Log in

Relevant bibliographies by topics / UNIX (Operating System) Scheduling

Contents

Journal articles
Dissertations / Theses
Books
Book chapters
Conference papers
Reports

Academic literature on the topic 'UNIX (Operating System) Scheduling'

Author: Grafiati

Published: 4 June 2021

Last updated: 7 September 2023

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'UNIX (Operating System) Scheduling.'

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.

Journal articles on the topic "UNIX (Operating System) Scheduling"

1

ZHANG, DU, and RAUL VELEZ. "BMS: A KNOWLEDGE-BASED TOOL FOR UNIX PERFORMANCE TUNING." International Journal on Artificial Intelligence Tools 05, no. 03 (1996): 323–45. http://dx.doi.org/10.1142/s0218213096000225.

Full text

Abstract:

This paper presents the design and implementation of a knowledge-based tool for performance tuning of the UNIX operating system. The tool, called BMS, provides an intelligent support and maintenance for identifying performance bottlenecks in UNIX and recommending solutions to the problems. Currently, it handles problems in UNIX resource management, such as memory utilization, disk utilization, CPU scheduling and I/O devices. BMS has been implemented in the EXSYS environment and tested on UNIX V.3. Preliminary results have indicated that such a knowledge-based tool to operating system performance tuning (1) is viable; (2) increases the productivity of system maintenance personnel and reduces the cost of training; and (3) offers a better service to operating system users by providing prompt recommendations to solutions of their system performance problems.

APA, Harvard, Vancouver, ISO, and other styles

2

Zagan, Ionel, and Vasile Gheorghiţă Găitan. "Soft-core processor integration based on different instruction set architectures and field programmable gate array custom datapath implementation." PeerJ Computer Science 9 (April 18, 2023): e1300. http://dx.doi.org/10.7717/peerj-cs.1300.

Full text

Abstract:

One of the fundamental requirements of a real-time system (RTS) is the need to guarantee re-al-time determinism for critical tasks. Task execution rates, operating system (OS) overhead, and task context switching times are just a few of the parameters that can cause jitter and missed deadlines in RTS with soft schedulers. Control systems that are susceptible to jitter can be used in the control of HARD RTS as long as the cumulative value of periodicity deviation and worst-case response time is less than the response time required by that application. This artcle presents field-programmable gate array (FPGA) soft-core processors integration based on different instruction set architectures (ISA), custom central processing unit (CPU) datapath, dedicated hardware thread context, and hardware real-time operating system (RTOS) implementations. Based on existing work problems, one parameter that can negatively influence the performance of an RTS is the additional costs due to the operating system. The scheduling and thread context switching operations can significantly degrade the programming limit for RTS, where the task switching frequency is high. In parallel with the improvement of software scheduling algorithms, their implementation in hardware has been proposed and validated to relieve the processor of scheduling overhead and reduce RTOS-specific overhead.

APA, Harvard, Vancouver, ISO, and other styles

3

Cheng, Zhiping, Xiang Li, Zhongwen Li, Jikai Si, Shuai Xu, and Rui Nie. "Optimal Scheduling Strategy of Building Integrated Photovoltaic Microgrid Considering Virtual Energy Storage." Applied Sciences 10, no. 18 (2020): 6176. http://dx.doi.org/10.3390/app10186176.

Full text

Abstract:

Building integrated photovoltaic (BIPV) is one of the most efficient ways to utilize renewable energy in buildings. However, the stochastic characteristic of PV power generation and load challenges the optimal dispatch of the BIPV. This paper proposes an optimal scheduling strategy of BIPV microgrid considering virtual energy storage (VES), which intends to further improve the operating economy of a BIPV microgrid. Firstly, existing research findings and gaps in this research area were analyzed. Then, the mathematical model of each unit in the system was created, meanwhile, the air conditioner-based VES (ACVES) model and electric water heater-based VES (EWHVES) model are built by exploiting the heat/cold storage capability of building and the electric water heater, respectively. Next, the optimal scheduling model considering the VES is designed. Finally, the optimal scheduling model is solved by CPLEX to obtain the optimal scheduling strategy that reduces the operating cost of the system. Simulation results demonstrate that the proposed strategy can reduce the operating cost of the system. Furthermore, the VES shows the potential to replace the battery energy storage system.

