To see the other types of publications on this topic, follow the link: Automatic control equipment industry.
Dissertations / Theses on the topic 'Automatic control equipment industry'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 50 dissertations / theses for your research on the topic 'Automatic control equipment industry.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.
1
Andzik, Rob, and Charles (Chuck) N. Brans. "AUTOMATIC RANGE EQUIPMENT SETUP AND CONTROL." International Foundation for Telemetering, 2006. http://hdl.handle.net/10150/604137.
Full textAbstract:
ITC/USA 2006 Conference Proceedings / The Forty-Second Annual International Telemetering Conference and Technical Exhibition / October 23-26, 2006 / Town and Country Resort & Convention Center, San Diego, California<br>Today Ranges are faced with the typical dilemma of doing more with less—less money, less
time, and less experienced range personnel. Meanwhile, Ranges are being forced to make their
operations more efficient in use of time, money, and functionality. As a result, Ranges are
looking for automated ways to remotely configure and operate their tracking stations and to
provide interoperability between ranges, sites, and equipment.
RT Logic worked with numerous range operators and equipment vendors to create an open
software architecture that provides rapid device configuration, equipment status at a glance, and
automatic fault detection and isolation. RT Logic’s architecture utilizes the CORBA
specification to achieve extensibility and scalability for future range requirements. Adoption of
this architecture and approach will reduce costs, time, and mistakes.
2
Almqvist, Håkan. "Automatic bucket fill." Thesis, Linköping University, Department of Electrical Engineering, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-51490.
Full textAbstract:
<p>This report contains the first step towards a complete, fully autonomous, robust bucket fill regulator for a wheel loader working with gravel materials.</p><p>The bucket fill procedure is the most critical part of the work cycle of a wheel loader. It is a task that has a long learning curve and also is weary, even for experienced drivers. The automation of it could therefore have a big impact on the cost effectiveness for wheel loaders and for the comfort of the drivers.</p><p>In this report, a suggestion for the complete solution of an automatic bucket fill regulator is presented. A regulator prototype is also constructed with a Volvo L120F as the base. The scope for the prototype is limited to one type of gravel material and quite optimal conditions for the wheel loader, but the complete solution is kept in mind throughout the synthesis. The constructed regulator is prepared for expansion, but the implementation and field testing is limited to the scope.</p>
3
Garcia, Sotelo Gerardo Javier. "Get the right price every day." CSUSB ScholarWorks, 2005. https://scholarworks.lib.csusb.edu/etd-project/2729.
Full textAbstract:
The purpose of this project is to manage restaurants using a software system called GRIPED (Get the Right Price Every day). The system is designed to cover quality control, food cost control and portion control for better management of a restaurant.
4
Chiu, Michael Alec 1968. "Roadmap of mechanical systems design for the semiconductor automatic test equipment industry." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/10073.
Full text
5
Andersson, Tobias. "Increased Autonomy for Construction Equipment using Laser." Thesis, Linköping University, Automatic Control, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-59910.
Full textAbstract:
<p>At working sites all around monotonic tasks are performed. If one were able</p><p>to automatize these kinds of tasks there would be a large economical profit to</p><p>collect. Volvo CE are in the process of developing an autonomous wheel loader,</p><p>to perform these types of monotonic, uniform tasks. The project is intended to</p><p>be performed mainly be thesis workers. This report is the eighth thesis in this</p><p>project. Earlier work has made the loader able to see a pile using a laser scanner.</p><p>The machine can also see and fill a hauler. The usage of the laser scanner can</p><p>only be made while the loader is standing still. The aim of this thesis work has</p><p>been to make the loader able to scan its environment while it is moving. To do</p><p>this an inertial measurement unit has been used for keeping track of the scanners</p><p>orientation during a scan. The work of this thesis has resulted in a working set-up</p><p>on the machine, and a robust framework for future work.</p><p> </p>
6
Zielinskie, David Alphonse 1959. "Automatic control and data analysis of a multichannel millimeter wave radiometer." Thesis, The University of Arizona, 1988. http://hdl.handle.net/10150/276787.
Full textAbstract:
This thesis describes a multi-channel millimeter wave radiometer control system that will be used for atmospheric water vapor and temperature profile retrievals. The system consists of four subsystems which provide a total of nine frequency channels, a steerable reflector to permit slant-path measurements at different zenith angles, and a host computer for analyzing the data. The nine channels span the water vapor and oxygen absorption lines in the 20 to 60 GHz range. A distributed processing architecture is implemented to control the system. Each of the subsystems employs a signal processor and a microcontroller, which are configurable from the host. The signal processor filters the receiver's output, while the microcontroller oversees the radiometer, accepts data from the signal processor and communicates with the host. The host executes a custom shell that allows it to concurrently accept data from the subsystems, position the reflector and execute user analysis programs.
7
Birk, Wolfgang. "Industry applications of multivariable control." Doctoral thesis, Luleå, 2002. http://epubl.luth.se/1402-1544/2002/28/index.html.
Full text
8
Kress, Reid Leonard. "Adaptive model-following control for hyperthermia treatment systems." Diss., The University of Arizona, 1988. http://hdl.handle.net/10150/184430.
Full textAbstract:
The purpose of this research was to develop three real-time adaptive temperature controllers for hyperthermia heating systems. Each scheme is made adaptive by using a transient Gaussian estimation routine to estimate the tissue blood perfusion and by then using these estimated values either in an optimizing routine, or in an observer, or in both. The optimizing routine uses a steady-state Gaussian estimation technique to optimize the power distribution until the best possible match is obtained between the steady-state temperatures predicted by a treatment model and a prespecified ideal temperature distribution. The observer uses a treatment model to control unmeasured locations. The first adaptive control scheme uses the optimizing routine alone, the second uses the observer alone and the third uses both the optimzing routine and observer. The performance of each of the adaptive control schemes is compared to a standard proportional-integral-derivative (PID) control scheme for one-dimensional simulations of typical treatments. Results comparing the deviation of the controlled temperature distribution to the ideal desired temperature distribution for all locations and all times indicate that the adaptive schemes perform better than the PID scheme. It can be concluded that adaptive control yields improved performance if good a priori knowledge of the treated region tissue and perfusion region boundaries is available. While these control schemes were designed for eventual implementation on a scanned focused ultrasound hyperthermia treatment system, the techniques are applicable to any system with the capability to vary specific power with respect to location and with an unknown distributed energy sink proportional to the temperature elevation.
9
Seo, Jongwon. "Graphical interface design for equipment control in unstructured environments /." Digital version accessible at:, 1998. http://wwwlib.umi.com/cr/utexas/main.
Full text
10
Wang, Zheng. "The design and implementation of a computer-controlled pneumatic device to replace the deadweight in standard exercise equipment." Thesis, Cape Peninsula University of Technology, 2007. http://hdl.handle.net/20.500.11838/1384.
Full textAbstract:
Thesis (MTech (Information Technology))--Cape Peninsula University of Technology, 2007<br>The increasingly sedentary lifestyle of the past 30 years has contributed to declining
health. Consequently, exercise is vital for good health maintenance. The global Health
and Fitness Industry repeatedly indicates the need for optimally managed exercise
with accurate information feedback. Compared to other industries, the fitness industry
is lagging behind in incorporating Information Technology into its operations. On the
other hand, the most current exercise equipment impose fixed-trajectory exercise on
users with the dominance of static equipment designs. These exercise equipment are
normally deadweight-based equipment. In deadweight-based exercise equipment, the
weights generally can be changed only when the equipment is inactive. Therefore, a
more novel exercise environment is required for current exercisers in the fitness
industry.
This thesis explores to develop a computer-controlled pneumatic dynamic resistance
exercise equipment with onboard data management. This new technology optimises
exercise effectiveness for users. Exercisers will have advanced diagnostic capacity,
and will capture user data which can be manipulated into meaningful information for
use by Health and Fitness Industry stakeholders.
This thesis will explore all the key concepts about computer-controlled equipment.
