>Master of Science
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UjvaÌri, SaÌndor. "Simulation in automated guided vehicle system design." Thesis, De Montfort University, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.275545.
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O'Shea, Colleen Ruth 1981. "System design and requirements for Automated Law Review Submission System." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/29409.
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Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2004.<br>Includes bibliographical references (leaves 84-86).<br>The submission of manuscripts by Authors to Law Reviews is presently an inefficient process for both parties. The integration of technology allows for improvements to this process as can be seen in ExpressOTM and the Stanford Law Review's Electronic Submission System. The Automated Law Review Submission System (ALRSS) was developed to make the submission process even more efficient and effective than present systems allow. This is a software design thesis with emphasis on the System Requirements developed for the ALRSS. The method of developing System Requirements started with discussing the present process with Authors and Law Reviews and determining current needs of the users. Afterwards, a comparison among competitors was discussed to generate limitations of these systems and determine features to emulate for the development of ALRSS. Thirdly, a workflow model was created to examine internal issues of submission tracking and management within the Law Review to further automate the review process and make management of the process more effective. As a result, a more efficient and effective submission process is feasible for both the Author and Law Review by allowing processes to occur electronically from the Author submitting a manuscript to a Law Review Editor assigning or viewing a manuscript. In addition, with electronic tracking, time consuming communication regarding the submission status between the parties can be minimized. This submission system can be further customized for improved features or broader purposes in the future.<br>by Colleen Ruth O'Shea.<br>M.Eng.
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Jhumka, Arshad. "Automated design of efficient fail-safe fault tolerance." Phd thesis, [S.l.] : [s.n.], 2004. http://elib.tu-darmstadt.de/diss/000471.
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Schulz, André. "On the automated design of technical systems." [S.l. : s.n.], 2001. http://deposit.ddb.de/cgi-bin/dokserv?idn=964466201.
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Bury, Sarah E. "Development of an automated and integrated budgeting system." [Denver, Colo.] : Regis University, 2006. http://165.236.235.140/lib/sbury2006.pdf.
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Saadat, Huzaifa. "Design and development of an automated regression test suite for UEFI." Master's thesis, Universitätsbibliothek Chemnitz, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-159277.
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Unified Extensible Firmware Interface (UEFI) is an industry standard for implementing the basic firmware in the computers. This standard replaces BIOS. A huge amount of C code has been written for the implementation of UEFI. Yet there has been a very little focus on testing UEFI code. The thesis shows how the industry can perform a meaningful testing of UEFI. Spanning the test coverage with the help of test tools over all UEFI phases is a key objective. Moreover, techniques such as Test Driven Development and source code analysis are explained in terms of UEFI to make sure the bugs are minimized in the first place. The results show that the usage of test and analysis tools point to a large number of issues. Some of these issues can be fixed at a very early stage in the Software Development Life Cycle. For this reason the developers and testers should be convinced that they need to focus on testing UEFI from a software perspective.
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Proper, Ethan R. (Ethan Richard). "Automated classification of power signals." Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/44842.
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Thesis (Nav. E.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering; and, (S.M.)--Massachusetts Institute of Technology, System Design and Management Program, 2008.<br>Includes bibliographical references (p. 106-107).<br>The Non-Intrusive Load Monitor (NILM) is a device that utilizes voltage and current measurements to monitor an entire system from a single reference point. The NILM and associated software convert the V/I signal to spectral power envelopes that can be searched to determine when a transient occurs. The identification of this signal can then be determined by an expert classifier and a series of these classifications can be used to diagnose system failures or improper operation. Current NILM research conducted at Massachusetts Institute of Technology's Laboratory for Electromagnetic and Electronic Systems (LEES) is exploring the application and expansion of NILM technology for the use of monitoring shipboard systems. This thesis presents the ginzu application that implements a detect-classify-verify loop that locates the indexes of transients, identifies them using a decision-tree based expert classifier, and then generates a summary event file containing relevant information. The ginzu application provides a command-line interface between streaming preprocessed power data (PREP) and an included graphical user interface. This software was developed using thousands of hours of archived data from the Coast Guard Cutters ESCANABA (WMEC-907) and SENECA (WMEC-906). A validation of software effectiveness was conducted as the software was installed onboard ESCANABA.<br>by Ethan R. Proper.<br>S.M.<br>Nav.E.
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Morris, Janna L. Gravagne Ian A. "A networked embedded design for an automated exercise system." Waco, Tex. : Baylor University, 2007. http://hdl.handle.net/2104/5077.
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Okaeme, Nnamdi. "Automated robust control system design for variable speed drives." Thesis, University of Nottingham, 2008. http://eprints.nottingham.ac.uk/10584/.
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Traditional PI controllers have been largely employed for the control of industrial variable speed drives due to the design ease and performance satisfaction they provide but, the problem is that these controllers do not always provide robust performance under variable loads. Existing solutions present themselves as complex control strategies that demand specialist expertise for their implementation. As a direct consequence, these factors have limited their adoption for the industrial control of drives. To counter this trend, the thesis proposes two techniques for robust control system design. The developed strategies employ particular Evolutionary Algorithms EA), which enable their simple and automated implementation. More specifically, the EA employed and tested are the Genetic Algorithms (GA), Bacterial Foraging (BF) and the novel Hybrid Bacterial Foraging, which combines specific desirable features of the GA and BF. The first technique, aptly termed Robust Experimental Control Design, employs the above mentioned EA in an automated trial-and-error approach that involves directly testing control parameters on the experimental drive system, while it operates under variable mechanical loads, evolving towards the best possible solutions to the control problem. The second strategy, Robust Identification-based Control Design, involves a GA system identification procedure employed in automatically defining an uncertainty model for the variable mechanical loads and, through the adoption of the Frequency Domain H-infinity Method in combination with the developed EA, robust controllers for drive systems are designed. The results that highlight the effectiveness of the robust control system design techniques are presented. Performance comparisons between the design techniques and amongst the employed EA are also shown. The developed techniques possess commercially viable qualities because they elude the need for skilled expertise in their implementation and are deployed in a simple and automated fashion.
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Dymond, F. S. D. "Conceptual design of a fixtureless reconfigurable automated assembly system." Thesis, Stellenbosch : University of Stellenbosch, 2009. http://hdl.handle.net/10019.1/1941.
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Thesis (MScEng (Mechanical and Mechatronic Engineering))--University of Stellenbosch, 2009.<br>ENGLISH ABSTRACT: The conceptual design of a fixtureless reconfigurable automated spot welding
system for manufacturing subassemblies for residential circuit breakers was
investigated. This research was aimed at developing a possible low cost automation
alternative to a South African industrial manufacturer, which is presently heavily
dependent on personnel for manual assembly of their core products.
System reconfiguration allows for the assembly of a range of subassemblies with
geometric component variation on a given system configuration, as well as the
potential for the system to be reconfigured to assemble other ranges of circuit
breaker subassemblies.