APA, Harvard, Vancouver, ISO, and other styles

4

Chira-Chavala, T., and Christoffel Venter. "Cost and Productivity Impacts of a “Smart” Paratransit System." Transportation Research Record: Journal of the Transportation Research Board 1571, no. 1 (1997): 81–87. http://dx.doi.org/10.3141/1571-11.

Full text

Abstract:

The cost and productivity impacts of an advanced paratransit system are analyzed; the system uses a digital geographical data base and an automated trip scheduling system to automate vehicle and passenger scheduling functions. The results indicate that such a system enables transit agencies to accommodate rapid increases in the paratransit demand in an efficient manner, which could not be accomplished by a manual or semimanual scheduling system. For the case study presented, this new system resulted in 13 percent savings in unit transportation operating cost and a significant increase in the percentage of shared rides. These benefits were achieved without affecting passengers’ travel time or ride comfort.

APA, Harvard, Vancouver, ISO, and other styles

5

Huang, Yuehua, Qing Chen, Zihao Zhang, Xingtao Liu, Jintong Tu, and Lei Zhang. "Optimal Scheduling of Combined Electric and Heating Considering the Control Process of CHP Unit and Electric Boiler." Processes 11, no. 3 (2023): 753. http://dx.doi.org/10.3390/pr11030753.

Full text

Abstract:

In order to solve the problem of new energy consumption, a combined electric and heating system (CEHS) dynamic optimal scheduling method considering the optimal control of combined heat and power (CHP) unit and electric boiler is proposed from the perspective of unit technology transformation, to optimize the thermoelectric coupling relationship and improve the regulation capacity of the CEHS. Firstly, the electric and heat output models of CHP units considering the optimal control process, were constructed and used to analyze the electric–thermal characteristics and the impact of unit pressure safety under variable load input. On this basis, CHP units, electric boilers, wind power units, and thermal power units are optimally scheduled to minimize system operating costs. Finally, a simultaneous method of “discrete first, optimize later” is proposed to solve the dynamic optimal scheduling problem. The simulation results verify that the optimal scheduling considering the optimal control of CHP units and the retrofitting of electric boilers can promote the consumption of wind power and improve the overall operating economy of the system while ensuring the feasibility of the CEHS scheduling scheme.

APA, Harvard, Vancouver, ISO, and other styles

6

Muthana, Shatha Abdulhadi, and Ku Ruhana Ku-Mahamud. "Tri-objective generator maintenance scheduling model based on sequential strategy." PLOS ONE 17, no. 10 (2022): e0276225. http://dx.doi.org/10.1371/journal.pone.0276225.

Full text

Abstract:

A multi-objective modeling approach is required in the context of generator maintenance scheduling (GMS) for power generation systems. Most multi-objective modeling approaches in practice are modeled using a periodic system approach that caters for a fixed maintenance window. This approach is not suitable for different types of generating units and cannot extend the generator lifespan. To address this issue, this study proposes a tri-objective GMS model with three conflicting objectives based on the sequential system approach that accounts for operating hours and start-up times. The GMS model’s objectives are to minimize the total operation cost, maximize system reliability and minimize violation. The main difference between the proposed tri-objective GMS model and other multi-objective GMS models, is that the proposed model uses a sequential strategy based on operating hours and start-up times. In addition, the proposed model has considered the most important criteria in scheduling the generator maintenance, and this reflects the real-life requirements in electrical power systems. A multi-objective graph model is also developed to generate the maintenance units scheduling and used in developing the proposed Pareto ant colony system (PACS) algorithm. A PACS algorithm is proposed to implement the model and obtain solution for GMS. The performance of the proposed model was evaluated using the IEEE RTS 26, 32, and 36-unit systems dataset. The performance metrics used comprise the GMS model objectives. The experimental results showed that the obtained solution from the proposed tri-objective GMS model was a robust solution by considering the different initial operational hours of the units.