The key concepts to be investigated will include FX (force-displacement) control
technology, pneumatic system control, fail-safe mechanics, and Graphical User
Interface design. The primary aim of the project is to replicate and enhance the
functionality, performance, and sensation of deadweight-based equipment. A further
aim of the project is to investigate the feasibility of designing a compact retrofit-able
pneumatic unit to replace the deadweights of existing standard exercise equipment.
The computer control will be implemented on a "National Instruments PXI" computer
featuring Data Acquisition and Control (DAQAC) capacity, and the software will be
implemented using "LabVIEW 7.0', which is a graphic object-oriented computer
language developed to facilitate hardware I software communications.
11
Henriksson, Erik. "Predictive Control for Wireless Networked Systems in Process Industry." Doctoral thesis, KTH, Reglerteknik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-141459.
Full textAbstract:
Wireless networks in industrial process control enable new system architectures and designs. However, wireless control systems can be severely affected by the imperfections of the communication links. This thesis proposes new methods to handle such imperfections by adding additional components in the control loop, or by adapting sampling intervals and control actions. First, the predictive outage compensator is proposed. It is a filter which is implemented at the receiver side of networked control systems. There it generates predicted samples when data are lost, based on past data. The implementation complexity of the predictive outage compensator is analyzed. Simulation and experimental results show that it can considerably improve the closed-loop control performance under communication losses. The thesis continues with presenting an algorithm for controlling multiple processes on a shared communication network, using adaptive sampling intervals. The methodology is based on model predictive control, where the controller jointly decides the optimal control signal to be applied as well as the optimal time to wait before taking the next sample. The approach guarantees conflict-free network transmissions for all controlled processes. Simulation results show that the presented control law reduces the required amount of communication, while maintaining control performance. The third contribution of the thesis is an event-triggered model predictive controller for use over a wireless link. The controller uses open-loop optimal control, re-computed and communicated only when the system behavior deviates enough from a prediction. Simulations underline the methods ability to significantly reduce computation and communication effort, while guaranteeing a desired level of system performance. The thesis is concluded by an experimental validation of wireless control for a physical lab process. A hybrid model predictive controller is used, connected to the physical system through a wireless medium. The results reflect the advantages and challenges in wireless control.<br><p>QC 20140217</p>
12
Andersson, Daniel, and Robin Florbrant. "Design of a Test Equipment : Quality Control on Hydraulic Quick Couplings Used in the Excavation Industry." Thesis, Luleå tekniska universitet, Institutionen för ekonomi, teknik och samhälle, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-80689.
Full textAbstract:
Construction machines use quick couplers to rapidly change the attached tool. The gear lets the machine operator control the hooking and unhooking of the tool from inside of the cabin. This saves time and makes construction work much easier for the workers. The quick coupler is most commonly used on excavators, placed at the outer end of the excavator arm. The tool which the quick coupler connects to needs to have an adapter welded on it for the coupling process to work. Both quick coupler and adapter are equipped with hydraulic quick couplings, the female halves in the quick coupler and the male halves in the adapter. They connect the distribution of hydraulic fluid from the machine to the tool. This master thesis, in industrial design engineering, is focusing on developing a test equipment that can ensure the quality of hydraulic quick couplings. The project is done in collaboration with the company Steelwrist, which requests that the equipment can detect if the couplings are leaking, in both connected and unconnected state, as well as, measuring the internal friction and spring forces that occur during the connection and disconnection. The project was carried out through a design process with four phases, inspired by ‘the double diamond process’. The used process consists of three sessions of diverging and converging in the form of first widely exploring followed by taking focused actions. The focus in the first phase was to discover information about safety, quality, measurements and instruments, along with conducting interviews and observations in order to understand the current state at the company. In the second phase was the specification and workflow of the new test equipment defined. In the following phase the development of the test equipment started. First by generating hundreds of potential solutions to partial functions, which could be divided into five concepts that were parallely developed and evaluated. In the last phase was the best of the five concepts finalized and constructed in CAD, in order to deliver models and drawings on the final design. The main focus in the developing and evaluating process has been to create a as safe product as possible. The positions needed to be performed by the operator were extensively investigated and the ergonomics were highly prioritized. Another important factor was the simplicity of the machine components of the test equipment. The project resulted in a complete solution for a new testing station, consisting of storage for adapters, spare parts and documents, along with the test equipment in the shape of a floor standing machine. The test equipment seals the hydraulic quick coupling half, which is meant to be tested, towards an adapter with a pneumatic cylinder. A servo motor then moves the opposite quick coupling half in order to enable the connection and disconnection. The last mentioned coupling half is attached to a load cell which measures the force. The existing leak detection instrument is connected to the test equipment in order to fill the test object with air in the different states.<br>Byggmaskiner använder snabbfästen för att snabbt byta det fastsittande verktyget. Redskapet låter maskinföraren styra på- och avkopplingen av verktyget från insidan av hytten. Detta sparar tid och gör konstruktionsarbetet mycket enklare för dem som jobbar. Snabbfästet används oftast på grävmaskiner, placerade längst ut på grävmaskinsarmen. Verktyget som snabbfästet ansluter till måste vara utrustad med en fastsvetsad grind för att kopplingsprocessen ska fungera. Både snabbfästet och grinden är utrustade med hydrauliska snabbkopplingar, honhalvorna i snabbfästet och hanhalvorna i grinden. De ansluter hydrauliken från maskinen till verktyget. Detta examensarbete inom teknisk design fokuserar på att utveckla en testutrustning som kan säkerställa kvaliteten på hydrauliska snabbkopplingar. Projektet utförs i samarbete med företaget Steelwrist, som begär att utrustningen ska upptäcka läckage i kopplingarna, både i anslutet och ej anslutet tillstånd, samt att mäta de interna friktion- och fjäderkrafter som uppstår under anslutning och frånkoppling. Projektet bestod av fyra faser, inspirerad av design processen 'the double diamond process'. De fyra faserna omfattar totalt tre sekvenser innehållande en divergerande del och sedan en konvergerande del i form av att först utforska brett, följt av att smalna av med mer fokuserat besluttagande. Fokus i den första fasen var att ta reda på information om säkerhet, kvalitet, mätningar och instrument, tillsammans med intervjuer och observationer för att förstå det aktuella tillståndet på företaget. I den andra fasen definierades specifikationer och arbetsflödet för den nya testutrustningen. I följande fas inleddes utvecklingen av testutrustningen. Först genom att generera hundratals potentiella lösningar på delfunktioner, som sedan kunde delas in i fem koncept som parallellt utvecklades och utvärderades. I den sista fasen färdigställdes det bästa av de fem koncepten och konstruerades i CAD så modeller och ritningar på den slutliga designen kunde levereras. Huvudfokuset i utvecklings- och utvärderingsprocessen har varit att skapa en så säker produkt som möjligt. De positioner som utförs av operatören undersöktes grundligt och ergonomin prioriterades högt. En annan viktig faktor var enkelheten i testutrustningens olika komponenter. Projektet resulterade i en komplett lösning för en ny teststation, bestående av lager för adaptrar, reservdelar och dokument, tillsammans med testutrustningen i form av en markplacerad maskin. Testutrustningen försluter den hydrauliska snabbkopplingshalvan, som är tänkt att testas, mot en adapter med en pneumatisk cylinder. En servomotor flyttar sedan motsatt snabbkopplingshalva för att möjliggöra anslutning och frånkoppling. Den sistnämnda kopplingshalvan är fäst på en lastcell som mäter krafterna som uppstår. Det befintliga läckagedetekteringsinstrumentet är anslutet till testutrustningen för att fylla testobjektet med luft i dem olika tillstånden.
13
Andersson, Ingo, and Joel Garbers. "Developing Primary Controls for Multiple CE-Machines in a Teleoperation's Environment." Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-49372.