The subassembly selected as focus consists of six different components, which vary
geometrically from one product variant to another. A fixtureless approach was
selected, to minimise reconfiguration down time and the need for reconfigurable
fixtures since reconfigurable fixtures have not found significant acceptance in
industry. This varies from a fixture-based approach, which was considered in related
research.
The conceptual assembly system presented here consists of the following modules:
a flexible vision based part feeder, twin 6 DOF robotic manipulators each with a
multipurpose gripper, and a stationary spot welding station. Critical conceptual
design elements were further investigated to refine their selection and confirm
feasibility with respect to the target industry application. This process ended with a
preliminary cost estimate which served as a basis for comparison between the
fixtureless, fixture-based and present manual assembly process. The fixtureless
concept was overall more expensive than the fixture-based concept, primarily
because of the limits to production throughput. The fixtureless concept was
however cheaper than the present manual assembly approach but had a far longer
payback period than desired by the industry. The complexity and possible
uncertainties of the concept combined with the long payback period indicated that
the fixtureless concept is not suitable for the target application.<br>AFRIKAANSE OPSOMMING: Die konsepsionele ontwerp van 'n setmaatlose herkonfigureerbare outomatiese
puntsweisstelsel vir die vervaardiging van subsamestellings van huishoudelike
stroombrekers is ondersoek. Hierdie navorsing is gemik op die ontwikkeling van 'n
moontlike lae koste outomatiese alternatief vir 'n Suid Afrikaanse industriële
vervaardiger, wat tans sterk afhanklik is van werkers wat die montering van hul kern
produkte met die handsamestelling doen. Stelsel herkonfigurasie laat die
samestelling van 'n reeks subsamestellings, met geometriese komponentvariasies,
op 'n gegewe stelsel toe, asook die potensiaal om die stelsel te herkonfigureer om
ander reekse van stroombreker-subsamestellings te monteer. Die subsamestelling
wat as fokus gekies is, bestaan uit ses verskillende komponente met geometriese
verskille van tussen produkvariante. 'n Setmaatlose benadering is gekies ten einde
aftyd vir herkonfigurasie en die noodsaaklikheid van herkonfigureerbare setmate te
minimeer, omdat laasgenoemde nie noemenswaardig deur die industrie aanvaar
word nie. Hierdie benadering verskil van 'n setmaat-gebaseerde benadering wat in
verwante navorsing ondersoek is.
Die konsepsionele monteringstelsel wat hier aangebied word, bestaan uit die
volgende modules: 'n plooibare, visiegebaseerde voerapparaat; dubbele sesvryheidsgraad
robotiese manipuleerders, elk met 'n veeldoelige gryper; en 'n
statiese puntsweisstasie. Kritiese elemente van die konseptuele ontwerp is verder
ondersoek om hul keuses te verfyn en uitvoerbaarheid in die teiken industriële
toepassing te bevestig. Hierdie proses is afgesluit deur 'n voorlopige kosteraming
wat gedien het as 'n basis vir die vergelyking van setmaatlose, setmaat-gebaseerde
en die huidige handsamestellingstelsels. Die setmaatlose konsep was oorhoofs
duurder as die setmaat-gebaseerde konsep, hoofsaaklik as gevolg van beperkings op
die produksie-deurset. Die setmaatlose konsep was egter goedkoper as die huidige
handmonteringsproses, maar het 'n veel langer terugbetalingstydperk as wat deur
die industrie verlang word. Die kompleksiteit en moontlike onsekerhede van die
konsep, gepaard met die lang terugbetalingstydperk, dui daarop dat die setmaatlose
konsep nie vir die teiken toepassing geskik is nie.
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Pickens, Mark Everett. "Design and Validation of an Automated Multiunit Composting System." Thesis, University of North Texas, 2009. https://digital.library.unt.edu/ark:/67531/metadc12184/.
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This thesis covers the design of an automated multiunit composting system (AMUCS) that was constructed to meet the experimental apparatus requirements of the ASTM D5338 standard. The design of the AMUCS is discussed in full detail and validated with two experiments. The first experiment was used to validate the operation of the AMUCS with a 15 day experiment. During this experiment visual observations were made to visually observe degradation. Thermal properties and stability tests were performed to quantify the effects of degradation on the polymer samples, and the carbon metabolized from the degradation of samples was measured. The second experiment used the AMUCS to determine the effect of synthetic clay nanofiller on the aerobic biodegradability behavior of poly (3-hydroxybutyrate-co-3-hydroxyvalerate).
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Pickens, Mark Everett Vaidyanathan Vijay Varadarajan. "Design and validation of an automated multiunit composting system." [Denton, Tex.] : University of North Texas, 2009. http://digital.library.unt.edu/ark:/67531/metadc12184.
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Lockwood, Stephen. "Design of an obstacle avoidance system for automated guided vehicles." Thesis, University of Huddersfield, 1992. http://eprints.hud.ac.uk/id/eprint/9285/.
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Most Industrial Automated Guided Vehicles CAGV s) follow fixed guide paths embedded in the floor or bonded to the floor surface. Whilst reliable in their basic operation, these AGV systems fail if unexpected obstacles are placed in the vehicle path. This can be a problem particularly in semi-automated factories where men and AGVs share the same environment. The perfonnance of line-guided AGVs may therefore be enhanced with a capability to avoid unexpected obstructions in the guide path. The research described in this thesis addresses some fundamental problems associated with obstacle avoidance for utomated vehicles. A new obstacle avoidance system has been designed which operates by detecting obstacles as they disturb a light pattern projected onto the floor ahead of the AGV. A CCD camera mounted under the front of the vehicle senses obstacles as they emerge into the projection area and reflect the light pattern. Projected light patterns have been used as an aid to static image analysis in the fields f Computer Aided Design and Engineering. This research extends these ideas in a real-time mobile application. A novel light coding system has been designed which simplifies the image analysis task and allows a low-cost embedded microcontroller to carry out the image processing, code recognition and obstacle avoidance planning functions. An AGV simulation package has been developed as a design tool for obstacle avoidance algorithms. This enables potential strategies to be developed in a high level language and tested via a Graphical User Interface. The algorithms designed using the simulation package were successfully translated to assembler language and implemented on the embedded system. An experimental automated vehicle has been designed and built as a test bed for the research and the complete obstacle avoidance system was evaluated in the Flexible Manufacturing laboratory at the University of Huddersfield.
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Peets, Sven. "Specification, design and evaluation of an automated agrochemical traceability system." Thesis, Cranfield University, 2009. http://dspace.lib.cranfield.ac.uk/handle/1826/4495.