APA, Harvard, Vancouver, ISO, and other styles

7

Nagel, Everton, Ricardo Melo Czekster, Thais Webber, and César Augusto Missio Marcon. "A Framework Prototype for Multithreaded Implementation Over Micro-Controllers." Journal of Integrated Circuits and Systems 14, no. 1 (2019): 1–10. http://dx.doi.org/10.29292/jics.v14i1.39.

Full text

Abstract:

Multithreading is pervasive in embedded system applications development. The applications requirements are becoming more rigorous, demanding the execution of concurrent tasks that must also take into account modularity and flexibility. An important part of the operating systems development concerns the implementation of scheduling algorithms. In an embedded system context, it is essential to consider that the scheduling algorithm heavily influences application behavior. Due to restricted and finite hardware resources, it is important to evaluate the use of flexible algorithms to guarantee efficiency. Currently, projects for embedded operating systems do exist for microcontrollers’ devices that implement scheduling algorithms, however, the developer cannot change or add new scheduling policies without implementing kernel tweaks and modifications. The alternatives are not flexible when choosing the scheduling algorithm according to the application needs. This imposes restrictions to many systems, forcing them to run specific static scheduling algorithms because no other options are available. The objective of this work concerns the design and development of a framework that implements a microkernel with a modular scheduler unit, allowing the execution of tailored algorithms according to the application profile. The idea is to provide a flexible platform to conveniently select the most appropriated algorithm. We have employed low capacity hardware to implement multithreading patterns corresponding to sets of concurrent tasks, demonstrating the strengths of adopting our approach. Our results show that the use of modern techniques that combine modularity, multithreading, and scheduling methods for embedded systems yield best executions when compared to its sequential counterparts.

APA, Harvard, Vancouver, ISO, and other styles

8

Zhang, Zhi, Dan Xu, Xuezhen Chan, and Guobin Xu. "Research on Power System Day-Ahead Generation Scheduling Method Considering Combined Operation of Wind Power and Pumped Storage Power Station." Sustainability 15, no. 7 (2023): 6208. http://dx.doi.org/10.3390/su15076208.

Full text

Abstract:

In the proposed wind-storage combined operation technology, the storage side is foreseen to play a significant role in power system day-ahead generation scheduling. Based on the operational characteristics of pumped storage power stations, the day-ahead dispatching method of a power system with wind farms and pumped storage power stations is studied. The dispatching mode that aims at the lowest operating cost is proposed, taking into consideration the coordination relationship between the scheduling benefit of pumped storage power stations and the total peak-shaving economy of the system and the fluctuation of new energy output. First, taking the constraint of reservoir capacity, the output power, and the daily pumping power of the pumped storage power station into account, a day-ahead generation scheduling model is constructed, with the objective of minimizing costs. Then, the imperial competition algorithm is applied to the proposed model. Finally, the algorithm is compared with the standard particle swarm optimization algorithm. The simulation results based on standard 4-unit and 10-unit systems indicate that the proposed method is effective and robust for a power system with wind power and pumped storage power stations.

APA, Harvard, Vancouver, ISO, and other styles

9

Chapalkar*, Sandeep S., and Karibasappa K. "Relative Deadline Analysis in Multitasking RTS using RM & EDF Scheduling." International Journal of Recent Technology and Engineering 10, no. 1 (2021): 246–51. http://dx.doi.org/10.35940/ijrte.a5900.0510121.

