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检索条件"机构=Control System and Instrumentation Engineering"

共 229 条记录，以下是81-90 订阅

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Research on distributed grid connected capacity optimization method for power system pre dispatch 4

Research on distributed grid connected capacity optimization...

引用

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

作者： Xu, Zhengqing Yan, Faqi Liu, Zhicheng Xiao, Yanwei Sun, Shu-Qin Yang, Jing Yan, Wen-Li Beijing Kedong Electric Power Control System Co.Ltd Beijing100192 China State Grid Huazhong Electric Power Control Subcenter Wuhan430077 China State Grid Zhejiang Electric Power Co.Ltd Hangzhou310007 China College of Instrumentation and Electrical Engineering Jilin University Lab. of Geo-Exploration and the Instrumentation Ministry of Education of China Changchun130026 China

The particle swarm optimization algorithm with adaptive weight and Newton-Raphson method are studied to connect the distributed energy to the grid in this paper. We will discuss the research status of the current stage of the project. The basic principles and processes of particle swarm optimization algorithm and Newton-Raphson method are expounded, and their improvement and combination are made (as well as their improvement and combination ) so that they can optimize reactive power for networks with distributed energy better. Then the improved algorithm is applied to the IEEE-14 and IEEE-30 models and the reconstruction results are analyzed. The network loss and reactive power of the reconstruction network are declined, the voltage quality is improved. The SIMULARTOR software is used to establish and calculate the power flow of original model and reconstruction model of IEEE-14 and IEEE-30 respectively. The economic factors with grid supply point and connected capacity are analyzed to obtain the best ratio of power system at the same time. Compared with the above results, the results are basically consistent, and the accuracy and reliability of the algorithm are verified. Finally, considering the economic factors of the system, adjusting the connected capacity of the distributed energy-wind power and photovoltaic, and obtaining the best access ratio (proportion), the economical efficiency of the system is improved, and it has referential value. © Published under licence by IOP Publishing Ltd.

关键词： Reactive power

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Enslavement and control in dq synchronous frame for using a cascade multilevel NPC structure

Enslavement and control in dq synchronous frame for using a ...

引用

2008 3rd International Design and Test Workshop, IDT 2008

作者： Bouchafaa, F. Arezki, S. Boudour, M. Berkouk, E.M. Laboratory of Instrumentation and Engineering System University of Science and Technology Houari Boumediene BP N32 EL-Alia Beb Ezouar Algiers Algeria Laboratory of Process Control Departement Electrical Engineering Polytechnic National School Algiers Street Hassen Badi El Harrach Algiers Algeria

ISBN: (纸本)9781424434770

The aim of this paper is to give a solution to unbalance problem of the input DC voltages of the nine-level NPC-VSI in dq synchronous frame. For that, we used in high voltage and great power applications, one two-level PWM current rectifier-nine-level NPC VSI cascade. In the first part, we develop a knowledge model of the nine-level NPC VSI and propose a space vector modulation of this converter using eight bipolar carriers. After that, this study shows particularly the problem of the stability of the DC voltages of the inverter. Then, we propose a solution to the problem by employed closed loop regulation using classic PI regulator mode in d-q synchronous frame. We add a clamping bridge to stabilise the multi DC input voltages of the nine-level NPC VSI. This cascade found applications in great power and high voltage fields as electrical traction.

关键词： Pulse width modulation

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A comparative study of rounded and strip electrostatic sensors for non-contact measurement of cable speed

A comparative study of rounded and strip electrostatic senso...

引用

IEEE instrumentation and Measurement Technology Conference

作者： Shaun J Rodrigues Yong Yan Instrumentation Control and Embedded System Research Group School of Engineering and Digital Arts University of Kent Canterbury Kent UK

This paper presents the recent progress in the design and implementation of a rounded electrostatic sensor for the speed measurement of non-flat static materials such as rounded cables in comparison to a strip type electrostatic sensor. Experimental tests were conducted on a motorized test rig for a speed ranging from 0.50m/s to 10m/s. The advantages and limitations of the two types of electrostatic sensor for non-contact speed measurement are discussed in detail. The results indicate that the rounded sensor outperforms the strip type sensor in terms of sensitivity, signal-to-noise ratio, repeatability, and accuracy.

