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2019 4th Asia Conference on Power and Electrical engineering, ACPEE 2019

作者： Sun, Shuqin Li, Yongbin Xu, Zhengqing Li, Mingjia Wang, Can College of Instrumentation and Electrical Engineering Jilin University Lab. of Geo-Exploration and the Instrumentation Ministry of Education of China Changchun130026 China Beijing Kedong Electric Power Control System Co.Ltd Beijing100192 China

At present, China's power system is developing in the direction of AC-DC parallel connection. AC-DC hybrid transmission has become the inevitable pattern of China's future power grid. In the operation of AC/DC hybrid system, the optimization of multiple indexes is often considered. One of the economic problems of system operation is how to minimize the operation cost of the system. This requires the optimal solution of a system of nonlinear equations with constraints. Among the existing algorithms, the interior point method has excellent convergence performance and has been widely used in power system. In this paper, the basic principle of interior point method is introduced, and the interior point method is used to optimize the AC and DC power flow obtained. With the network operation cost as the objective optimization index. The Matlab software is used for programming and simulation calculation. On the basis of verifying the effectiveness of the algorithm, the algorithm is transplanted into the large network for calculation and analysis, and the adaptability of the test algorithm. © Published under licence by IOP Publishing Ltd.

关键词： Electric load flow

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Application of Distributed control system for Monitoring and control of Three Tank Level control

Application of Distributed Control System for Monitoring and...

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IEEE International Conference on Recent Trends in Electronics, Information & Communication Technology (RTEICT)

作者： N S Pooia Manasa Ghatke Sandra D'souza Instrumentation and control system Engineering Manipal institute of technology Manipal India

ISBN: (数字)9781538624401

ISBN: (纸本)9781538624418

In this paper describes our experiences designing controller to control the three tank level control system. The controller used is Distributed control system(DCS) using CentumVP software. We performed experiment measuring the Proportional Integral Derivative (PID) values. We found that our Distributed control system controller outperformed stable.

关键词： Valves Level control Instruments Decentralized control Software Liquids

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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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Online PD Measurement by Detecting the Pulsed Compensating Current in High Voltage Equipment 8

Online PD Measurement by Detecting the Pulsed Compensating C...

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8th International Conference on engineering, Applied Sciences, and Technology, ICEAST 2022

作者： Srinangyam, Chissanupong Pannil, Pittaya Nimsanong, Phethai Chuayin, Chaitawat Thungsook, Kittisak Pattanadech, Norasage School of Engineering King Mongkut's Institute of Technology Ladkrabang Electrical Engineering Dept. Bangkok Thailand School of Engineering King Mongkut's Institute of Technology Ladkrabang Instrumentation and Control Engineering Dept. Bangkok Thailand Power System Operation and Control Section 2 Power System Control Dept. Metropolitan Electricity Authority Bangkok Thailand School of Engineering Rajamangala University of Technology Rattanakosin Electrical Engineering Dept. Bangkok Thailand

ISBN: (数字)9781665459198

ISBN: (纸本)9781665459198

This paper discusses the pulsed compensating current caused by partial discharge (PD) phenomena that flows inside the electrical equipment installed in the power system. Such electrical equipment like to be the capacitive coupler in the partial discharge test circuit. In order to study the pulsed compensating current of the PD measurement, artificial PD source such as corona, surface, and internal was used in this experiment. The electrical equipment like surge arrester combined with HFCT sensor utilized to detect the PD pulse current. Furthermore, this proposed technique has been applied for online PD measurement in substations. It was found that the surge arrester could compensate for the pulse current arising from the PD source. This study will be helpful information for online PD measurement. © 2022 IEEE.

关键词： Partial discharges

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Adversarially Robust Reinforcement Learning for Urban Traffic Signal control 5

Adversarially Robust Reinforcement Learning for Urban Traffi...

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5th IEEE International Conference on Technology, Informatics, Management, engineering and Environment, TIME-E 2024

作者： Hamzah, Muhammad Shafly Joelianto, Endra Sutarto, Herman Yoseph Putri, Adiyana Institut Teknologi Bandung Instrumentation and Control Master Program Bandung Indonesia Institut Teknologi Bandung Instrumentation Control and Automation Research Group Bandung Indonesia PT. Pusat Riset Energi Department of Intelligent System Bandung Indonesia Institut Teknologi Bandung Doctoral Program of Engineering Physics Bandung Indonesia

ISBN: (纸本)9798350364743

Urban traffic congestion presents critical challenges, resulting in delays, environmental pollution, and significant economic costs. While traditional traffic control methods, such as fixed-time and adaptive systems, have been widely implemented, they often fail in unpredictable conditions, particularly when confronted with noisy or inaccurate data. This research proposes a robust reinforcement learning (RL) solution for traffic signal control using the RADIAL-DQN (Robust Adversarial Loss DQN) algorithm. Integrating adversarial training enhances the system's robustness to real-world uncertainties. Evaluations conducted using a SUMO traffic simulation show that the robust agent produced an increase of only 60.71% in queue length under a projected gradient descent (PGD) adversarial attack, outperforming standard RL agents, which experienced an 89% increase. These results demonstrate the potential of robust RL to improve both the reliability and scalability of urban traffic control systems. © 2024 IEEE.