Full textAbstract:
Background: An intermediate step towards fully autonomous construction equipment is “assisted tele-remote operation”. These sorts of operations imply that an operator remotely supports machines that has encountered a situation that autonomous systems onboard the construction machines (CM) cannot solve. Considering teleoperators are not required to continuously monitor the CM in an assisted tele-remote environment, multiple construction machines can be teleoperated simultaneously. For simplification, “assisted tele-remote operation” will now be referred to as “teleoperations”. Volvo Construction Equipment is currently exploring the possibility to teleoperate wheel loaders, articulated haulers, and excavators from a single platform. To do this, primary controls adapted for operating these machines are needed. The primary controls should be designed with the needs of a teleoperator in mind while taking functionality into account, which is needed when CM are both operated conventionally and in tele-remote applications. This procedure will be referred to as relevant primary controls. As the primary controls from three different CM-types are destined to be combined into one platform, the teleoperations platform will be referred to as “3-1 CM teleoperations platform”. The purpose of this thesis project was to propose a relevant solution to primary controls for a 3-1 CM teleoperations platform. To fulfil this purpose, the following two research questions (RQ) where formulated: • RQ1: What are the challenges for teleoperating construction equipment? • RQ2: What defines primary controls in a 3-1 CM teleoperations platform and how can the layout be improved? Method: Using interviews, observations, and literature as qualitative data collection methods, several insights where gained. A scenario for the CM was defined to define the situation in which the quantitative data collection method would be performed. Needs of current CM operators combined with teleoperators have been analysed and listed. Quantitative data has been collected and analysed to design the layout of the primary controls using the objective data as a basis. Result: The research questions were answered with the following results: • RQ1: Insights that resulted in several themes describing how teleoperations can be developed by looking at different challenges it can face. • RQ2: Specifications of the functions included in the new ‘primary controls’ based on CM functions from the company and from teleoperating experiences from several industries. An analysis on how often the functions for the new ‘primary controls’ were used, was carried out. The answers to the research questions were used as a basis to fulfil the purpose of this thesis project by proposing a conceptual solution for primary controls to a teleoperation’s platform for operating multiple CM. Conclusions: It was established that a 3-1 CM teleoperations platform can be developed towards certain CE-machine types. Moreover, additional analysis with experienced operators of each machine type are needed to improve and verify the most optimal layout of the primary controls and platform. Further research is still required to validate the answers to RQ1 and RQ2.
14
Abrons, Andrew. "An investigation into the applicability of reliability centred maintenance and expert systems technology for developing preventative maintenance in the steel industry." Thesis, University of the West of England, Bristol, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.240857.
Full text
15
Greenberg, Susan B. "Control of subtalar motion with the use of ski-boot footbeds." Thesis, University of British Columbia, 1990. http://hdl.handle.net/2429/28746.
Full textAbstract:
Research shows that up to 80% of recreational skiers have lower limb alignments which can impede their ability to turn their skis properly (Subotnick,1982). The most difficult of these alignment problems to control within a ski-boot is the varus alignment of the subtalar joint (Macintyre and Matheson, 1988). The use of custom molded footbeds made specifically for use inside of ski boots has been suggested as one method of compensating for a varus aligned foot. This study compared the effectiveness of one brand of custom molded ski boot footbed with that of a noncustom
insole in controlling the motions of the lower limb associated with subtalar varus. Specifically these motions were those of the rearfoot and the navicular tubercle, along with the alignment of the tibial tuberosity with respect to the mid-line of the ski boot. In addition, subjects were given the opportunity to assess their subjective feelings of edge control, pain, and fatigue while skiing with both the custom molded footbeds and non-custom insoles.
The subject group for this study consisted of 13 advanced level adult skiers who demonstrated more than three degrees of subtalar varus when non-weight bearing. Each subject received a pair of custom molded ski boot footbeds at the beginning of the study.
Ski boots that had been cut away at the rear and the medial side were used in the laboratory in order to observe the motions of the navicular tubercle and the rearfoot as the subject transferred their weight in a simulated skiing motion.
The right and left navicular tubercle, tibial tubercle, and the insertion of the Achilles at the calcaneus of each subject were located by palpation and marked. After sufficient practice of the weight transfer motion, two trials of each landmark were photographed using 35mm slide film. The subjects were first photographed while using the non-custom insoles and again using the custom molded footbeds. The slides were digitized and comparisons were made between the two types of insoles for both the start and end locations of the landmarks as well as for the ranges of motion through which the landmarks traveled.
Statistical analyses of the group results indicated that there was significantly less (p=0.000) navicular motion during the shift from the start to the end positions with the use of the custom molded footbeds as compared to the non-custom insoles. The rearfoot angle was significantly less at both the start (p=0.000) and end (p=0.000) positions with the use of the custom footbeds as compared to the noncustom
insoles. There was no statistical difference between the amount of rearfoot motion allowed by either type of insole. The tibial tubercle was positioned significantly (p=0.000) closer to the mid-line of the ski boot when using the custom footbeds than with the use of the non-custom insoles. These results indicate that the custom footbeds domaintain the subtalar joint in a more neutral position than do non-custom insoles.
During the skiing section of the study the subjects rated the custom footbeds as providing better edge control (p=0.000) and resulting in less fatigue (p=0.000) than noncustom
insoles. There was no statistical significance when comparing the ratings given by the group for the level of pain experienced with the use of either type of insole. There was a statistically significant improvement (p=0.000) in race times for the group when using the custom footbeds as compared to the non-custom insoles.
The results of this study indicate that custom molded ski boot footbeds are able to control subtalar motion more effectively than a non-custom insole. It appears that this control of subtalar motion enhances the skiing experience by increasing edge control and reducing the amount of fatigue experienced.<br>Education, Faculty of<br>Curriculum and Pedagogy (EDCP), Department of<br>Graduate
16
Rahman, Baishali. "Estimating the Economic Benefits of Automatic Section Control in the North Dakota Prairie Pothole Region." Thesis, North Dakota State University, 2018. https://hdl.handle.net/10365/28870.
Full textAbstract:
The impact of Automatic Section Control (ASC) as a tool of Precision Agricultural Technology as considered in the more efficient application of inputs to produce the four major crops, corn, soybean, HRSW, and canola in the North Dakota Prairie Pothole Region. Reduction in machinery overlap in the sample 105 fields was calculated by simulating the routing paths of a 60-feet wide planter with 24 sections controlled and a 120-feet wide boom sprayer with individual nozzle control. The dollar and percentage seed and chemical costs that a farm can save by reducing overlapping area were calculated. Impact of field parameters on net savings were estimated by developing and estimating an econometric model. Results show that ASC can save substantial cost in the sample fields while field shape had the highest significant impact on net cost savings.<br>North Dakota State University. Department of Agribusiness and Applied Economics
17
Ashtari, Elmira. "Investigation of Control Modularity for Test and Measuring Equipment in Heavy Vehicle Industry: The Scania Test Case." Thesis, KTH, Industriell produktion, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-200472.
Full textAbstract:
Dagens företagsklimat och dess kontinuerliga förändringar av teknik och kundbehov tvingar alla företag att tänka om och ändra sina strategier. Scania är kända för att producera modulära produkter och vill i dagsläget undersöka modulariseringen för andra områden såsom testa riggar. När det gäller att uppfylla olika kundernas förväntningar, att snabbt anpassa sig till eventuella förändringar i testsfältet, att tillämpa omställbara modulära och återanvändbara styrsystem är de oundvikliga.Det viktigaste syfte för detta projekt är att undersöka hur Scanias befintliga centraliserade styrsystemet testriggar kan omvandlas till ett modulärt system, och ge riktlinjer för att stödja denna omvandling.En metod som kallas Modularisering Assessment Method (MAM) föreslås av författaren för att producera en modulär arkitektur för det befintliga styrsystem testriggar i Scania i Södertälje, Sverige. Det skapade metoden (MAM), som integrerar både hård- och mjukvaraperspektiv för att hitta modulgränser och undersöker den optimala nivån för distributionskontroll i testriggar som kan betraktas som en styrka för att tillämpa denna metod.För att verifiera metoden har en testrigg valts och modulerats med MAM metoden som en fallstudie.<br>The current business environment and continuous changes of technology and customer needs force all companies to re-think about their strategies. Scania is a famous company for producing modular products and the company wants to investigate modularization for other areas such as test rigs these days. Regarding various customer expectations, to adapt quickly to any changes in testing field, applying reconfigurable, modular, and reusable control systems is inevitable.The main goals of this project are to investigate how the existing centralized control system of test beds at Scania can be potentially converted to a modular distributed one, and provide guidelines to support this transformation.A methodology that is called Modularization Assessment Method (MAM) is proposed by the author to produce a modular architecture for the existing control system of test beds inside Scania in Södertälje, Sweden. This created method (MAM) integrates both hardware and software perspectives to find modules boundaries, and investigates the optimal level of control distribution in the test-beds which can be considered as strength points of applying this method.To verify the method, one of the test beds is chosen and be modularized by MAM method as a case study.