关键词： Sensors Strips Electrostatics Velocity measurement Correlation Optical fiber cables Accuracy

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Artificial immune network-based cooperative control in collective autonomous mobile robots

Artificial immune network-based cooperative control in colle...

引用

IEEE International Workshop on Robot and Human Communication (ROMAN)

作者： Dong-Wook Lee Kwee-Bo Sim Robotics and Intelligent Information System Laboratory Department of Control and Instrumentation Engineering Chung Ang University Seoul South Korea

In this paper, we propose a method of cooperative control based on immune system in distributed autonomous robotic system (DARS). Immune system is living body's self-protection and self-maintenance system. Thus these features can be applied to decision making of optimal swarm behavior in dynamically changing environment. For the purpose of applying the immune system to DARS, a robot is regarded as a B lymphocyte (B cell), each environmental condition as an antigen and a behavior strategy as an antibody respectively. The executing process of proposed method is as follows: when the environmental condition changes, a robot selects an appropriate behavior strategy, and its behavior strategy is stimulated and suppressed by other robot using communication. Finally, such stimulated strategy is adopted as a swarm behavior strategy. This control scheme is based on clonal selection and idiotopic network hypothesis, and it is used for decision making of an optimal swarm strategy.

关键词： Intelligent networks Mobile robots Immune system control systems Intelligent robots Mobile communication Decision making Humans Robot sensing systems Intelligent systems

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Development of Thai word recognition system for esophageal speaker using model adaptation based on HMM

Development of Thai word recognition system for esophageal s...

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2nd International Convention on Rehabilitation engineering and Assistive Technology, i-CREATe 2008

作者： Sabayjai, Piyada Boonpranuk, Panuthat Polwisate, Wutthichai Kayasith, Prakasit Control System and Instrumentation Engineering King Mongkut's University of Technology Thonburi 126 Prachaautid Rd. Bangmod District Bangkok Thailand Assistive Technology Center National Electronics and Computer Technology Center 112 Thailand Science Park Thathumthani Thailand

ISBN: (纸本)9789810803681

The paper represents a method to develop an automatic speech recognition system for Thai esophageal speaker. Using model adaptation approach, a speech recognition built by normal speech corpus is modified by esophageal speech model based on Hidden Markov Models (HMMs). The aim of the paper is to improve the recognition rate of esophageal speech using two different approach;model adaptation technique and three cepstral normalization technique. The experimental results show that the model adaptation technique can significantly improve the recognition rate of esophageal speech from 12.6% up to 78.1%. Moreover, the recognition rate is raised up to 93.0% when a cepstral normalization technique (CMMN) is combined to the model adaption.

关键词： Hidden Markov models

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Improvement of esophageal speech by Adaptive Line Enhancement with bias model

Improvement of esophageal speech by Adaptive Line Enhancemen...

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2nd International Convention on Rehabilitation engineering and Assistive Technology, i-CREATe 2008

作者： Tuangpermsub, Nuntaporn Boonpranuk, Panuthat Polwisate, Wutthichai Kayasith, Prakasit Control System and Instrumentation Engineering King Mongkut's University of Technology Thonburi 126 Prachaautid Rd. Bangmod District Bangkok Thailand Assistive Technology Center National Electronics and Computer Technology Center 112 Thailand Science Park Thathumthani Thailand

ISBN: (纸本)9789810803681

The main objective of this research is to develop a portable speech enhancement device that would sequentially estimate clean speech and re-synthesis a more intelligible speech output for esophageal speaker. To resolve a real time processing problem, we propose a noise reducing algorithm called Adaptive Line Enhancement (ALE) [3][7] with bias model. [8] The method simultaneously reduces noises both from environment (or external noises) and from his/her voice (or internal noises) such as breathing noise, esophageal utterance noise. Incorporating a weighting coefficient bias into a conventional ALE filter, the filter has been proved empirically to perform better than the conventional one. In addition, the method can be applied without neither a laborious pre-training process nor a priori time consuming noise-power estimation.