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Traceability through all the stakeholders in food production is an issue of increasing importance, being specifically required by the regulations for food safety and quality (EC 178/2002), and for compliance with environmental protection. The agricultural market perceives a need for systems and technologies to automate the currently manual process of producing records of agrochemical inputs loaded into a spraying machine. A novel prototype Automated Agrochemical Traceability System (AACTS) to identify and weigh agrochemicals as they are loaded into crop sprayer has been designed, constructed, fitted to a machine and evaluated with commercial operators. The functional blocks of the system are a 13.56 MHz RFID reader, 1.4 litre self cleaning weighing funnel mounted on a 3 kg load cell, a user interface with a screen and three user command buttons (Yes, No, Back), and a progress bar made of 8 coloured LED’s (green, amber, red). The system is able to trace individual agrochemical containers, associate the product identity with national agrochemical databases, quantify the required amount of product, assist the sprayer operator and control workflow, generate records of sprayer inputs and interoperate with (recommending extensions to) task management standards as set out in ISO 11783-10. The evaluation of the quantity weighing has demonstrated that with such a system, the principal noise component is in the range of 33–83 Hz, induced by the operating tractor engine. A combined 3 Hz low pass digital filter with a second stage rolling mean of 5 values improves performance to allow a practical resolution of 1 gram (engine switched off) to 3.6 grams (sprayer fully operational) with a response appropriate to suit human reaction time. This is a significant improvement over the ±10 grams of the work of Watts (2004). An experiment with 10 sprayer operators has proved that in the majority of cases (92%) an accuracy equal or better than ±5% is achieved regardless of dispensing speed. The dispensed amounts (100.36% of target) and recorded (100.16%) are in accordance with prescribed values (100%; LSD(5%) 2.166%), where amounts dispensed by manual methods (92.61%) differ significantly from prescribed and recorded value (100%). The AACTS delivers a statistically similar work rate (211.8 s/task) as manual method (201.3 s/task; Δt = 10.5 s/task; LSD(5%) 28.2 s/task) in combined loading and recording cycle. Considering only the loading time (181.2 s/task) of manual method, the difference is 30.6 s/task (LSD(5%) 30.1 s/task). In practice this difference is believed to be marginal compared to the time required to load the water, random external events during the spraying session and in time moving, checking and storing paper records. The integrated weighing funnel concept is another significant improvement over previous work. Using this system, the mean duration of measuring per container for all tasks (34.0 s) is approximately half the time (68.5 s) achieved by Watts (2004). The AACTS was rated to be safer than the manual method regarding operator health and safety and risk of spillage. All operators who evaluated the AACTS were interested in purchasing such a system. The work confirmed that an RFID system was an appropriate media for agrochemical identification performing more than 250 product identification operations during operator tests without failure, with a speed of operation <1 s per cycle and reading distance of 100 mm. A specific format for RFID tag data is proposed for adoption, using low cost tags, that combines item level traceability with identification of products independently without access to worldwide databases. The AACTS follows ISO 11783 task management logic where a job is defined in a prepared electronic task file. It is proposed to extend the ISO 11783-10 task file to integrate the records provided by AACTS by handling the tank loads as individual products resulting from loading task and allocating them to spraying tasks. It is recommended to produce a production prototype following the design methodology, analysis techniques and performance drivers presented in this work and develop the features of user interface and records of tank content into software for ISO 11783-10 cabin task controller to deliver business benefits to the farming industry. The results with RFID encourage the adoption of RFID labelling of agrochemical containers. The reader may wish to read this thesis in parallel with Gasparin (2009) who has considered the business and industry adoption aspects of the AACTS.
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Riess, Brian Scott. "Design and development of an automated uranium pellet stacking system." Thesis, UOIT, 2009. http://hdl.handle.net/10155/25.
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A novel design for an automated uranium pellet stacking system is presented. This
system is designed to replace the manual method for stacking uranium pellets for
CANDU fuel bundles that is currently used at Cameco Fuel Manufacturing in Port Hope, ON. The system presented is designed as a drop-in solution to the current production line at Cameco. As a result, there are constraints that prevent certain parameters from modification.
The three main goals of this system are to reduce worker exposure to radiation to as
low as reasonably achievable, improve product quality, and increase the productivity of the production line. The proposed system will remove the workers from a position of having to handle the uranium pellets and physically place them on the stacks. While the natural uranium currently in production is not a major health risk for short-term exposure, the possibility of production of slightly enriched uranium bundles makes this system a real need. This system also removes the random pellet placement that the manual system uses by taking precise measurements using laser triangulation sensors.
These measurements are used to determine which sizes of end pellets are required to
complete the stack to within the specified tolerances. A final measurement is done to
ensure the stack is within tolerance. All of this information is recorded and can be
traced back to the stacks during quality inspection, which is a major improvement over
the existing system. This single automated system will replace two manual stations,
while increasing the total output production, thus eliminating pellet stacking as a bottleneck in the fuel bundle assembly process. Current production rates can be met
by this single, automated station in two shifts per day, while the current manual
process requires three shifts using two stations.
Test results of a proof-of-concept prototype indicate that the proposed design meets
or exceeds all of the design requirements.
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Erdahl, Dathan S. (Dathan Shane). "Design and implementation of an automated solder joint inspection system." Thesis, Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/19654.
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Hoarau, Eric 1974. "Design of an automated purification system for biologically-active macromolecules." Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/88896.
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Johnson, Deanna Heather. "Automated Time-Lapse Camera System (1356) Design, Build, and Implementation." Thesis, The University of Arizona, 2014. http://hdl.handle.net/10150/320167.
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Karlsson, Mikael. "An Evaluation of the Predictable System-on-a-Chip Automated System Design Flow." Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-186378.
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In spite of hard real-time embedded systems often being seemingly simple, modern embedded system designs often incorporate features such as multiple processors and complex inter-processor communication. In situations where safety is critical, such as in for instance many automotive applications, great demand is put on developers to prove correctness. The ForSyDe research project aims to remedy this problem by providing a design philosophy based on the theory of models of computation which aims to formally ensure predictability and correctness by design. A system designed with the ForSyDe design methodology consists of a well defined system model which can be refined by design transformations until it is mappable onto an application specific predictable hardware template. This thesis evaluates one such hardware template called the predictable System-on-a-Programmable-Chip. This hardware template was developed during the work on a masters thesis by Marcus Mikulcak [7] in 2013. The evaluation was done by creating many simple dual processor systems using the automated design flow provided by PSOPC. Using these systems, the time to communicate data between the processors was measured and compared against the claims made in [7]. The results presented in this thesis suggests that the current implementation of the PSOPC platform is not yet mature enough for production use. Data collected from many different configurations show that many of the generated systems exhibit unacceptable anomalies. Some systems would not start at all, and some systems could not communicate the data properly. Although this thesis does not propose solutions to the problems found herein, it serves to show that further work on the PSOPC platform is necessary before it can be incorporated into the larger context of the ForSyDe platform. However, it is the author’s genuine hope that the reader will gain appreciation for PSOPC as an idea, and that this work can instil interest into further working on perfecting it, so that it can serve as a part of ForSyDe in the future.<br>Även om hårda realtidssystem ofta verkar enkla så finner man i moderna inbyggda system numera ofta avancerade koncept såsom multipla processorer med komplicerad processor-till-processor-kommunikation. I situationer där säkerhet är ett kritiskt krav, som t.ex. i många applikationer inom bilindustrin, så föreligger enorma krav på de som utvecklar dessa system att kunna bevisa att systemen fungerar i enlighet med specifikationerna. Forskningsprojektet ForSyDe försöker lösa dessa problem genom att tillhandahålla en designfilosofi baserad på teorin om så kallade models of computation som via formella bevis kan garantera förutsägbarhet och korrekthet. Ett system designat med ForSyDes designmetodologi består av en väldefinierad modell av systemet som transformeras, tills dess den kan mappas mot en applikationsspecifik förutsägbar hårdvarumall. Detta examensarbete ämnar att utvärdera en sådan hårdvarumall som kallas predictable System-on-a-Programmable-Chip, eller PSOPC. Denna hårdvarumall utvecklades under arbetet med en masteruppsats av Markus Mikulcak [7] under året 2013. Utvärderingen bestod av skapandet av ett enkla tvåprocessorsystem med hjälp av PSOPCs automatiska designflöde. På dessa mättes sedan tiden för att kommunicera data mellan processorerna. Dessa kommunikationstider jämfördes sedan med de påståenden som görs i [7]. Resultaten som presenteras i detta examensarbete föreslår att nuvarande implementation av PSOPC-plattformen inte ännu uppnått tillräcklig mognad för att kunna användas i verkliga tillämpningar. De data som insamlats från många olika systemkonfigurationer visar att många av de genererade systemen uppvisar oacceptabla avvikelser. Några system startade inte ens och några klarade inte av att kommunicera data på ett korrekt sätt. Även om detta arbete inte föreslår några lösningar på de problem som presenteras häri så visar det på behovet av mer arbete med PSOPC-plattformen innan den kan bli en del av hela ForSyDe. Men, det är författarens genuina förhoppning att läsaren förstår de positiva aspekterna av PSOPC som idé, och att detta arbetet kan ingjuta intresse för att arbeta vidare med plattformen, så att den i framtiden kan bli en integral del i ForSyDe.