Full text

Abstract:

In embedded systems the time required for any process to complete its execution in multitasking environment is an important factor to understand the performance of Real Time System (RTS) and its ability fulfill the deadline requirement of each process under different process load conditions. Even though some non-critical systems provide flexibility over deadlines, the hard real time systems are to be designed to meet the deadline requirement of all processes under peak process load condition. The number of processes available in scheduling queue may vary with time, the dynamic load on processing unit also changes proportionately which in turn affects the relative deadlines of each process. The scheduling policies considered are widely used scheduling policies like Rate Monotonic (RM) and Earliest Deadline First (EDF) to analyze and understand the impact on relative deadline with respect to number of scheduled processes. The real time execution timings of each process is observed on Raspberry Pi 3b+ processing unit operating at standard frequency of 700 MHz in multitasking mode of operation. The results obtained will decisively conclude the suitable scheduling policy for a set of processes under different process load conditions.

APA, Harvard, Vancouver, ISO, and other styles

10

Farah, Alaa, Hamdy Hassan, Alaaeldin M. Abdelshafy, and Abdelfatah M. Mohamed. "Optimal Scheduling of Hybrid Multi-Carrier System Feeding Electrical/Thermal Load Based on Particle Swarm Algorithm." Sustainability 12, no. 11 (2020): 4701. http://dx.doi.org/10.3390/su12114701.

Full text

Abstract:

In this paper, the optimum coordination of an energy hub system, fed with multiple fuel options (natural gas, wood chips biomass, and electricity) to guarantee economically, environmentally friendly, and reliable operation of an energy hub, is presented. The objective is to lessen the total operating expenses and CO2 emissions of the hub system. Additionally, the effect of renewable energy sources as photovoltaics (PVs) and wind turbines (WTs) on energy hub performance is investigated. A comparison of various configurations of the hub system is done. The proper planning of the hub elements is determined by a multi-objective particle swarm optimization (PSO) algorithm to achieve the lowest level of the gross running cost and total system emissions, simultaneously. The outcomes show that the natural gas turbine (NGT) is superior to the biomass generating unit in lowering the gross operating expenses, while using the biomass wood chips plant is most effective in lessening the total CO2 emissions than the NGT plant. Furthermore, the combination of the natural gas turbine, biomass generator, photovoltaics, and wind turbines enhances the operation of the hub infrastructures by lessening both the gross operating cost and overall CO2 emission simultaneously.

APA, Harvard, Vancouver, ISO, and other styles

More sources

Dissertations / Theses on the topic "UNIX (Operating System) Scheduling"

1

Grossman, Michael D. "A computer simulation of processor scheduling in UNIX 4.2BSD /." Online version of thesis, 1987. http://hdl.handle.net/1850/10295.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Pfeiffer, Joseph J. Jr. "The Unix Operating System for Telemetry Applications." International Foundation for Telemetering, 1990. http://hdl.handle.net/10150/613488.

Full text

Abstract:

International Telemetering Conference Proceedings / October 29-November 02, 1990 / Riviera Hotel and Convention Center, Las Vegas, Nevada<br>UNIX† is a very popular operating system, in use on a wide variety of hardware platforms, in a wide variety of environments, for a wide variety of problems. It has certain well-known deficiencies, however, for time-critical applications where guaranteed response time is required. This paper considers the use of Unix and related systems for telemetry applications. Of particular interest will be Unix as a possible operating system for NASA’s Data Handling Service.

APA, Harvard, Vancouver, ISO, and other styles

3

Tempo, Rinaldo. "In integrated user interface for UNIX operating system." Thesis, University of Bath, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.236451.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Petrick, Robert A. (Robert Allen). "Stateful task recovery in the UNIX operating system." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/11586.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Hays, Joseph A. "Optimizing memory management for computers using the UNIX operating system." Master's thesis, This resource online, 1995. http://scholar.lib.vt.edu/theses/available/etd-02022010-020223/.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Marino, Andre Adam. "Performance of the UNIX file system : Andre Adam Marino." Thesis, Queensland University of Technology, 1992.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

7

Chan, Susan Chui-Sheung. "Design and implementation of an event monitor for the unix operating system." Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/26187.