18
Lamp, Shane B. "Equipment specification, process control, and plant simulation for a lignin-fueled fluidized bed combustor plant." Morgantown, W. Va. : [West Virginia University Libraries], 1998. http://etd.wvu.edu/templates/showETD.cfm?recnum=224.
Full textAbstract:
Thesis (M.S.)--West Virginia University, 1998.<br>Title from document title page. Document formatted into pages; contains xv, 98 p. : ill. (some col.). Vita. Includes abstract. Includes bibliographical references (p. 84).
19
Persson, Måns, and Tom Waern. "Automatic adjustments of NC programs in machining centers." Thesis, Uppsala universitet, Fasta tillståndets elektronik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-354416.
Full textAbstract:
The goal of this master thesis was to automate the compensation of NC-programs. Automatic compensations can reduce errors and make the production more efficient. This is vital for increased precision and meeting the quality demands from the market.The project started with a study of how the feedback-loop between production and measurements was done at the time and also researching how the data could be sent between the different machines. This was done by researching solutions of similar problems and interviewing the machine operators. Simulations of how automation could be done with more in-depth measurements of the production machine were also made.The limitations was also evaluated. Research was done on errors and practical flaws which could be problematic for automation.The automation was implemented using Java to send the data between the measuring machine to the production machine. Furthermore a UI was created for the machine operators so that the information flow was under supervision at all times. The UI would suggest a compensation from a pre-programmed algorithm together with the measuring data, and the operator could then decide whether or not to diverge from the suggested compensation.
20
Corbier, Franck. "Modélisation et émulation de la partie opérative pour la recette en plateforme d'équipements automatisés." Nancy 1, 1989. http://www.theses.fr/1989NAN10505.
Full text
21
Wu, Kin-kwong, and 吳健光. "A study of the cost management process and estimation techniques for estimating building services installations in the buildingconstruction industry." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1998. http://hub.hku.hk/bib/B31251523.
Full text
22
Fiala, John C. "Computer representations of machined parts for automatic inspection." Thesis, Virginia Polytechnic Institute and State University, 1985. http://hdl.handle.net/10919/76033.
Full textAbstract:
A comparison is made between octrees, which are regular decompositions of volumes, and new, irregular decompositions called R-trees. This comparison is made within the context of the volume intersection problems that might be associated with an automatic inspection system. The results show that the irregular decomposition is independent of object position and can provide a more space efficient encoding for certain shapes. However, detecting intersections between R-trees requires an algorithm of greater complexity due to the irregularity of the decomposition.
Algorithms are given for obtaining tree decompositions from a hierarchic relational model of a volume. Among these algorithms is a procedure for finding the minimal enclosing rectangular parallelepiped of a boundary representation, and a generalization of the point-in-polygon algorithm to boundaries on curved surfaces. Both of these algorithms have computation times that are proportional to the total number of components of the boundary's representation.<br>Master of Science
23
Joni, Jeffry Hartono. "Quasi-static force analysis of an automated live-bird transfer system." Thesis, Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/16781.
Full text
24
Blais, Bruno. "Model-based visual inspection of hybrid circuits." Thesis, McGill University, 1987. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=63928.
Full text
25
Lin, Yang. "Design and develop a documentation system which is in compliance with ISO 9000 and QS 9000 element 4.11-control of inspection, measuring, and test equipment." Online version, 1998. http://www.uwstout.edu/lib/thesis/1998/1998liny.pdf.
Full text
26
Puntel, Luis. "Sampling Plan for Incoming Material Inspection at Sanden." Thesis, University of North Texas, 1995. https://digital.library.unt.edu/ark:/67531/metadc278774/.
Full textAbstract:
Sanden international, an automobile air conditioning compressor manufacturer, was facing a problem in its incoming material inspection procedures. Although the company had designed and was using its own sampling plan, some managers and supervisors where not confident of its reliability. Sanden recently established a goal for its total number of defects per supplier as one part per million. Achievement of this target required reviews of the existing sampling plan. The purpose of this project was to help Sandra identify the best alternatives for its incoming material inspection procedures. To do that considerations were made about the usefulness of sampling inspections, theoretical aspects of inspection sampling plans were examined, current sampling plans were analyzed and recommendations were made.
27
Törnquist, Martin. "Investigation of rotational velocity sensors." Thesis, Linköping University, Department of Electrical Engineering, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-15904.
Full textAbstract:
<p><p>To improve the speed measurement of construction equipment, different sensor technologies have been investigated. Many of these sensor technologies are very interesting but to keep the extent of the thesis only two was chosen for testing, magnetic absolute angle sensors using Hall and GMR technology, to investigate if those are a valid replacement for the current measurement system that is using a passive sensor. Tests show that these sensors are capable of speed measurement, but because of noisy angle estimates they need filtering for good speed computation. This filtering introduces a large time delay that is of significance for the quality of the estimate. A Kalman filter has been implemented in an attempt to lower the time delays but since only a very simple model has been used it does not give any improvements over ordinary low pass filtering. For these sensors the mounting tolerance is of great interest. For best performance the offset between the sensor and magnet centres need to be kept small for both sensors. This is due to a non-linearity effect this causes. The distance between the sensors and the magnet is not critical for linearity issues, but only for the quality of the signal, where it might drop out when the distance is too large. This is where the sensor using GMR technology stands out. Compared to the Hall technology sensor, the GMR sensor can handle distances that are more than 10 times larger. The conclusion is that these sensors can be a valid replacement of the current measurement system. They will introduce more functionality with the capability of detecting rotational direction and zero velocity. In an application with more than one sensor they can also be used for more purposes, like detecting slip in clutches etc. Depending on the application, the time delays may not be critical, else more work need to be done to improve the estimate, e.g. with a more advanced model for the Kalman filter.</p></p><p> </p>
28
Monostori, Krisztian 1975. "Efficient computational approach to identifying overlapping documents in large digital collections." Monash University, School of Computer Science and Software Engineering, 2002. http://arrow.monash.edu.au/hdl/1959.1/8756.
Full text
29
Wang, Daxue. "Dynamic analysis of constrained object motion for mechanical transfer of live products." Thesis, Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/28099.
Full text
30
Pacheco, Luciana de Almeida. "GCAD - Um modelo conceitual para gerenciamento e controle autônomo e distribuído para sistemas industriais automatizados." Programa de Pós- Graduação em Mecatrônica da UFBA, 2011. http://www.repositorio.ufba.br/ri/handle/ri/10872.