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Hwang, Yves. "An automated software design synthesis framework." University of Western Australia. School of Electrical, Electronic and Computer Engineering, 2009. http://theses.library.uwa.edu.au/adt-WU2009.0157.
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This thesis presents an automated software design synthesis framework known as Project Calliope. This framework aligns with Harel's automated software development process as it addresses the aspect of automating design and implementation. Project Calliope is based on a Statecharts synthesis approach in the literature. The main goal of Project Calliope is to automatically generate testable Unified Modeling Language (UML) Statecharts that are deterministic, visually manageable and UML compliant. In order to minimise design errors in the generated UML Statecharts, Project Calliope supports model checking through Statecharts execution. In addition, executable code is automatically generated based on the synthesised UML Statecharts. This framework seeks to provide a pragmatic design framework that can be readily incorporated into software development methodologies that leverage UML. In this thesis, Project Calliope is applied to three simple applications from Whittle and Schumann's examples and a case study based on a commercial application. They are automatic teller machine, coffee dispenser, an agent application, and a groupware application respectively.
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Jayaraman, Arun. "Use of simulation-animation techniques in the design of an automated guided vehicle system." Master's thesis, This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-04272010-020111/.
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Premi, Sonjoy Kumar. "The design of a free-ranging automated guided vehicle (AGV) system." Thesis, Imperial College London, 1985. http://hdl.handle.net/10044/1/37820.
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Cheng, Siew Bang. "Exploring design and detection issues for automated multichannel microfluidic immunoassay system." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/NQ60283.pdf.
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Ziegler, Andrew Glenn. "The design and fabrication of an automated shear stud welding system." Thesis, Massachusetts Institute of Technology, 1988. http://hdl.handle.net/1721.1/17230.
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Self, Lance P. L. "Object-Oriented Design of a Windows™ Based Automated Telemetry System." International Foundation for Telemetering, 1995. http://hdl.handle.net/10150/608405.
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International Telemetering Conference Proceedings / October 30-November 02, 1995 / Riviera Hotel, Las Vegas, Nevada<br>This paper illustrates a Windows computer application program which uses the
object-oriented paradigm as a basis. The objective of the application program is
to control the setup of equipment involved in routing a telemetry signal. This
design uses abstract classes as high level building blocks from which site
specific classes are derived. It is the next generation to the software portion of a
system described by Eugene L. Law. The object-oriented design method, as
presented by Grady Booch in his book Object-Oriented Analysis and Design
with Applications, is the design tool.
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Venkatachalam, Vallabh. "Design and development of an automated rat trap for sewage system." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-301915.
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This thesis report describes the design and development of an automated rat trap for sewage system. This rat trap has been designed to have a working duration of 2 months or approximately 15749 hits with trap dimensions length 535 mm, width 430 mm and a height range of 931 – 1151 mm with respect to different sewer pipe diameters. The trap weighs about 16.46 kg without the battery, pipe connectors and support connections. The trap has a response time range between 0.027 – 0.095 seconds with a striking pressure range between 16.05 – 56.19 MPa at the kill pad. The trap has a modular design to be able, to fit into different sewer pipe dimeters (100, 150, 160, 200, 225, 250, 300, 350 mm). The materials and components used for the rat trap satisfy all the requirement classifications such as working temperature, resistance to moisture and dirt, resistance to corrosion and ATEX classification. This rat trap design will be further used by Nomor AB to prototype and test it according to the Naturvårdsverket (Swedish Environmental Protection Agency) guidelines and regulations. A background study on brown rat physical characteristics and habitat, rat biology and existing trap technology were performed to set the trap’s requirement specifications in order to develop concepts. Furthermore, this thesis report concludes to a proposed evaluated trap design concept and its detailed design with analytical calculations of its motor specifications, gear box selection, trap speed, impact forces, trigger spring specifications and trap battery capacity. In addition to, a number of easily available market trap components have been studied and selected to aid with the prototyping. The critical components of the rat trap have been identified in order to validate the structural integrity of the design by finite element analysis. Finally, this report includes future work recommendations for the automated sewage rat trap. This automated sewage rat trap is a unique modular design and will help to control the ever-increasing rat population in one of its most safe habitats and is a stepping stone for more advanced sewage rat traps in the future.<br>Detta examensarbete beskriver utformning och utveckling av en automatiserad råttfälla för avloppssystem. Denna råttfälla har utformats för att ha en arbetstid på 2 månader eller cirka 15 749 träff med mått längd 535 mm, bredd 430 mm och ett höjdintervall på 931 - 1151 mm med avseende på olika avloppsrörsdiametrar. Fällan väger cirka 16,46 kg utan batteri, röranslutningar och stödanslutningar. Fällan har ett svarstidsintervall mellan 0,027 - 0,095 sekunder med ett slående tryckintervall mellan 16,05 - 56,19 MPa vid dödplattan. Fällan har en modulär design för att kunna monteras i olika avloppsrörsdimetrar (100,150,160,200,225,250,300,350 mm). Materialen och komponenterna som används för råttfällan uppfyller alla kravklassificeringar som arbetstemperatur, motståndskraft mot fukt och smuts, korrosionsbeständighet och ATEX-klassificering. Denna råttfälla kommer att användas ytterligare av Nomor AB för att testa den enligt Naturvårdsverket (Naturvårdsverket) riktlinjer och föreskrifter. En bakgrundsstudie om bruna råttarsfysiska egenskaper och livsmiljö, råttbiologi och befintlig teknologi utfördes för att ställa in fällans kravspecifikationer och för att utveckla ett koncept. Vidare avslutas denna avhandlingsrapport med ett föreslaget utvärderat fällesignkoncept och dess detaljerade konstruktion med analytiska beräkningar av dess motorspecifikationer, val av växellåda, fällhastighet, slagkrafter, dragfjäderspecifikationer och fällbatterikapacitet. Dessutom har ett antal lättillgängliga marknadskällkomponenter studerats och valts ut för att underlätta prototyptillverkning. De kritiska komponenterna i råttfällan har identifierats för att validera konstruktionens integritet med ändlig elementanalys. Slutligen innehåller denna rapport framtida arbetsrekommendationer för den automatiska avloppsråttfällan. Denna automatiserade avloppsråttfälla är en unik modulär design och hjälper till att kontrollera den ständigt ökande råttpopulationen i en av sina mest säkra livsmiljöer och är en språngbräda för mer avancerade avloppsråttfällor i framtiden.