关键词： Traffic signals

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Fuzzy Logic Based Autonomous Parallel Parking system with Kalman Filtering

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SICE Journal of control, Measurement, and system Integration 2010年第4期3卷 266-271页

作者： Benjamas Panomruttanarug Kohji Higuchi Department of Control System and Instrumentation Engineering King Mongkuts University of Technology Thonburi Department of Electronic Engineering University of Electro-Communications

This paper presents an emulation of fuzzy logic control schemes for an autonomous parallel parking system in a backward maneuver. There are four infrared sensors sending the distance data to a microcontroller for generating an obstacle-free parking path. Two of them mounted on the front and rear wheels on the parking side are used as the inputs to the fuzzy rules to calculate a proper steering angle while backing. The other two attached to the front and rear ends serve for avoiding collision with other cars along the parking space. At the end of parking processes, the vehicle will be in line with other parked cars and positioned in the middle of the free space. Fuzzy rules are designed based upon a wall following process. Performance of the infrared sensors is improved using Kalman filtering. The design method needs extra information from ultrasonic sensors. Starting from modeling the ultrasonic sensor in 1-D state space forms, one makes use of the infrared sensor as a measurement to update the predicted values. Experimental results demonstrate the effectiveness of sensor improvement.

关键词： parallel parking fuzzy logic wall following Kalman filtering

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A High Speed Autofocusing system for Micro system Applications

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电子科学学刊（英文版） 2016年第1期14卷 73-79页

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

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Modern development of low cost RT industrial process control based on matlab-simulink and PAC

Modern development of low cost RT industrial process control...

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作者： Tutsch, Michal Konarik, Petr Department of Measurement and Control Faculty of Electrical Engineering and Computer Science VSB - Teclmical University of Ostrava Ostrava Czech Republic Department of Control System and Instrumentation Faculty of Mechanical Engineering VSB - Teclmical University of Ostrava Ostrava Czech Republic

ISBN: (纸本)9781424473359

The paper presents modern advanced development methods of control systems that minimizes the cost of development of applications which are widely applicable in industrial control of whole range of processes. Unlike the classical way of design and testing control algorithms which are based on expensive RT measurement cards or dSpace, this solution is based on industrial controllers WinPLC/WinPAC. This enables so called rapid-prototyping of control algorithms directly from Matlab-Simulink into target platform. It was used muItiplatform control system REX as a bridge between Matlab and the target platform. The paper describes whole design of control algorithms and control schemes, simulation of prepared schemes, uploading control schemes into target platform of WinPLC. Also possibilities of remote data transfer and data storage are mentioned. The real measurement on hydraulic industrial system proved its limits that were also explained in this paper.

关键词： Simulink

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Ultrasonic inspection system for detecting small flaws at far surface of steel plate

Ultrasonic inspection system for detecting small flaws at fa...

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7th Annual International Conference on Electrical engineering/Electronics, Computer, Telecommunications and Information Technology, ECTI-CON 2010

作者： Vilasmongkolchai, T. Noipitak, M. Kaewtrakulpong, P. Prateepasen, A. Department of Control System and Instrumentation Engineering King Mongkut's University of Technology Thonburi Thungkru Bangkok 10140 Thailand Department of Production Engineering King Mongkut's University of Technology Thonburi Thungkru Bangkok 10140 Thailand

ISBN: (纸本)9789746724913

This paper presents the development of inspection system using ultrasonic for steel plate manufacturing. Generally, internal defects in the final product of steel plate are inspected manually by human operators, which is a time consuming process. In this research, the crystal of an ultrasonic probe at natural frequency suitable for steel plate examination was developed. In our design, high sensitivity (i.e. high signal peak amplitude) and good resolution were achieved using a (water coupling) probe structure, without ceramic wear plate, and a signal processing called the 1-bit technique. Backing material of the probe was carefully designed and experimented to obtain proper impedance matching with the probe's crystal by varying its material composition. Jig with a dual-probe support to speed up the inspection of a steel plate was implemented. Moreover, the 1-bit technique was applied to improve resolution of the inspection and to detect small flaws close to the far surface of the steel plate. The developed probe has more sensitivity than that of commercial probes in terms of frequency response. The 1-bit processing technique has been realized and simulated and it showed advantages over the conventional method for processing time and accuracy.

关键词： Probes

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Design of a Gough-Stewart platform for micro-surgical operations

Design of a Gough-Stewart platform for micro-surgical operat...

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2011 IEEE/SICE International Symposium on system Integration, SII 2011

作者： Kim, Sung Mok Lim, Hoon Cheong, Joono Yi, Byung Ju Kim, Whee Kuk Korea University Chochiwon Korea Republic of Hanyang University Ansan Korea Republic of Department of Control and Instrumentation Engineering Korea University Chochiwon Korea Republic of Department of Electronics System Engineering Hanyang University Ansan Korea Republic of

ISBN: (纸本)9781457715235

In general, optimal design for the mechanism such as Gough-Stewart Platform (GSP) does not take into account practical factors of the mechanism such as its component weight and size, and mechanical interferences among them, etc. Particularly, in designing a robot module for micro-surgical operations which would be mounted at the end of a macro manipulator, its light weight, compactness, as well as good kinematic performance are important design aspects that should be considered. In this paper, design of a compact GSP module incorporating additional practical design factors such as mechanical interferences among mechanism components is discussed. A modified design for micro-surgical operations which requires a small operation region represented as a nominal operation point is suggested and it is shown that its performance exceeds one of the typical GSP design under the given practical component limitations such as actual length of active prismatic joints. © 2011 IEEE.

关键词： Mechanisms

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