Full textAbstract:
166f.<br>Submitted by Suelen Reis (suziy.ellen@gmail.com) on 2013-04-10T19:35:07Z
No. of bitstreams: 1
Luciana Pacheco seg.pdf: 3529890 bytes, checksum: 13857ac04543f1bbc9fd4d7ed9849eba (MD5)<br>Approved for entry into archive by Rodrigo Meirelles(rodrigomei@ufba.br) on 2013-05-11T15:30:28Z (GMT) No. of bitstreams: 1
Luciana Pacheco seg.pdf: 3529890 bytes, checksum: 13857ac04543f1bbc9fd4d7ed9849eba (MD5)<br>Made available in DSpace on 2013-05-11T15:30:28Z (GMT). No. of bitstreams: 1
Luciana Pacheco seg.pdf: 3529890 bytes, checksum: 13857ac04543f1bbc9fd4d7ed9849eba (MD5)
Previous issue date: 2011<br>Em sistemas industriais automatizados, a inatividade provocada pela escassez não planejada de recursos, ou por falhas de processo, tem grande influência no desempenho dos sistemas por conta das descontinuidades e instabilidades geradas. Sistemas de controle distribuídos e autônomos podem ajudar a lidar com esses tipos de problemas devido à melhoria de desempenho possibilitada. Entretanto, aspectos relativos à segurança e ao tempo de resposta devem ser bem tratados nesses sistemas devido aos riscos envolvidos (humanos, financeiros e ambientais). A proposta de sistemas autônomos e distribuídos visa a que decisões de controle sejam tomadas mais próximas do objeto controlado, reduzindo assim o tempo de atuação no processo e sistematizando algumas decisões, antes tomadas de forma empírica. Consequentemente, se espera aumentar a disponibilidade e a continuidade do processo, bem como garantir os aspectos de confiabilidade. Entretanto, quando tais sistemas se tornam mais autônomos e distribuídos, podem tender ao comportamento global caótico, caso suas interações não estejam bem definidas. Assim, é importante que seja avaliado e dimensionado o acoplamento entre os sistemas autônomos relacionados. O grau de inteligência de um sistema pode variar de uma entidade completamente controlada a entidades completamente autônomas. O primeiro nível de inteligência é verificado quando um sistema é capaz de gerenciar suas próprias informações, obtidas por meio de sensores e demais técnicas e dispositivos, e não somente manipular informações. Em um segundo nível, o sistema pode notificar o seu gestor quando há um problema. Em um terceiro nível, o sistema já é capaz de tomar decisões e se autogerenciar, mesmo sem intervenção externa. Neste caso, o sistema tem controle total sobre suas tarefas e não há nenhum controle externo a ele. A alternativa proposta pelo GCAD visa a que Sistemas Industriais Automatizados atinjam até o terceiro nível de inteligência, sendo que intervenções externas podem ser admitidas nos casos em que uma ação puramente local e autônoma de fato não é recomendável ou não é possível, por exemplo, havendo necessidade de substituição de equipamentos ou dispositivos. O GCAD propõe um módulo de controle inteligente instanciado predominantemente em nível local que visa a permitir que cada Sistema Industrial Automatizado, distribuído em células, tome decisões críticas de uma forma autônoma. Adicionalmente, um módulo remoto deve gerenciar situações mais complexas que estão além da capacidade de decisão ou atuação do sistema de controle local. O modelo proposto visa a permitir ajustes automáticos e autônomos no sistema, a fim de melhorar seu desempenho, e prevenir ou tratar as falhas inesperadas,assegurando a continuidade da operação.<br>Salvador
31
Tröger, Ralph. "Supply Chain Event Management – Bedarf, Systemarchitektur und Nutzen aus Perspektive fokaler Unternehmen der Modeindustrie." Doctoral thesis, Universitätsbibliothek Leipzig, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-155014.
Full textAbstract:
Supply Chain Event Management (SCEM) bezeichnet eine Teildisziplin des Supply Chain Management und ist für Unternehmen ein Ansatzpunkt, durch frühzeitige Reaktion auf kritische Ausnahmeereignisse in der Wertschöpfungskette Logistikleistung und -kosten zu optimieren.
Durch Rahmenbedingungen wie bspw. globale Logistikstrukturen, eine hohe Artikelvielfalt und volatile Geschäftsbeziehungen zählt die Modeindustrie zu den Branchen, die für kritische Störereignisse besonders anfällig ist. In diesem Sinne untersucht die vorliegende Dissertation nach einer Beleuchtung der wesentlichen Grundlagen zunächst, inwiefern es in der Modeindustrie tatsächlich einen Bedarf an SCEM-Systemen gibt.
Anknüpfend daran zeigt sie nach einer Darstellung bisheriger SCEM-Architekturkonzepte Gestaltungsmöglichkeiten für eine Systemarchitektur auf, die auf den Designprinzipien der Serviceorientierung beruht. In diesem Rahmen erfolgt u. a. auch die Identifikation SCEM-relevanter Business Services. Die Vorzüge einer serviceorientierten Gestaltung werden detailliert anhand der EPCIS (EPC Information Services)-Spezifikation illustriert.
Abgerundet wird die Arbeit durch eine Betrachtung der Nutzenpotenziale von SCEM-Systemen. Nach einer Darstellung von Ansätzen, welche zur Nutzenbestimmung infrage kommen, wird der Nutzen anhand eines Praxisbeispiels aufgezeigt und fließt zusammen mit den Ergebnissen einer Literaturrecherche in eine Konsolidierung von SCEM-Nutzeffekten. Hierbei wird auch beleuchtet, welche zusätzlichen Vorteile sich für Unternehmen durch eine serviceorientierte Architekturgestaltung bieten.
In der Schlussbetrachtung werden die wesentlichen Erkenntnisse der Arbeit zusammengefasst und in einem Ausblick sowohl beleuchtet, welche Relevanz die Ergebnisse der Arbeit für die Bewältigung künftiger Herausforderungen innehaben als auch welche Anknüpfungspunkte sich für anschließende Forschungsarbeiten ergeben.
32
Kim, Changwan 1972. "Spatial information acquisition and its use for infrastructure operation and maintenance." 2004. http://hdl.handle.net/2152/12780.
Full text
33
Peng, Hsiao Hsuan, and 彭曉萱. "Dual Channels, Transaction Costs, Agency Costs and Organization Control- The Case of Automation Equipment Element Manufactory Industry in Mainland China." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/k76dz3.
Full textAbstract:
碩士<br>東海大學<br>國際經營與貿易學系<br>103<br>The purpose of this study is to discuss the relationships of organizations that using the dual channels through the automation equipment element manufactory industry in Mainland China. This study uses the case study method, including literature research, case investigation and data collecting, then build the conceptual framework by the data of the company in case study, which contain the transaction cost theory, the agency cost theory and the organization control mechanism.
Firstly, the study finds out that the opportunism, information asymmetry and inconsistent of the aims are the main reasons causing the transaction costs and the agency costs between the company, subsidiary company and the agent through the literature of transaction cost theory and agency cost theory.
Secondly, the subsidiary company will cut down the transaction and agency cost, through the organization control mechanism, including formal contract, inter-organizational coordination and organizational learning, therefore the organization control mechanism has a positive impact on the performance of operating a company, it can make the market gradually grow, and it also can respond the penetration of the local market and the market in agency area quickly.
34
Chen, Chin Hsin, and 陳志鑫. "Dual Channel Strategy and Organizational Control Mechanisms in Foreign Market- The Case of Automation Equipment Element Manufactory Industry in Mainland China." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/c65dm3.
Full textAbstract:
碩士<br>東海大學<br>高階經營管理碩士在職專班<br>103<br>This study investigates the affect of competition between using dual channel strategy and management model when the enterprises enter the Mainland China. This study adopts case study method, to investigate how the manufacturer of automation equipment element establishes intensive distributors through dual channel strategic thinking and management system in Mainland China. Through in-depth interview‘s content analysis, this study constructs the theoretical framework and management strategy of regional distributors. First of all, when the company wants to enter the Mainland China market quickly, but its competitive position is in insufficient resources, the company would adopt a market penetration of dual channel strategy to resist strong brand competitors. Secondly, the dual channel strategy has two aspects, one is setting up a direct subsidiary company in each sale region, and the other is setting up many regional distributors in the sale region to grasp core competition resource of market information and customer relationship through in-depth local market to response market changes rapidly. In order to monitor regional distributor's opportunistic behavior, the corporation designs internal control mechanisms to enhance business performance. Furthermore, setting up a dual channel strategy can monitor distributor's opportunistic behavior and execute company’s strategy.
35
楊汶唐. "Company Value Evaluation in Semiconductor Industry By Automatic Testing Equipment." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/yku7a7.
Full textAbstract:
碩士<br>國立清華大學<br>高階經營管理碩士在職專班<br>101<br>In whole semiconductor industry, the firms through excellence supply chain to gain the maximum profit. But, the competition will become more and more challenge due to technology and production revolution in coming years.