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De, Villiers Jason. "Design and application of an automated system for camera photogrammetric calibration." Doctoral thesis, University of Cape Town, 2015. http://hdl.handle.net/11427/15519.
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This work presents the development of a novel Automatic Photogrammetric Camera Calibration System (APCCS) that is capable of calibrating cameras, regardless of their Field of View (FOV), resolution and sensitivity spectrum. Such calibrated cameras can, despite lens distortion, accurately determine vectors in a desired reference frame for any image coordinate, and map points in the reference frame to their corresponding image coordinates. The proposed system is based on a robotic arm which presents an interchangeable light source to the camera in a sequence of known discrete poses. A computer captures the camera's image for each robot pose and locates the light source centre in the image for each point in the sequence. Careful selection of the robot poses allows cost functions dependant on the captured poses and light source centres to be formulated for each of the desired calibration parameters. These parameters are the Brown model parameters to convert from the distorted to the undistorted image (and vice versa), the focal length, and the camera's pose. The pose is split into the camera pose relative to its mount and the mount's pose relative to the reference frame to aid subsequent camera replacement. The parameters that minimise each cost function are deter- mined via a combination of coarse global and fine local optimisation techniques: genetic algorithms and the Leapfrog algorithm, respectively. The real world applicability of the APCCS is assessed by photogrammetrically stitching cameras of differing resolutions, FOVs and spectra into a single multi- spectral panorama. The quality of these panoramas are deemed acceptable after both subjective and quantitative analyses. The quantitative analysis compares the stitched position of matched image feature pairs found with the Shape Invariant Feature Tracker (SIFT) and Speeded Up Robust Features (SURF) algorithms and shows the stitching to be accurate to within 0.3°. The noise sensitivity of the APCCS is assessed via the generation of synthetic light source centres and robot poses. The data is realistically created for a hy- pothetical camera pair via the corruption of ideal data using seven noise sources emulating the robot movement, camera mounting and image processing errors. The calibration and resulting stitching accuracies are shown to be largely independent of the noise magnitudes in the operational ranges tested. The APCCS is thus found to be robust to noise. The APCCS is shown to meet all its requirements by determining a novel combination of calibration parameters for cameras regardless of their properties in a noise resilient manner.
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Wampler, Steven Glenn. "Development of a CAD system for automated conceptual design of supersonic aitcraft." Thesis, Virginia Tech, 1988. http://hdl.handle.net/10919/40935.
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<p>Development of a conceptual aircraft design system based on ACSYNT, an aircraft synthesis program
written by the NASA Ames Research Center; is discussed. The system, named
ACSYNT/VPI, was written using the PHIGS graphics standard for machine independence and
designed based on top·down principles and standards. A functional description of ACSYNT is
presented as well as detailed software requirements for ACSYNT/VPI. The softwareâ s design is
covered in depth including design philosophies and software functional specifications. Program
output and design results are presented in conjunction with project recommendations. The appendices
include supporting design and development information.</P<br>Master of Science
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Stanford, Joseph S. M. (Joseph Marsh) Massachusetts Institute of Technology. "Possible futures for fully automated vehicles : using scenario planning and system dynamics to grapple with uncertainty." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/105319.
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Thesis: S.M. in Engineering and Management, Massachusetts Institute of Technology, Engineering Systems Division, 2015.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 146-148).<br>It is widely expected that fully automated vehicles (also commonly referred to as "driverless" or "self-driving" cars) will significantly change transportation systems in the United States and around the world. By reducing or eliminating many of the costs and disincentives of travel by automobile, these vehicles may have the potential to radically alter many of the inherent dynamics that have governed transportation systems since the advent of the automobile. To date, however, there has been very little structured analysis of these potential changes. Most of the existing literature addresses the technical challenges facing vehicle automation technology or considers immediate effects on the transportation system, usually analyzing single effects in isolation. Very little attention appears to have been paid to multiple simultaneous interactions that may occur across the transportation system and potential feedback effects that may arise among elements of the system. This thesis examines how the transportation system might react to the widespread introduction of fully automated vehicles (AVs), specifically considering how these reactions will affect total usage of automobiles, as measured by vehicle miles traveled (VMT). For the purpose of this thesis, the system boundary is broadly drawn-potential system responses are considered within the transportation system itself (consisting of existing users, vehicles, and infrastructure) and the "macro-system" (which includes broader economic, regulatory, social, and political dimensions). To address the wide range of uncertainties involved, scenario-planning techniques are used to develop and explore three scenarios that span a range of important variables. Within each scenario, system dynamics methodology is used to explore potential system reactions to the scenario assumptions and to consider the ultimate implications for VMT. The main insight from this analysis is that unstable responses (rapid movement to the extremes) appear more likely than steady transitions to "moderate" states. When the scenarios assume behavior can change substantially, the structure of the system suggests either that strong and growing forces will cause automobiles to become even more dominant over other modes than they are today (and VMT will rise dramatically), or public transit will become increasingly more appealing and assume a growing role (and VMT will drop substantially). The challenge of predicting the underlying behavioral changes is substantial: Who can say with any certainty how people will use a technology that provides point-to-point, self-directed, self-scheduled travel, with no requirement for attention or effort by a human occupant, potentially at higher speeds, in greater comfort, and with safer operation than today's automobiles? There are simply not enough existing data and no precedent for such analysis. Given the potential for unstable outcomes, depending on the desired outcome, it may be critical for policy-makers to consider the initial conditions of AV deployment, as these may have a substantial impact on the transportation system over the long term.<br>by Joseph Stanford.<br>S.M. in Engineering and Management
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Odajima, Ryo S. M. Massachusetts Institute of Technology. "Designing highly automated safety-critical railway system and its organization." Thesis, Massachusetts Institute of Technology, 2019. https://hdl.handle.net/1721.1/122433.