Full text

Abstract:

Tuning a computer system effectively requires prior studies on the performance of the system. There are different types of tools available to measure a system: hardware, firmware and software. This thesis presents the design and implementation of an event monitor, which is one type of software tools. The event monitor was developed on a SUN1 workstation running UNIX 4.2bsd version 1.4. Six types of events were selected to be measured, namely transactions, logins/logouts, pageins, pageouts, disk I/Os and forks/exits. The operating system was modified to include probes to trap these events. For a final testing of the event monitor, it was ported and installed onto a SUN3 workstation running UNIX 4.2bsd version 3.2. Measurements collected were analyzed by a capacity planning package condenser. The results give an indication of the system workload and the system performance. Benchmarks were also set up to measure the overhead incurred by the event monitor.<br>Science, Faculty of<br>Computer Science, Department of<br>Graduate

APA, Harvard, Vancouver, ISO, and other styles

8

Hanson, John Douglas. "UGURU : a natural language Unix consultant /." Online version of thesis, 1987. http://hdl.handle.net/1850/10133.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Hoffman, P. Kuyper. "A file server for the DistriX prototype : a multitransputer UNIX system." Master's thesis, University of Cape Town, 1989. http://hdl.handle.net/11427/17188.

Full text

Abstract:

Bibliography: pages 90-94.<br>The DISTRIX operating system is a multiprocessor distributed operating system based on UNIX. It consists of a number of satellite processors connected to central servers. The system is derived from the MINIX operating system, compatible with UNIX Version 7. A remote procedure call interface is used in conjunction with a system wide, end-to-end communication protocol that connects satellite processors to the central servers. A cached file server provides access to all files and devices at the UNIX system call level. The design of the file server is discussed in depth and the performance evaluated. Additional information is given about the software and hardware used during the development of the project. The MINIX operating system has proved to be a good choice as the software base, but certain features have proved to be poorer. The Inmos transputer emerges as a processor with many useful features that eased the implementation.

APA, Harvard, Vancouver, ISO, and other styles

10

Graunke, Kenneth William. "Extensible Scheduling in a Haskell-based Operating System." PDXScholar, 2010. https://pdxscholar.library.pdx.edu/open_access_etds/1.

Full text

Abstract:

This thesis presents Lighthouse, an experimental branch of the Haskell-based House operating system which integrates Li et al.'s Lightweight Concurrency framework. First and foremost, it improves House's viability as a "real operating system" by providing a new extensible scheduler framework which makes it easy to experiment with different scheduling policies. In particular, Lighthouse extends Concurrent Haskell with thread priority and implements a priority-based scheduler which significantly improves system responsiveness when compared with GHC's normal round-robin scheduler. Even while doing this, it improves on House's claim of being "written in Haskell" by moving a whole subsystem out of the complex C-based runtime system and into Haskell itself. In addition, Lighthouse also includes an alternate, simpler implementation of Lightweight Concurrency which takes advantage of House's unique setting (running directly on uniprocessor x86 hardware). This experience sheds light on areas that need further attention before the system can truly be viable---primarily interactions between blackholing and interrupt handling. In particular, this thesis uncovers a potential case of self-deadlock and suggests potential solutions. Finally, this work offers further insight into the viability of using high-level languages such as Haskell for systems programming. Although laziness and blackholing present unique problems, many parts of the system are still much easier to express in Haskell than traditional languages such as C.

APA, Harvard, Vancouver, ISO, and other styles

More sources

Books on the topic "UNIX (Operating System) Scheduling"

1

Liu, Yukun, Yong Yue, and Liwei Guo. UNIX Operating System. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-20432-6.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

The UNIX operating system. 2nd ed. Wiley, 1988.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

3

Susan, Richter, ed. The UNIX Operating System. 3rd ed. J. Wiley, 1994.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

4

Services, Kingston Polytechnic Computing. UNIX introduction: Using the UNIX operating system. Kingston Polytechnic, 1989.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

5

1954-, Salama Ben, ed. UNIX system programming. Addison-Wesley, 1987.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

6

Nemeth, Evi. Unix system administration handbook. 2nd ed. Prentice Hall PTR, 1995.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

7

Evi, Nemeth, ed. Unix system administration handbook. 3rd ed. Prentice Hall, 2001.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