Device testing is one of step of whole supply chain. This step happens on the wafer level and assembly package level. With device technology revolution, the testing requirement becomes more complex, from pure digital to mixed-signal, then to radio frequency. But, most of firms would like to reduce cost from testing step, and then would like to invest with DFT and BIST research. This kind of strategy, the cost become to major topics address by firms, in order to reduce the cost. From inside of testing industry, the mergers and acquisitions happened in the past several years.
How to evaluate the values of companies will be our objective we would like to discuss, and some investigation and discussion also will be address in this paper, base on finance and strategy.
36
Chiu, Sheng-Min, and 邱聖民. "Design of an Automatic Test Equipment for Redundancy Power Control and Distributed Unit." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/63926s.
Full textAbstract:
碩士<br>國立臺灣科技大學<br>電機工程系<br>102<br>When the development of power management and smart grid become more and more important, power supply is not only composed of hardware and simple control systems. Power supply can form networks through communications and information exchange, and it can be remotely controlled by operators. Example of “smart” power supplies include the space technology ( like the power management of a satellite) and the remote control systems for safety issues (like the multiple and redundant power control system in a nuclear power plant). Therefore, how to remotely control and verify complex multiple-function power management systems will be critical.
The purpose for this thesis is to design a set of test systems. Through the software and hardware with remote communication, the correctness of power control and hardware system can be examined or identified. Furthermore, the test equipment are manufactured through the following steps: demand understanding, concept designing, and implementation ( including software and hardware design). Using a set of this test system can obtain telemetry monitoring pictures immediately. With these pictures and hardware actions, the user can examine the operating situations. This function can help testing staff immediately and correctly identify the software and hardware status and drawbacks. Moreover, in order to examine the redundancy design, the test system can be operated by software but also can be controlled manually to verify the functionalities of the redundant power.
37
Lin, Jiun-Sheng, and 林峻生. "The Developmental Strategy of Automatic Optical Inspection Equipment Company in Flat Panel Display Industry." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/00492696193628502221.
Full textAbstract:
碩士<br>國立交通大學<br>管理學院高階主管管理碩士學程<br>94<br>With the continuous progress of science and technology, the business opportunities of Automatic Optical Inspection equipment are highly increased. The scope of application contains universe search, aviation, satellite telemetering, bio-medicine, industrial production, etc., which cover many different fields of image identification, such as industry, military, livelihood, etc. Automatic Optical Inspection equipment is the essential foundation of the development in hi-tech. Those Taiwanese major industries such as semiconductor, Flat-Panel-Display, opto-electronics , electronics, bio-tech, etc. all need high-speed and high accuracy integrated Automatic Optical Inspection systems for detecting abnormality and provide fast recording.
The procedure is to study the present stage of challenges Automatic Optical Inspection equipment companies are facing in shorter product and industry life cycle; the increasing investment cost in new product development; the lower profit caused by low cost product trend, and the increasing quantity of competitors. The first part of this research is to study the relevant literatures of the field as the theoretical basis of the thesis. Secondly, collect and analyze the information about opportunities in Automatic Optical Inspection market. Moreover, using Flat-Panel-Display market which has the highest capital equipment investment in high tech industry to do the market analysis and strategy study. Through the benchmarking company’s case study, this research will focus on the growth opportunity and the selection of competitive strategy once the new business development cost is very high while internal resource is limited. Recommendations and suggestions will be addressed in the strategy which is to match the company initiatives.
The result of research shows the application of AOI industry is extremely wide. While building Blue Ocean strategy, cooperate should be based on existing niche market first and proceed the vertical integration or horizontal development to look for the new market opportunities; Face the globalized competition and demand of localized service, cooperate needs to stand from customers’ point of view and think about reducing customers’ use cost and improving the service quality. Also, can use the tool of Strategy Canvas Analysis and Four Action Framework Analysis to create the new value curve. The benchmarking company followed the above strategy and has already succeeded in defeating the existing Japanese vendor to win the adoption of the biggest TFT/LCD manufacturer in Taiwan.
This research is based on Flat-Panel-Display to do the analysis. I believe the result of research can be regarded as the reference basis while AOI companies develop other industries.
38
CHEN, YEN-PING, and 陳彥萍. "A Continuous Auditing Mechanism for Equipment Quality Control - A Case Study of Semiconductor Industry." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/rt5nsb.
Full textAbstract:
碩士<br>國立中正大學<br>會計與資訊碩士在職專班<br>107<br>In the semiconductor industry, yield is essential for controlling and promoting the equipment’s stability. Poor quality in the final cut crystalline grain may influence the final product if the stability during wafer production is inadequate. In this study, to build a monitoring mechanism to detect abnormal machine quality, we use analysis of variance, principal component analysis, and cluster grouping. For each batch of operations, we analyze the reasons for the differences and quickly identify the possible issues by analyzing data rather than relying on human judgment. This approach leads to a shorter analysis time and increased control over key projects, while ensuring adjustment of on-site personnel, increase in the stability of machines, and ensuring better production quality such that the yield can be increased. Currently, the requirements for equipment quality are mostly set in a limited conditional range; however, based on this study, we will be able to initiate equipment-related improvements and control the equipment quality in a more precise range.
39
Chen, Yi-Zen, and 陳怡仁. "The design of the timing generator with digital control quantized delay locked loop in automatic test equipment." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/45052765174513324428.
Full textAbstract:
碩士<br>國立臺灣大學<br>電子工程學研究所<br>92<br>Abstract
In this thesis, several architectures of timing generator and delay locked loop are introduced. In timing generator design, it is hard to fulfill high resolution, wide programmable delay range and intrinsic delay at the same time. We proposed a mixed architecture of timing generator. In delay locked loop design, the advantage of the digital architecture over traditional analog one are that system stability is independent on process variation and wide tunable delay range is possible.
And a new digital delay locked loop with lock-detecting algorithm is presented to realize a fine timing generator by TSMC 0.35um CMOS process.
In coarse timing generator implemented with TSMC 0.25um CMOS standard cell process, its architecture is realized by counter array. We using carry prediction mechanism to increase its operation frequency. The operation frequency has nothing to do with the bit count of the counter.
40
Nieh, Hsien-Chi, and 聶先琪. "A Study of the Competition Indicators Form of Automatic Optical Inspection Equipment Companies in Taiwan TFT-LCD Industry." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/33142416182890938202.
Full textAbstract:
碩士<br>國立交通大學<br>管理學院管理科學學程<br>102<br>The objective of this research is mainly focused on automatic optical inspection（AOI）equipment companies in Taiwan Thin Film Transistor-Liquid Crystal Display（TFT-LCD）industry. It captured both industry and academic expert opinion through literature review and expert survey. Analytic hierarchy process approach（AHP）was applied to develop an objective evaluation method and a specific rating scale with competition performance appraisal indicators and weights. The evaluation tool can be used not only to select outsourcing partners by AOI equipment companies but also to develop core competencies and improve performance of priority items by AOI providers. The finding of this research eventually yielded five competition appraisal dimensions and twenty-three secondary indicators which can be summarized as follows：
I.Customer Service Appraisal Dimension（Overall weights of five indicators：27.1%）
II.Personnel Dimension（Overall weights of two indicators：22.5%）
III.Equipment Functional Efficacy Dimension（Overall weights of three indicators：20.1%）
IV.Managerial Efficacy Dimension（Overall weights of six indicators：17.1%）
V.Enterprise Capability Dimension（Overall weights of seven indicators：13.2%）
41
Pillay, Nelendran. "A particle swarm optimization approach for tuning of SISO PID control loops." Thesis, 2008. http://hdl.handle.net/10321/488.
Full textAbstract:
Thesis submitted in compliance with the requirements for the Master's Degree in Technology: Electrical Engineering - Light Current, Durban University of Technology, Department of Electronic Engineering, 2008.<br>Linear control systems can be easily tuned using classical tuning techniques such as the
Ziegler-Nichols and Cohen-Coon tuning formulae. Empirical studies have found that
these conventional tuning methods result in an unsatisfactory control performance when
they are used for processes experiencing the negative destabilizing effects of strong
nonlinearities. It is for this reason that control practitioners often prefer to tune most
nonlinear systems using trial and error tuning, or intuitive tuning. A need therefore exists
for the development of a suitable tuning technique that is applicable for a wide range of
control loops that do not respond satisfactorily to conventional tuning.
