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Robot Vision system for Coordinate Measurement of Feature Points on Large Scale Automobile Part

电子科学学刊（英文版） 2016年第1期14卷 80-86页

作者： Pongsak Joompolpong Pradit Mittrapiyanuruk Pakorn Keawtrakulpong the Department of Control System and Instrumentation Engineering Faculty of Engineering King Mongkut’s University of Technology Thonburi Bangkok 10140 Thailand the Department of Mathematics Faculty of Science Srinakharinwirot University Bangkok 10110 Thailand

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Admissible sets for chance-constrained difference inclusions

Admissible sets for chance-constrained difference inclusions

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American control Conference

作者： James Fleming Mark Cannon Department of Control System and Instrumentation Engineering King Mongkut's University of Technology Thonburi Bangkok Thailand Civil and Environmental Engineering Department University of Maryland

ISBN: (纸本)9781467386838

We study the Maximal Admissible Set (MAS) of a linear difference inclusion under a chance constraint involving random variables with bounded support. After showing that it is difficult to compute this set in general, we suggest inner and outer approximations that can be computed using existing algorithms. The inner approximations are themselves constraint admissible sets and can be represented by a finite number of chance constraints. We give examples to demonstrate the low level of conservatism of these approximations and to illustrate the potential application in Model Predictive control.

关键词： Random variables Uncertainty Stochastic processes Robustness Predictive control Time factors Probabilistic logic Random variable Probabilistic logic Predictive control Time Factors Markov chain Stochastic Processes Robustness Uncertainty Conservatism

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Flight schedule creating based on mathematical model 15

Flight schedule creating based on mathematical model

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15th Conference on Applied Mathematics 2016, APLIMAT 2016

作者： Jelen, Tomasz Teichmann, Dušan VŠB - Technical University of Ostrava Department of Control System and Instrumentation Faculty of Mechanical Engineering 17. listopadu 15 Ostrava - Poruba708 33 Czech Republic VŠB - Technical University of Ostrava Institute of Transport Faculty of Mechanical Engineering 17. listopadu 15 Ostrava - Poruba708 33 Czech Republic

ISBN: (纸本)9788022745314

The article deals with the exact approach convenient for flight schedule creating offering regular airline transportation service. The proposed exact approach is based on linear mathematical model. Out of the specified expected demand linkset the model is designed to select particular subset maximum aircraft fleet utilization. The model results represent optimal connection network at defined time periods. The arithmetical experiments have been carried out on model examples.

关键词： Air transportation

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Robust repetitive control with feedforward scheme for stand-alone inverter

Robust repetitive control with feedforward scheme for stand-...

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International Conference on control, Automation and systems ( ICCAS)

作者： Wiboon Sintanavevong Sudchai Boonto Sumate Naetiladdanon Department of Control System and Instrumentation Engineering King Mongkut's University of Technology Thonburi Bangkok Thailand Department of Electrical Engineering King Mongkut's University of Technology Thonburi Bangkok Thailand

ISBN: (纸本)9781467390583

This paper proposes the combining of μ-synthesis robust repetitive control and feedforward control scheme to the design of constant sinusoidal voltage tracking for a stand-alone three-phase constant voltage inverter. The controller designed problem is defined in the form of two-degree-of-freedom feedback-feedforward controller. The D-K iterative algorithm is used to solve for both parts of the controller in one procedure to get the optimal controller. The proposed control scheme inherits the advantage of the robust repetitive control but does better in tracking performance. Simulation studies of the system were carried out using Matlab/SIMULINK to verify the effectiveness of the controller. The results show that the proposed control scheme outperforms the previous works under the scenario cases.

关键词： Feedforward neural networks Robustness Inverters Voltage control Uncertainty Closed loop systems

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Evaluation of a 500-N deadweight force standard machine at NIMT

Evaluation of a 500-N deadweight force standard machine at N...

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The Society of Instrument and control Engineers Annual Conference 2015

作者： Kittipong Chaemthet Ake Chaisawadi Department of Control System and Instrumentation Engineering King Mongkut's University of Technology Thonburi

A 500-N deadweight force standard machine(DWM) has been developed for calibrating force proving instrument of small force ranges at National Institute of Metrology, Thailand(NIMT). The DWM is able to generate calibration forces ranging from 2 N to 500 N with the relative expanded uncertainty of 5×10-5. This machine can be divided into six calibration ranges, which are 10 N, 20 N, 50 N, 100 N, 200 N and 500 N. To verify performance of the machine, this paper shows the evaluation of relative uncertainty in the range of 50 N to 500 N. The force transducer was calibrated by the machine according to ISO376:2011[1]. The calibration result of force transducers has shown repeatability and reproducibility. The relative deviation of the calibration errors were less than 5×10-5 at the 50 % to 100 % of the capacity of force transducer.

关键词： Deadweight force standard machine,DWM,uncertainty,force-proving instrument,ISO 376:2011

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Early-stage resource evaluation method for ECU integration of hybrid electric vehicles 28

Early-stage resource evaluation method for ECU integration o...

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28th International Electric Vehicle Exhibition, EVS 2015

作者： Kang, Eunhwan Park, I. Chung, J. Sunwoo, M. Lee, W. Youn, J. Yim, S. Won, D. Department of Automotive Engineering Graduate School Hanyang University Seoul Korea Republic of Hanyang University Seoul Korea Republic of Department of Automotive Engineering Hanyang University Seoul Korea Republic of Department of Control and Instrumentation Engineering Changwon National University Changwon-si Kyungsangnam-do Korea Republic of Hyundai-Kia R and D Center Eco-Vehicle Control System Development Team Hwaseong-si Gyeonggi-do Korea Republic of

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Three level single phase half bridge NPCVSI induction heating with combined phase shift PWM and PFM digital power control

Three level single phase half bridge NPCVSI induction heatin...