8

Peek, Jerry D. Learning the UNIX Operating System. 4th ed. Edited by Tim O'Reilly and Gigi Estabrook. O'Reilly, 1998.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

9

Todino, Grace. Learning the UNIX Operating System. O'Reilly & Associates, 1994.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

10

Todino, Grace. Learning the UNIX Operating System. O'Reilly & Associates, 1994.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

More sources

Book chapters on the topic "UNIX (Operating System) Scheduling"

1

Chu, Hao-hua, and Klara Nahrstedt. "A soft real time scheduling server in UNIX operating system." In Interactive Distributed Multimedia Systems and Telecommunication Services. Springer Berlin Heidelberg, 1997. http://dx.doi.org/10.1007/bfb0000348.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

O’Regan, Gerard. "UNIX Operating System." In The Innovation in Computing Companion. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-02619-6_53.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Liu, Yukun, Yong Yue, and Liwei Guo. "UNIX File System." In UNIX Operating System. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-20432-6_6.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Liu, Yukun, Yong Yue, and Liwei Guo. "UNIX Process Management." In UNIX Operating System. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-20432-6_4.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Liu, Yukun, Yong Yue, and Liwei Guo. "UNIX Memory Management." In UNIX Operating System. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-20432-6_5.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Liu, Yukun, Yong Yue, and Liwei Guo. "UNIX Shell Introduction." In UNIX Operating System. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-20432-6_8.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Liu, Yukun, Yong Yue, and Liwei Guo. "Background of UNIX Operating System." In UNIX Operating System. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-20432-6_1.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Liu, Yukun, Yong Yue, and Liwei Guo. "How to Program in Bourne Shell (2)." In UNIX Operating System. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-20432-6_10.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Liu, Yukun, Yong Yue, and Liwei Guo. "UNIX in Internet and Computer Networking." In UNIX Operating System. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-20432-6_11.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Liu, Yukun, Yong Yue, and Liwei Guo. "How to Start." In UNIX Operating System. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-20432-6_2.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "UNIX (Operating System) Scheduling"

1

Moradi, H., A. Alasty, and F. Bakhtiari-Nejad. "Control of a Nonlinear Boiler-Turbine Unit Using Two Methods: Gain Scheduling and Feedback Linearization." In ASME 2007 International Mechanical Engineering Congress and Exposition. ASMEDC, 2007. http://dx.doi.org/10.1115/imece2007-42945.

Full text

Abstract:

To achieve a good performance of a boiler-turbine unit, dynamic variables such as steam pressure, water level of drum and electric output of turbine must be controlled. In this paper a nonlinear model of the boiler-turbine unit is considered in which the inputs are the valve positions of fuel flow, steam control, and feed-water flow. Using two control methods, feedback linearization and gain scheduling, a PI controller is designed. It is shown that by applying both methods, system goes from one operating point to another with an appropriate specification of time response. Results show that system with a controller designed based on gain scheduling method has a better time response from a nominal operating point to a far operating point. In addition, applying any of these control approaches guarantees robustness of the system against the uncertainties associated with dynamic model.

APA, Harvard, Vancouver, ISO, and other styles

2

Proctor, Frederick M., and William P. Shackleford. "Embedded Real-Time Linux for Cable Robot Control." In ASME 2002 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/detc2002/cie-34506.

Full text

Abstract:

Linux is a version of the Unix operating system distributed according to the open source model. Programmers are free to adapt the source code for their purposes, but are required to make their modifications or enhancements available as open source software as well. This model has fostered the widespread adoption of Linux for typical Unix server and workstation roles, and also in more arcane applications such as embedded or real-time computing. Embedded applications typically run in small physical and computing footprints, usually without fragile peripherals like hard disk drives. Special configurations are required to support these limited environments. Real-time applications require guarantees that tasks will execute within their deadlines, something not possible in general with the normal Linux scheduler. Real-time extensions to Linux enable deterministic scheduling, at task periods at tens of microseconds. This paper describes embedded and real-time Linux, and an application for distributed control of a Stewart Platform cable robot. Special Linux configuration requirements are detailed, and the architecture for teleoperated control of the cable robot is presented, with emphasis on the resolved-rate control of the suspended platform.