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Thesis: S.M. in Engineering and Management, Massachusetts Institute of Technology, System Design and Management Program, 2019<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 269-277).<br>High-speed rail (HSR) has improved dramatically since its launch in 1964 in terms of its technical aspects such as speed and reliability, thanks to technical developments including the automation of the train operation. At the same time, safety has become an increasingly critical aspect as the severity of the accidents has become much more severe. Although the automation and newly developed software might have decreased the number of accidents that would not have been prevented without them, they also have introduced new types of hazards and accidents that did not exist before due to the increased level of complexity of the whole system. These hazards include system design errors, component interactions accidents, or software-related errors due to the increased number of interfaces and coordination among internal and external stakeholders and higher dependency on automation and software.<br>Thus eliminating component failures should not be the only design consideration or priority, and more consideration should be given to eliminating coordination or design errors that would not be solved by redundancy for the sake of reliability improvement. This thesis mainly focuses on analyzing the past accidents caused by systematic failures and provides recommendations and considerations for designing and operating highly automated complex safety-critical railway systems. Often, the accident analysis finishes once someone is found to be responsible, but this thesis focuses on figuring out why they behaved that way by using the STAMP framework, which is based on systems theory, documenting the systemic factors which contributed to the accidents. The analysis thus looks into not only physical systems but also organizational aspects, such as management, organization culture, and other social-technical aspects.<br>Two accident analyses revealed causal factors on every level of the organization, including policy makers, audit authority, management, human operators and engineers, physical systems, and so on. In addition, the analyses provide the conceptual explanation of how the systems migrate into an unsafe state over time. The set of knowledge learned through the analyses is summarized as 35 lessons learned. These lessons are of use for future considerations in designing highly-automated safety-critical railway systems and their organization.<br>by Ryo Odajima.<br>S.M. in Engineering and Management<br>S.M.inEngineeringandManagement Massachusetts Institute of Technology, System Design and Management Program
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Williams, Robert Francis. "The theory, design, development and evaluation of the MarkIT automated essay grading system." Thesis, Curtin University, 2011. http://hdl.handle.net/20.500.11937/1870.
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The research presented in this exegesis relates to the design, development and testing of a new Automated Essay Grading (AEG) system. AEG systems make use of Information Technology (IT) to grade essays. The major objective for AEG system developers is to build systems that grade as well as, or exceed the accuracy of, human graders.This research discusses the main theories that currently underpin existing systems. It then discusses a new theoretical concept, the Normalised Word Vector (NWV), which has been developed and tested during this research. This exegesis also synthesises into a cohesive discourse seven of the author’s papers on the NWV and related issues published during the period 2002 to 2007. The papers can be grouped into three themes as follows: the theory of NWV and related matters, the development of the system, and the testing of the system.Thirteen existing AEG systems have been identified in this research. Each system has its own set of unique features; some focus on grading for essay writing style, others for essay content, and others attempt to consider both aspects in assigning a score to an essay. The type and amount of feedback on an essay also varies amongst the systems; some provide feedback on essay mechanics and others provide feedback on missing content. The MarkIT system described in this exegesis primarily grades for essay content, with a secondary focus on style. It has the unique feature, which distinguishes it from the other systems, of providing interactive visual feedback on essay content. This enables the teacher and student to discuss how the essay can be improved to obtain a higher grade.In brief, the theory of the NWV is as follows. The words in an essay are ‘normalised’ to their root concepts in a thesaurus. The number of times these concepts occur in the essay (the counts) are then used to build the coordinates of the vector in the vector space induced by all the concepts in the thesaurus. This adaptation of the theory used for many years in the document retrieval industry enables very fast comparison of essay content, and enables MarkIT to grade in real time.In essence the system works by mathematically modelling, using multiple linear regression, the grading criteria used by human graders for a given essay. These criteria are extracted from a set of training essays, and include items such as the number of words, the number of nouns, the number of verbs, the number of adjectives, and the number of adverbs. The model is then used to grade the essays not previously graded by humans. It does this by measuring the predictor factors in the ungraded essays, and then applying the multiple regression equation. The cosine of the angle between the NWV for a student essay and the NWV for a model answer is often one of the significant predictor variables.The system has been tested with 390 Year 10 high school essays, of about 400 words in length, on the topic of ‘The School Leaving Age’. The correlation of grades amongst the human graders was 0.81, and the system scores matched this correlation of the human graders.
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Byström, Markus. "Design and realisation of an automated software testing system utilizing virtual machines." Thesis, KTH, Skolan för datavetenskap och kommunikation (CSC), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-154480.
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Modern mjukvara körs ofta i många olika miljöer vilket ställer höga krav på testning och kvalitetssäkring. Mjukvara som löpande förvaltas måste testas regelbundet för att säkerställa kompatibiliteten till de miljöer eller plattformar som den används i. Detta kan knyta upp stora mängder resurser i form av mantimmar för testare och hårdvarutillgänglighet. Genom att testa virtuellt är det möjligt att automatisera stora delar av processen på ett enkelt sätt och i och med det effektivisera testningen. I det här examensarbetet designades, implementerades och utvärderades ett automatiserat testsystem som utnyttjar virtuella maskiner åt Scania på avdelningen för Diagnostic Communication and Software Download, RESC. Det implementerade testsystemet möjliggjorde dagliga regressions- och installationstester på alla de plattformar som mjukvarukomponenten SCOMM, Scania Communication Module, används i. Vissa smärre svårigheter märktes av som att några Windows-versioner uppförde sig på lite olika sätt angående rättigheter och beteende samt att det trots den låga overheaden i de virtuella maskinerna kunde uppstå timingproblem i ett fåtal testfall, vilket ledde till att de stundtals kunde misslyckas. Genom att parallellt köra tester i olika operativsystem kunde flera tester utföras på kortare tid än förut. Testtillförlitligheten ökade också i och med att alla testkörningar varje gång kunde utgå från samma tillstånd av de virtuella maskinerna. Arbetstiden för installation och underhåll av testmiljön kan minskas i och med att många virtuella maskiner kan samexistera på en fysisk maskin.<br>Modern software is often run in many different environments which puts high demands on testing and quality assurance. Continuous testing of software during the software development cycle is necessary in order to ensure the compatibility between the software and the different environments or platforms in which the software is used. This may require signicant resources in the form of man hours for testers and hardware availability. By testing in virtual environments it is possible to automate most of this process in an easy way and thus make testing more efficient. In this master thesis an automated test system utilizing virtual machines was designed, implemented and evaluated for Scania at its department for Diagnostic Communication and Software Download, RESC. The implemented test system enabled regression and installation testing of the software component SCOMM, Scania Communication Module, to be performed on all the supported platforms on a daily basis. Some minor difficulties were experienced such as some versions of the Windows operating system behaving differently regarding to permissions and operation and also that despite the low overhead of the virtual machine some timing issues were noticed in a few test cases which led them to intermittently fail. By testing software in different operating systems in parallel, it was possible todo more testing in less time than before. Testing reliability was increased due to every test starting from a known state of the virtual machines. The time spent on setup and maintenance of the testing environment can be decreased since multiple virtual machines can co-exist on one physical machine.