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International Conference on Electrical Machines and systems (ICEMS)

作者： Sittichok Kaewoonruan Santi Nurach Wanchak Lenwari Department of Electrical Engineering King Mongkut's University of Technology Thonburi Thailand Department of Control System and Instrumentation Engineering King Mongkut's University of Technology Thonburi Thailand

This paper proposed a combined phase shift PWM and PFM controller of a high frequency three level single-phase half bridge neutral point clamp voltage source inverter (NPCVSI) induction heating application. In heating operation, output power and switching frequency of the inverter are controlled by digital controller to achieve maximum output power and maintain zero voltage switching (ZVS) condition. The microcontroller based digital controller, PI controller, is implemented in a 16-bit microcontroller.

关键词： Decision support systems Inverters Power generation Frequency control Switching frequency control systems Zero voltage switching

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Simple on-line observation and compensation of dead-time effects

Simple on-line observation and compensation of dead-time eff...

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14th International Conference on Railway engineering Design and Optimization, COMPRAIL 2014

作者： Jung, S.M. Park, C.B. Kim, J.H. Lee, S.H. Kim, H.W. Advanced Traction and Noncontact Feeding System Research Team Korea Railroad Research Institute Korea Republic of Department of Control and Instrumentation Engineering Korea National University of Transportation Korea Republic of

ISBN: (纸本)9781845647667

Generally, there exist voltage differences between the voltage commands and the output voltages of the three-phase pulse-width modulated (PWM) voltage-source inverter (VSI), which are caused by the intended dead-time to prevent the armshort of a leg and the nonlinearities of switching devices. These voltage differences (or voltage distortion) affect the current distortion, torque pulsations, and degradation of control performances. To overcome these drawbacks, a simple and low-cost observation and compensation method of the voltage distortion is proposed. The proposed method is employing model reference adaptive system (MRAS) techniques and does not require any additional hardware circuits such as voltage sensors. The voltage distortions caused by the nonlinearities of the switching devices are estimated by a voltage distortion observer which is based on the electrical model of the PMSM. And the estimated voltage distortions are fed-forward to compensate the voltage commands. In comparison with the previous existing methods, the proposed method has a simple structure and good performances. Also, it can be implemented without any extra devices such as voltage sensors and the computing effort is very small. The execution of the algorithm can be easily embedded in the existing systems without major modification. To show the effectiveness of the proposed method, the experiments are carried out for the digitally controlled PMSM drive system. The experimental results verify the validity of the proposed method and show that the proposed method gives good performance and practical value. © 2014 WIT Press.

关键词： Electric inverters

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Grid Connected Inverter control by Two-Degree-of-Freedom Robust H_∞ Repetitive

Grid Connected Inverter Control by Two-Degree-of-Freedom Rob...

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International Conference on Electrical engineering/Electronics, Computer, Telecommunications and Information Technology

作者： Worasak Sriart Sudchai Boonto Wanchak Lenwari Sumate Naetiladdanon Department of Control System and Instrumentation Engineering King Mongkut's University of Technology Department of Electrical Engineering King Mongkut's University of Technology Thonburi

ISBN: (纸本)9781479929948

This paper presents a robust control strategy for voltage controller of grid-connected inverter. The combining of feedforward control and H_∞ repetitive control is introduced to improve tracking performance and reduce periodic disturbance. The feedforward part of 2DOF controller extends gain and tracking bandwidth of the feedback controller when comparing to 1DOF controller. The proposed controller achieves the robust regulate voltage and tracking performance in dynamic responses. The controller is tested by simulation in MATLAB/SIMULINK. The results show the proposed controller obtains better performance under different scenarios (grid-connected mode and grid frequency variation).

关键词： visual tracking feedback controller controllers robust control strategy Voltage regulators FEEDFORWARD control Inventors Repetitive grids Grid VOLTAGE Gain

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Genetic Algorithm Based Speed controller Design of IPMSM Drive for EV

Genetic Algorithm Based Speed Controller Design of IPMSM Dri...

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International Conference on Electrical engineering/Electronics, Computer, Telecommunications and Information Technology

作者： Pakorn Chottiyanont Mongkol Konghirun Wanchak Lenwari Department of Electrical Engineering King Mongkut's University of Technology Thonburi Department of Control System and Instrumentation Engineering King Mongkut's University of Technology Thonburi

ISBN: (纸本)9781479929948

In recent years, the development of the electrical vehicle (EV) in particular the performance enhancement of speed control has been widely attention. To ensure fast dynamic response and stable operation, the design of speed controller is critical and requires considerable effort. This paper proposes an automated design employed genetic algorithm (GA) to optimize PI speed controller of interior permanent magnet synchronous motor (IPMSM) used in the EV. The drive control system is designed on the basis of vector control scheme incorporated with the maximum torque per ampere (MTPA) control strategy to improve the drive performance. The optimization method provides an optimum solution in terms of both speed response and steady-state error. The simulation results verify the effectiveness of the proposed approach.

关键词： Genetic algorithm (GA) MTPA IPMSM Electric vehicle (EV)

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