APA, Harvard, Vancouver, ISO, and other styles

3

Zhao, Yongjun, Vitali Volovoi, Mark Waters, and Dimitri Mavris. "A Sequential Approach for Gas Turbine Power Plant Preventive Maintenance Scheduling." In ASME 2005 Power Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/pwr2005-50131.

Full text

Abstract:

Traditionally the gas turbine power plant preventive maintenances are scheduled with constant maintenance intervals based on recommendations from the equipment suppliers. The preventive maintenances are based on fleet wide experiences, and they are scheduled in a one-size-fit-all fashion. However, in reality, the operating conditions for each gas turbine may vary from site to site, and from unit to unit. Furthermore, the gas turbine is a repairable deteriorating system, and preventive maintenance usually restores only part of its performance. This suggests the gas turbines need more frequent inspection and maintenance as it ages. A unit specific sequential preventive maintenance approach is therefore needed for gas turbine power plants preventive maintenance scheduling. Traditionally the optimization criteria for preventive maintenance scheduling is usually cost based. In the deregulated electric power market, a profit based optimization approach is expected to be more effective than the cost based approach. In such an approach, power plant performance, reliability, and the market dynamics are considered in a joint fashion. In this paper, a novel idea that economics drive maintenance expense and frequency to more frequent repairs and greater expense as the equipment and components age is introduced, and a profit based unit specific sequential preventive maintenance scheduling methodology is developed. To demonstrate the feasibility of the proposed approach, this methodology is implemented using a base load combined cycle power plant with single gas turbine unit.

APA, Harvard, Vancouver, ISO, and other styles

4

Rangan, Ravi M., Kenneth Maddux, and William Duwe. "A Practical Methodology to Automate Routine and Data Intensive Design Activities." In ASME 1994 International Computers in Engineering Conference and Exhibition and the ASME 1994 8th Annual Database Symposium collocated with the ASME 1994 Design Technical Conferences. American Society of Mechanical Engineers, 1994. http://dx.doi.org/10.1115/edm1994-0506.

Full text

Abstract:

Abstract Many engineering enterprises are involved in routine design operations. Routine design, in such cases, is concerned with varying the size and/or configuration of the chosen system using established solution principles, i.e. no new solution principles are introduced. However, in most engineering environments that deliver custom products to customers, the processes followed in ensuring that these routine designs are viable, are dependent on complex interactions within the organization. For example, customer delivery requirements may dictate material selection based on timely availability and scheduling logistics, manufacturability, adherence to codes and standards and test procedures, in addition to technical design issues such as stress and fit calculations. This paper explores a practical and generic approach to help understand the design process, and then to subsequently prioritize the appropriate automation potential from a business standpoint. Using a structured methodology that equally emphasizes business process modeling, design process modeling, information modeling and final process implementation, the engineering enterprise is able to identify a technical focus area and an associated implementation plan. Upon identifying the technical focus, structured methodologies are again applied to develop and implement the design automation function. We illustrate this methodology using, as an example, a production-level automation capability that was developed within the framework of routine design operations at TDW, a designer and manufacturer of pipeline fittings, a company that services the major oil, gas and utilities companies. The complete program was carried out over a two year period and the company has successfully reduced the tedious manual design process of complex pressure vessel systems to a streamlined automated process that has resulted in vast improvements in time to market, product quality and consistency, and significantly shorter design cycle times. This automated system was developed on the UNIX platform, and integrates TDW proprietary algorithms and rules with SDRC’s I-DEAS (SDRC, 1994), a geometric modeling system, ORACLE (ORACLE, 1992), a database management system, and KES (KES, 1988), a commercial expert system shell.