Emerging technologies such as Swarm Intelligence (SI) have been utilized to solve many
non-linear engineering problems. Particle Swarm Optimization (PSO), developed by
Eberhart and Kennedy (1995), is a sub-field of SI and was inspired by swarming patterns
occurring in nature such as flocking birds. It was observed that each individual exchanges
previous experience, hence knowledge of the “best position” attained by an individual
becomes globally known. In the study, the problem of identifying the PID controller
parameters is considered as an optimization problem. An attempt has been made to
determine the PID parameters employing the PSO technique. A wide range of typical
process models commonly encountered in industry is used to assess the efficacy of the
PSO methodology. Comparisons are made between the PSO technique and other
conventional methods using simulations and real-time control.
42
Huang, Jyun-Yi, and 黃鈞翊. "Study and Design of CAN Based Control Module for Automatic and Automotive Industry." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/34129792007230496479.
Full textAbstract:
碩士<br>南臺科技大學<br>電子工程系<br>105<br>The Taiwan government began to promote industry 4.0 in 2016. This concept aims at the change of the production line which can meet the specific demand from the end customer. In this thesis, we will show the process of the realization of industry 4.0 using the CAN bus standard which is original applied in the automotive industry. Because of its reliability and low cost of communication, this protocol can be used to facilitate the integration of intelligent production using different equipments. CAN Bus is widely used in industrial control 4.0, e.g., CANopen, an industrial control protocol based on the CAN Bus.
In this paper, the mechanism of CAN bus networking protocol will be introduced, which includes the evolution history, the signal characteristics of the Physical Layer and message framework of the Data Link Layer. The error detection and protection shemes will also be discussed.
Starting from the understanding of CAN bus standard, we will show the capability of software CANoe, developed by Vector company, for the design of CAN bus module. Physically, the CS8959 chip developed by Myson is employed on the implementation of a CAN node. The CANopen CiA401standard is realized based on the CAN bus physical layer protocol. The main function of this CANopen node is a four-channel analog signal input for the sensing module.
Experimental results show that temperature sensor (LM35), humidity sensor (HR202L) and photometric sensor (TEMT6000) are successfully implemented and integrated to a SCADA system in an automatic control environment.
43
Baily, Albert L. "Multi-media presentation system based on a distributed control network." Thesis, 1991. http://hdl.handle.net/1957/37184.
Full textAbstract:
Control oriented local area networks (COLANs) are being installed in
factories at an increasing rate. Traditionally, process control has
operated with a master scheduler (computer) monitoring a number of points
in a control grid. As the complexity of today's process control needs
grow, the need to process information locally increases. Microcontrollers,
networked with a master scheduler, can collect data from a locus of points
and make decisions as to whether the master needs to be notified or not.
By processing data locally, memory and execution time are freed up for the
master scheduler. Task implementation becomes modular in nature,
resulting in process control software that is easier to write, and
maintain.
This structure is the basis for COLAN V, a low cost, real-time,
distributed control network developed at Oregon State University. COLAN
V was used as the foundation for the creation of a multi-media
presentation system. Six microcontrollers were networked together to
remotely control the operation of projectors, projector screens, and
lighting. Based on the application the master scheduler was replaced by
a tape player. This allowed the storage of the audio part of the
presentation on one track of the tape and the storage of the synchronized
control signals on the other track. This distributed control network
supplied a low cost solution to a need that was not addressed by the
commercial market at any price.<br>Graduation date: 1992
44
Liu, Ching-yan, and 劉經彥. "A study on semiconductor automatic test equipment competition strategy of testing industry – A case study of V-Company RF test system." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/18705792375850880292.
Full textAbstract:
碩士<br>國立交通大學<br>管理學院高階主管管理碩士學程<br>96<br>During the past 30 years, the Semicon industry is the hottest topic over the world undoubtedly. In the industry, it provides a huge business opportunity and comes out many new business model and new sub-industry. Testing plays a role as a gate keeper after coming after the foundry business came true.
However, with the development trend of Semicon industry tends towards electric consumer product. “Cost down” oriented leads to the value of whole supply chain shrunk. They have to figure out a more effective mass production solution. Testing is the final stage of Semicon supply chain, the add-on value could be lower, but it is a necessary evil and cannot be skipped. So, all the testing houses try to find out a low cost and long life cycle test platform to fulfill the market change. Therefore, the tester vendors’ product competitions become more and more serious in price.
The objective of this thesis is with SWOT to figure out V-company’s position among the market and their new RF option to their owned RF segment, and also coming out the doable competition strategies by information collect, interview with questionnaire.
Moreover, the thesis comes out some recommendations to V company for the future development. And hoped this study can be also a reference for other companies to the new product entering into a new specific market segment.
45
Azran, Simon. "Inventory policy planning for spare parts and its application in the heavy-duty truck and bus industry." Thesis, 1994. http://hdl.handle.net/10539/21323.
Full textAbstract:
A dissertation submitted to the Faculty of Engineering, University of the Witwatersrand, Johannesburg, in fulfilment of requirements for the degree of Master of Science in Engineering. Johannesburg, November 1994.<br>Inventories are produced, used (e.g. for raw materials, supplies, spare parts, and So forth) or
distributed by every organisation. Moreover, inventories represent a major investment from the
perspectives of both individual firms and entire national economies. In addition, enormous costs
are incurred in the planning, scheduling, control and actual carrying out of
replenlshment-Iprocuretnentl related activities.
Interest in the subject of inventory management is constantly increasing, yet Silver and
Petarsonlll (P(eface) found that "although invi ,~ory management ha.l been studied in
considerable depth from a theoretical perspective, yet, those of us who, throuah consulting
work, come into. clos>!)contact with mananerlal decision procedures in this arer are repeatedly
surprised to find how limited, and ad hoc, many of the existing decision systems actually are.
The rate at which theory has been developed has far outstripped the rate at which decision
practices of firms have been successft,Jlly upgraded. A major g~o has existed between the
theoretical solutions, on the one hand, and the real world problems, on the other".
Inventory control is the science-based art of ensuring that lust enough inventory (or stockl is
held by an organisation to meet both its internal and external demand commitments
economically. There can be disadvantages in holding either too much 01 too little inventory.
Therefore, inventory control is primarily concerned with obtaining the correct inventory with
compromise between these two extremes.
The control and maintenance of inventories is a problem common to all enterprises in any sector
of a given economy. The primary aim of this study is to identify What the inventory policy of a
company shoull;I be to Secure a reduction in inventory-related costs while maintaining a high
level of customer service.
Lewis(2) defines two bMlt:~ tvpes of inventory policy. Those in which decisions concerning
replenishment are based on the lellel of inventory held, are known as "fixed-order quantity
models" or "re-order level policies" and those in which such declslons arc made on a time basis
are known as "fixed-time period models" or "re-order cycle policies". According to Nadder(3)
(7I 11) the basic distinction between fixed-order quantity models and fixed-tlme period models
is that the former are "event-triggered" while the latter are "time-triggered". That is, a
fixed-order quantity model initiates an order when the "event" of reaching a specified re-order
level occurs. This event may take place at any time, depending on the demand for the items
considered. In contrast, the fixed-time period model is limited to placing orders at the end of a
predetermined time period; hence, the passage of time alone "triggers" the model.
In this thesis, we shall discuss both classical inventory models and heuristic models. We shall
also conduct an investigation into the factors affecting high levels of inventory ~ mainly lead
times (supplier and internal lea' times) in relation to spare 9arts in the heavv-dutv truck and bus
industry. The thesis also suggests guidelines for controlling stock or these types of commodities
in a practical environment. This will be done by either researching the existing inventory models
or developing new inventory models or a combination of both, the intention being not to look for
absolute optimisation, but rather to achieve significant improvements over current operations.<br>GR 2016
46
Chen, Ching-Chuan, and 陳清泉. "TFT-LCD Industry Prevention Of VOCs Air Pollution Using Control Equipment Of Flameless RRTO Performance Comparison Analysis Research." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/40097117818200251215.