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Bladh, Anna. "System Design of Automated Test Equipment for Electrical Control Units in Trucks." Thesis, KTH, Mikro- och nanosystemteknik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-157531.
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The high level of complexity in today’s electronic systems increases the demands on an advanced validation and verification process. Automated testing facilitates and improves regression testing (rerun of previously executed test cases to uncover and track new bugs) with increased coverage and reduced costs as a result. A vehicle contains multiple control units, each responsible for a specific part: the engine, brakes, gearbox etc. These intelligent systems must be tested thoroughly to ensure correct behavior - both under normal circumstances and when the vehicle is exposed to unexpected events such as electrical failure (short circuit, broken cables etc.). A breakout box, BOB, is a piece of testing equipment that can be used to induce electrical faults on the wiring of the control units. It is typically operated manually. The objective of this project is to develop an automated version, an ABOB. A prototype that could induce various faults on arbitrary cables of a control unit was developed. The faults were: short circuit to a variable voltage source with connected or disconnected load, replacement of real signals with simulated ones and open load. The breakout box also performed internal measurements and supplied the user with feedback information about whether or not the test case was successfully executed. Several generations of the system were developed, where the final product had hardware support for up to six connected ECU ports and the possibility to distribute control signals to 256 different ECU ports via a computer based application and a set of communicating microprocessors. This thesis project focuses on the software design of the ABOB. For further explanation of the hardware, the reader is advised to consult the report Hardware Synthesis of Automated Electrical Fault Testing in Trucks by Martin Orre.<br>Komplexiteten i dagens elektroniska system ställer höga krav på verifierings- och valideringsmetoder. Testautomatisering underlättar och förbättrar regressionstestning (upprepning av tidigare utförda testfall för att upptäcka och spåra nya buggar) med ökad testtäckning och reducerade kostnader som följd. I ett fordon sitter ett flertal styrenheter vars ansvarsområden varierar: styrning utav motor, bromsar, växellåda osv. För att säkra att dessa enheter fungerar som de ska måste de testas noggrant - dels under normala förhållanden men också då de utsätts för påfrestningar såsom elektriska fel (kortslutning, avbrott osv.). En breakout box, BOB, är en typ av testutrustning vars syfte är att inducera fel på kablaget till styrenheter. Den sköts vanligtvis manuellt. Syftet med det här projektet är att ta fram en automatiserad breakout box, en ABOB. En prototyp som kunde inducera ett antal olika fel på godtyckliga kablar kopplade till en styrenhet togs fram. Felen var: kortslutning mot en variabel spänningskälla, simulering av en felaktig signal samt avbrott på kabel. Systemet hade också en återkopplingsmekanism som informerade användaren om huruvida ett testfall hade exekverats på korrekt sätt eller ej. Ett flertal generationer av hård- och mjukvarulösningar utvecklades, där den slutgiltiga produkten hade hårdvarustöd för upp till sex inkopplade ECU-portar och möjlighet att via en datorbaserad applikation samt ett nät av kommunicerande mikroprocessorer distribuera styrsignaler till upp till 256 ECU-portar. Detta examensarbete behandlar framtagningen av mjukvara för systemet. Den intresserade läsaren rekommenderas att även ta del av rapporten Hardware Synthesis of Automated Electrical Fault Testing in Trucks av Martin Orre, för kompletterande information om hårdvaran.
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Bloom, Dylan C. "Design and Verification of a LabVIEW Automated Antenna Radiation Pattern Measurement System." DigitalCommons@CalPoly, 2018. https://digitalcommons.calpoly.edu/theses/1916.
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In 2014, Toyon Research Corporation donated a 6’x6’x8’ anechoic chamber to the Cal Poly EE department to advance student education in the areas of antennas and wireless communications. An anechoic chamber is a room designed to suppress electromagnetic radiation reflections so that accurate measurement of radio frequency (RF) systems such as wireless radios and antennas can take place. Despite the fact that Cal Poly already has a larger anechoic chamber, primarily used for antenna characterization, it is the purpose of this project to design, code, and equip the new chamber so that it performs at least as good, or better than, the existing chamber.
Radiation pattern is a key characteristic that describes the directionality or gain of an antenna, and it is important for quantifying and qualifying how an antenna will perform as part of a wireless communication system. Radiation pattern measurement can be time consuming because it requires measuring an antenna’s transmission or reception in in all directions. In both the old and new antenna measurement systems (AMS), a vector network analyzer (VNA) measures signals transmitted between the antenna under test (AUT) and an RF field probe within the antireflective environment of the anechoic chamber. The new system synchronizes VNA measurement with the rotation of the AUT using the automation software LabVIEW and a Sunol Sciences FS-121 antenna positioner. Then, Matlab plots the data collected by LabVIEW as well as calculates useful antenna metrics including half power beam width (HPBW) and directivity. LabVIEW also makes the AMS easy to operate because of its graphical user interface.
The new anechoic chamber completes measurements faster than Cal Poly’s existing chamber, with good accuracy and ease of use. The new chamber works best with smaller antennas at frequencies up to 6 GHz and beyond. Radiation patterns have good SNR, and match with simulations and measurements done in the larger chamber. However, due to its smaller size the new AMS is not a replacement for the existing larger system when testing antennas larger than 1 m or at frequencies below 2 GHz.
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Ryu, Kyeong Keol. "Automated Bus Generation for Multi-processor SoC Design." Diss., Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/5076.
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In the design of a multi-processor System-on-a-Chip (SoC), the bus architecture typically comes to the forefront because the system performance is not dependent only on the speed of the Processing Elements (PEs) but also on the bus architecture in the system. An efficient bus architecture with effective arbitration for reducing contention on the bus plays an important role in maximizing performance. Therefore, among many issues of multi-processor SoC research, we focus on two issues related to the bus architecture in this dissertation. One issue is how to quickly and easily design an efficient bus architecture for an SoC. The second issue is how to quickly explore the design space across performance influencing factors to achieve a high performance bus system.
The objective of this research is to provide a Computer-Aided Design (CAD) tool with which the user can quickly explore System-on-a-Chip (SoC) bus design space in search of a high performance SoC bus system. From a straightforward description of the numbers and types of Processing Elements (PEs), non-PEs, memories and buses (including, for example, the address and data bus widths of the buses and memories), our Bus Synthesis tool, called BusSynth, generates a Register-Transfer Level (RTL) Verilog Hardware Description Language (HDL) description of the specified bus system. The user can utilize this RTL Verilog in bus-accurate simulations to more quickly arrive at an efficient bus architecture for a multi-processor SoC.
The methodology we propose gives designers a great benefit in fast design space exploration of bus systems across a variety of performance influencing factors such as bus types, PE types and software programming styles (e.g., pipelined parallel fashion or functional parallel fashion). We also show that BusSynth can efficiently generate bus systems in a matter of seconds as opposed to weeks of design effort to integrate together each system component by hand. Moreover, unlike the previous related work, BusSynth can support a wide variety of PEs, memory types and bus architectures (including a hybrid bus architecture) in search of a high performance SoC.