APA, Harvard, Vancouver, ISO, and other styles

5

Melnyk, Anatoliy, Viktor Melnyk, and Andriy Kit. "UNIX-like operating system extension for real-time FPGA-based SCCS support." In 2017 9th IEEE International Conference on Intelligent Data Acquisition and Advanced Computing Systems: Technology and Applications (IDAACS). IEEE, 2017. http://dx.doi.org/10.1109/idaacs.2017.8095042.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Montrucchio, Bartolomeo, Maurizio Rebaudengo, and Alejandro Velasco. "Fault injection in the process descriptor of a Unix-based operating system." In 2014 IEEE International Symposium on Defect and Fault Tolerance in VLSI and Nanotechnology Systems (DFT). IEEE, 2014. http://dx.doi.org/10.1109/dft.2014.6962080.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Chirila, Ciprian-Bogdan, and Gaultier Parain. "Metamodels for Auto-Generative Learning Objects Dedicated to Unix Operating System Disciplines." In 2018 22nd International Conference on System Theory, Control and Computing (ICSTCC). IEEE, 2018. http://dx.doi.org/10.1109/icstcc.2018.8540680.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Cao, Qing, Tarek Abdelzaher, John Stankovic, and Tian He. "The LiteOS Operating System: Towards Unix-Like Abstractions for Wireless Sensor Networks." In 2008 7th International Conference on Information Processing in Sensor Networks (IPSN). IEEE, 2008. http://dx.doi.org/10.1109/ipsn.2008.54.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Lefebvre, R., F. Poirier, and G. Duncan. "Speech interface for a man-machine dialog with the unix operating system." In 2nd International Conference on Spoken Language Processing (ICSLP 1992). ISCA, 1992. http://dx.doi.org/10.21437/icslp.1992-381.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Vernotte, Alexandre, Pontus Johnson, Mathias Ekstedt, and Robert Lagerstrom. "In-Depth Modeling of the UNIX Operating System for Architectural Cyber Security Analysis." In 2017 IEEE 21st International Enterprise Distributed Object Computing Workshop (EDOCW). IEEE, 2017. http://dx.doi.org/10.1109/edocw.2017.26.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "UNIX (Operating System) Scheduling"

1

Graunke, Kenneth. Extensible Scheduling in a Haskell-based Operating System. Portland State University Library, 2000. http://dx.doi.org/10.15760/etd.1.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Golub, David B. Operating System Support for Coexistence of Real-Time and Conventional Scheduling. Defense Technical Information Center, 1994. http://dx.doi.org/10.21236/ada288584.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Fisher, D. K., and K. M. Tran. Comparison of IEEE Portable Operating System Interface (POSIX). Part 1 and X/Open Single Unix Specifications (SUS). Defense Technical Information Center, 1995. http://dx.doi.org/10.21236/ada298955.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Yang, Yu, and Hen-Geul Yeh. Electrical Vehicle Charging Infrastructure Design and Operations. Mineta Transportation Institute, 2023. http://dx.doi.org/10.31979/mti.2023.2240.

Full text

Abstract:

California aims to achieve five million zero-emission vehicles (ZEVs) on the road by 2030 and 250,000 electrical vehicle (EV) charging stations by 2025. To reduce barriers in this process, the research team developed a simulation-based system for EV charging infrastructure design and operations. The increasing power demand due to the growing EV market requires advanced charging infrastructures and operating strategies. This study will deliver two modules in charging station design and operations, including a vehicle charging schedule and an infrastructure planning module for the solar-powered charging station. The objectives are to increase customers’ satisfaction, reduce the power grid burden, and maximize the profitability of charging stations using state-of-the-art global optimization techniques, machine-learning-based solar power prediction, and model predictive control (MPC). The proposed research has broad societal impacts and significant intellectual merits. First, it meets the demand for green transportation by increasing the number of EV users and reducing the transportation sector’s impacts on climate change. Second, an optimal scheduling tool enables fast charging of EVs and thus improves the mobility of passengers. Third, the designed planning tools enable an optimal design of charging stations equipped with a solar panel and battery energy storage system (BESS) to benefit nationwide transportation system development.

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!