Full textAbstract:
碩士<br>朝陽科技大學<br>環境工程與管理系碩士班<br>101<br>This paper aims at investigating the removal efficiency of volatile organic compounds (VOCs) produced from Thin Film Transistor Liquid Crystal Display (TFT-LCD) by using Flameless Rotary Regenerative Thermal Oxidizer (RRTO). Temperature in the furnace of RRTO was maintained at 860℃~920℃. Rotary speed of RRTO was operated in 2.5 revolution/hr. Inlet gas was 1,380 m3/min and adsorption gas was 91 m3/min. Rotary concentrated ratio was 1/15. Adsorption temperature was set at 200℃. VOCs such as NBA, PGME, PGMEA and IPA were analyzed with GC-FID. Removal efficiency of NBA, PGME, PGMEA, and IPA were found to be 99, 84, 94, and 99% respectively. Results implied that flameless RRTO could improve the removal of VOCs efficiently. The flameless RRTO improved the original RRTO fire operation disadvantage with more energy-saving features and the increase of treatment efficiency.
47
Huang, Chimg-Ling, and 黃青嶺. "TFT-LCD Industry Prevention Of VOCs Air Pollution Using Control Equipment TO And RRTO Performance Comparison Analysis Research." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/65417315501168286056.
Full textAbstract:
碩士<br>朝陽科技大學<br>環境工程與管理系碩士班<br>97<br>Organic solvents have been largely used in the manufacturing process in TFT-LCD photoelectric industry. Therefore, large amounts of volatile organic compounds (VOCs) may be produced in the production process if not properly controlled. These VOCs contain (CH3)2SO, C2H7NO, C8H18O3, (CH3)2S2, (CH3)2S, C8H8, (CH3)2CHOH and (CH3)2CO that may cause unpleasant odor and affect human health. Rotary regenerative thermal oxidizer (RRTO) has been found to be efficient to remove these VOCs in the semiconductor manufacturing industry accounting for 60%. Around 90% of VOCs removal efficiency can be achieved via RRTO air pollution control device (APCD). It is found suitable to be the best available control technology for the VOCs control. RRTO APCD can meet the emission standard of VOCs in photoelectric industry promulgated and regulated by Taiwan EPA in 2006.
In this study, removal efficiency, operational performance and energy saving of RRTO and TO APCDs were investigated. Results showed that RRTO could remove VOCs to an extent of 90% better than TO. In addition, RRTO can reduce the energy consumption compared to TO. Via this study, it is evident that operational performance of RRTO is better than that of TO and therefore it can be used and referred to future APCD installation. RRTO can meet the national VOCs emission standard and it also can meet the policy of energy saving and carbon reduction.
48
Gonçalves, Ana Cláudia Flores. "Calibração e Qualificação: Controlo da Qualidade." Master's thesis, 2019. http://hdl.handle.net/10400.26/32903.
Full textAbstract:
O presente relatório insere-se no âmbito da Calibração e Qualificação de equipamentos no setor da Indústria Farmacêutica no sentido de promover a implementação de procedimentos que diminuam o risco do uso dos mesmos.
Este projeto surgiu através do estágio curricular de Mestrado em Engenharia Biológica e Química na Escola Superior de Tecnologia do Barreiro e decorreu na Indústria Farmacêutica IBERFAR, S.A., durante os meses de março a agosto de 2019.
O risco inerente à utilização de equipamentos em ensaios de controlo da qualidade, especialmente em laboratórios farmacêuticos, é um tema bastante emergente. Assim, este projeto pretende através da aplicação da metodologia Análise do modo de falha e seus efeitos (FMEA - Failure Mode and Effects Analysis), propor ações preventivas de forma a garantir a fiabilidade dos ensaios analíticos e evitar problemas futuros no produto final que possam pôr em risco a saúde dos consumidores.<br>This report address the relevance of the Calibration and Qualification of equipment in the Pharmaceutical Industry sector in order to promote the implementation of procedures that reduce the risk of their use.
This project emerged through the curricular internship of Master in Biological and Chemical Engineering at Escola Superior de Tecnologia do Barreiro and took place in the Pharmaceutical Industry IBERFAR, S.A., from March to end of August 2019.
The risk inherent in the use of equipment in quality control tests, especially in pharmaceutical laboratories, is a very relevant topic nowadays. Thereby, this project aims, through the application of the methodology Failure Mode and Effects Analysis (FMEA), to propose preventive actions in order to ensure the reliability of analytical tests and avoid future problems in the final product that could put at risk the health of consumers.
49
Qhogwana, Xola. "The use of innovative strategies by automotive component manufacturers in Gauteng." Thesis, 2017. http://hdl.handle.net/10321/2560.
Full textAbstract:
Submitted in fulfilment of the requirements for the degree of Master of Technology in Business Administration: Entrepreneurial Studies & Management, Durban University of Technology, Durban, South Africa, 2017.<br>The automotive industry is the third largest sector in the South African economy and it plays such an important role in the economy, that it is often viewed used as a barometer of the health of the economy. Despite the relatively large number of automotive component manufacturers (ACMs) in South Africa, manufacturing a wide range of automotive components, and the incentives offered by the government to increase the local content of vehicles manufactured in the country, the majority of vehicle manufacturers as well as after-market wholesalers and retailers in South Africa source a greater proportion of their automotive components from foreign suppliers. This may be due to a number of reasons, and in this regard, this study investigated the nature and extent to which ACMs in Gauteng, South Africa, used innovative strategies to remain competitive.
A quantitative research design was used, and a self-administered questionnaire was sent to all of the ACMs located in Gauteng. Some of the main findings from the study was that only 48.9% of the respondents had a Research and Development (R&D) department; ACMs ranked their clients, who include motor vehicle manufacturers and original equipment manufacturers, as the most important source of innovation, with existing employees being ranked second, suppliers ranked third, and competitors ranked fourth. The importance of a highly skilled workforce was highlighted by the finding that almost three quarters of the respondents agreed with the statement that new ideas and suggestions from employees had been implemented.
Although the local motor vehicle manufacturers purchase most of the automotive components from ACMs located outside South Africa, the finding that 82% of the ACMs surveyed have been in operation for more than 10 years, with 72% of these organisations in operation for more than 15 years, indicates that most local ACMs are financially profitable and have adapted to global competition.<br>M
50
Kiangala, Kahiomba Sonia. "High tech automated bottling process for small to medium scale enterprises using PLC, scada and basic industry 4.0 concepts." Diss., 2018. http://hdl.handle.net/10500/25772.
Full textAbstract:
The automation of industrial processes has been one of the greatest innovations in the industrial sector. It allows faster and accurate operations of production processes while producing more outputs than old manual production techniques. In the beverage industry, this innovation was also well embraced, especially to improve its bottling processes. However it has been proven that a continuous optimization of automation techniques using advanced and current trend of automation is the only way industrial companies will survive in a very competitive market. This becomes more challenging for small to medium scale enterprises (SMEs) which are not always keen in adopting new technologies by fear of overspending their little revenues. By doing so, SMEs are exposing themselves to limited growth and vulnerable lifecycle in this fast growing automation world. The main contribution of this study was to develop practical and affordable applications that will optimize the bottling process of a SME beverage plant by combining its existing production resources to basic principles of the current trend of automation, Industry 4.0 (I40). This research enabled the small beverage industry to achieve higher production rate, better delivery time and easy access of plant information through production forecast using linear regression, predictive maintenance using speed vibration sensor and decentralization of production monitoring via cloud applications. The existing plant Siemens S7-1200 programmable logic controller (PLC) and ZENON supervisory control and data acquisition (SCADA) system were used to program the optimized process with very few additional resources. This study also opened doors for automation in SMEs, in general, to use I40 in their production processes with available means and limited cost.<br>School of Computing<br>M.Tech (Engineering, Electrical)