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Sugishita, Satomi H. "System Design Quality and Efficiency of System Analysts: An Automated CASE Tool Versus a Manual Method." UNF Digital Commons, 1992. http://digitalcommons.unf.edu/etd/75.
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The purpose of the current research study is to find out if CASE tools help to increase the software design quality and efficiency of system analysts and designers when they modify a system design document. Results of the experimental data analysis show that only the experience level of subjects had an effect on quality of their work. Results indicated that the design methods, either CASE tools or manual, do not have a significant effect on quality of the modification task nor the efficiency of system analysts and designers.
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Song, Chen S. M. Massachusetts Institute of Technology. "Improving the efficiency of an automated manufacturing system through a tri-part approach." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/82416.
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Thesis (S.M.)--Massachusetts Institute of Technology, Computation for Design and Optimization Program, 2013.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 71-72).<br>This research investigates a complex automated manufacturing system at three levels to improve its efficiency. In the system there are parallel loops of stations connected by a single closed conveyor. In each loop there are a series of identical stations, each with multiple storage slots and with capability to process several jobs simultaneously. At the system level we undertake capacity planning and explore Work-in-Process (WIP) control. We build an Excel model to calculate the implied load of each station, applying the model to sensitivity analyses of the system capacity. In addition, we identify a concave relationship between output and WIP based on actual factory data from our industrial partner. We surprisingly observe a reduction in output when WIP is high. Therefore, we suggest adopting a CONWIP policy in the system in order to increase and smooth the output. At the loop level we study the assignment policy. The complexity of this study is highlighted by non-trivial travel time between stations. We build a simulation model in Matlab to compare different assignment policies. The objective is to find the assignment policy that balances the station load, decreases the flow time for jobs, and reduces the rejection or blockage rate for the system. At the station level we investigate the holding time between simultaneous processes. We model this as a semi-Markov process, building a simulation model in Matlab to confirm the analytical results. We discover a tradeoff between flow time and production rate with different holding times, and propose new holding rules to further improve station performance. The conclusions from this research are useful for our industrial partner in its efforts to improve the operation of the system and to increase its capacity. Moreover, the methodologies and insights of this work can be beneficial to further research on related industry practice.<br>by Chen Song.<br>S.M.
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Beargie, Aimee M. "Sliding mode control of a non-collocated flexible system." Thesis, Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/19306.
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Naik, Pranab Sabitru. "Design and implementation of a fully automated real-time s-parameter imaging system." Thesis, Click to view the E-thesis via HKUTO, 2004. http://sunzi.lib.hku.hk/hkuto/record/B30708758.
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PASSOS, ALEX SANDRO BARBOSA. "DESIGN AND DEVELOPMENT OF THE MECHANICAL SYSTEM OF AN AUTOMATED BLOOD BIOCHEMISTRY ANALYZER." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 1992. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=19777@1.
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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>Buscando oferecer aos laboratórios de bioquímica sanguínea um meio rápido e seguro na execução de exames, desenvolveu-se o projeto de sistemas mecânicos de um equipamento que realiza rotinas automáticas de exames de bioquímica sanguínea.
Com esse objetivo selecionou-se, entre várias alternativas, uma configuração de montagem dos sistemas mecânicos.
Esse sistema mecânico é parte do equipamento, juntamente com o sistema eletrônico de acionamento, além de um sistema ótico para análise espectrofotométrica.<br>In the sake of offering to blood biochemical labs, a fast and safe way to do the exams, a mechanical system of an equipment that carries out automatically the routines of testing was designed and developed.
With this objective, among many other alternatives, a configuration of the mechanical system was chosen. This mechanical system is a part of the equipment together with the electronical system of command and work, and also an optical system for the spectrophotometric analysis.
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Hou, William M. "Conceptual design of an automated system for emplacement and retrieval of nuclear waste." Thesis, Massachusetts Institute of Technology, 1987. http://hdl.handle.net/1721.1/84194.
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Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1987.<br>MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING.<br>Title as it appeared in Massachusetts Institute of Technology Graduate List February 1987: Conceptual design of an automated system for underground emplacement and retrieval of nuclear waste.<br>Bibliography: leaves 83-85.<br>by William M. Hou.<br>M.S.
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Srnoyachki, Matthew R. "Automated Drilling Application for Autonomous Airfield Runway Surveying Vehicles: System Design and Validation." University of Dayton / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1544537004159348.
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Killing, Jonathan. "Design and development of an intelligent neuro-fuzzy system for automated visual inspection." Thesis, Kingston, Ont. : [s.n.], 2007. http://hdl.handle.net/1974/443.
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Melega, Nicola <1980>. "Design, assembly and test of an airborne automated imaging system for environmental monitoring." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2010. http://amsdottorato.unibo.it/3030/1/Melega_TESI_PhD.pdf.
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Melega, Nicola <1980>. "Design, assembly and test of an airborne automated imaging system for environmental monitoring." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2010. http://amsdottorato.unibo.it/3030/.
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Danishvar, Morad. "Modelling and design of the eco-system of causality for real-time systems." Thesis, Brunel University, 2015. http://bura.brunel.ac.uk/handle/2438/12105.
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The purpose of this research work is to propose an improved method for real-time sensitivity analysis (SA) applicable to large-scale complex systems. Borrowed from the EventTracker principle of the interrelation of causal events, it deploys the Rank Order Clustering (ROC) method to automatically group every relevant system input to parameters that represent the system state (i.e. output). The fundamental principle of event modelling is that the state of a given system is a function of every acquirable piece of knowledge or data (input) of events that occur within the system and its wider operational environment unless proven otherwise. It therefore strives to build the theoretical and practical foundation for the engineering of input data. The event modelling platform proposed attempts to filter unwanted data, and more importantly, include information that was thought to be irrelevant at the outset of the design process. The underpinning logic of the proposed Event Clustering technique (EventiC) is to build causal relationship between the events that trigger the inputs and outputs of the system. EventiC groups inputs with relevant corresponding outputs and measures the impact of each input variable on the output variables in short spans of time (relative real-time). It is believed that this grouping of relevant input-output event data by order of its importance in real-time is the key contribution to knowledge in this subject area. Our motivation is that components of current complex and organised systems are capable of generating and sharing information within their network of interrelated devices and systems. In addition to being an intelligent recorder of events, EventiC could also be a platform for preliminary data and knowledge construction. This improvement in the quality, and at times the quantity of input data, may lead to improved higher level mathematical formalism. It is hoped that better models will translate into superior controls and decision making. It is therefore believed that the projected outcome of this research work can be used to predict, stabilize (control), and optimize (operational research) the work of complex systems in the shortest possible time. For proof of concept, EventiC was designed using the MATLAB package and implemented using real-time data from the monitoring and control system of a typical cement manufacturing plant. The purpose for this deployment was to test and validate the concept, and to demonstrate whether the clusters of input data and their levels of importance against system performance indicators could be approved by industry experts. EventiC was used as an input variable selection tool for improving the existing fuzzy controller of the plant. Finally, EventiC was compared with its predecessor EventTracker using the same case study. The results revealed improvements in both computational efficiency and the quality of input variable selection.