关键词： Speech enhancement

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Behavior learning and evolution of collective autonomous mobile robots based on reinforcement learning and distributed genetic algorithms

Behavior learning and evolution of collective autonomous mob...

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IEEE International Workshop on Robot and Human Communication (ROMAN)

作者： Hyo-Byung Jun Kwee-Bo Sim Robotics and Intelligent Information System Laboratory Department of Control and Instrumentation Engineering Chung Ang University Seoul South Korea

In this paper, we present the reinforcement learning and distributed genetic algorithm based behavior learning of the distributed autonomous mobile robots. The internal reinforcement signal for the reinforcement learning is generated by fuzzy inference, and dynamic recurrent neural networks are used as action generation module. We adopt the distributed genetic algorithms for the cooperative behavior emergence. We show the validity of the proposed learning and evolution algorithm by computer simulation.

关键词： Mobile robots Learning Genetic algorithms Inference algorithms Signal generators Intelligent robots Animals Mobile communication Education Intelligent systems

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Enhancing Traffic Flow Forecasting with Spatio-Temporal Information: A Case Study on Highway Networks in Belgium 8

Enhancing Traffic Flow Forecasting with Spatio-Temporal Info...

引用

8th International Conference on instrumentation, control, and Automation, ICA 2023

作者： Fathurrahman, Muhammad Farhan Catteeuw, Arne Gautama, Sidharta Aguirre, Angel L. Joelianto, Endra Sutarto, Herman Y. Ghent University Engineering and Product Design Department of Industrial Systems Ghent Belgium Department of Intelligent System Bandung Indonesia FlandersMake@UGent-Corelab ISyE Lommel Belgium Institut Teknologi Bandung Instrumentation and Control Research Group Faculty of Industrial Technology Bandung Indonesia

ISBN: (纸本)9798350301274

As the number of vehicles continues to increase every year, it is crucial to monitor traffic conditions effectively. Traffic forecasting serves as a valuable method in traffic management to support decision making. This study investigates the impact of utilizing spatio-Temporal data for traffic flow forecasting, as opposed to forecasting each location individually. We compare spatio-Temporal Long Short-Term Memory (LSTM), a machine-learning technique that utilizes spatially correlated sensor data in a network, and compare this to conventional LSTM and Seasonal ARIMA (SARIMA). Experiments have been conducted on counting loop data of a highway network in Belgium. We have investigated the performances of the forecasting model for different prediction horizons. The results show that spatial information improves the performance of the forecasting model and reduces the training time required. Further analysis show that the spatio-Temporal LSTM improves majorities of detectors while the minorities detectors are degraded which imply the importances of network selection. The computational load of the spatio-Temporal LSTM model is minimally impacted by the number of sensors in the network thus making it scalable. The results show that longer prediction horizons degrade the forecasting performance but the impact up to a 12 hour-horizon is not significant. © 2023 IEEE.

关键词： Long short-term memory

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Remote wireless low cost RT process control using windows PLC by MATLAB/Simulink throw the REX control system

Remote wireless low cost RT process control using windows PL...

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2009 5th IEEE GCC Conference and Exhibition, GCC 2009

作者： Krejcar, Ondrej Konarik, Petr VSB-Technical University of Ostrava Faculty of Electrical Engineering and Computer Science Department of Measurement and Control Centre for Applied Cybernetics 17. listopadu 15 708 33 Ostrava-Poruba Czech Republic VSB-Technical University of Ostrava Faculty of Mechanical Engineering Department of Control System and Instrumentation 17. listopadu 15 708 33 Ostrava-Poruba Czech Republic

ISBN: (纸本)9781424438853

Paper shows direct connection and implementation way of designed control schemas of prepared applications to an industrial WinPLC. Paper deals with industrial realization of feedback control of demanding applications on their control, control algorithms and visualization together with design, implementation and real time control from MATLAB/Simulink Environment. Described is a way to produce a permanent solution in control applications that are fully prepared, designed and implemented directly from MATLAB/Simulink to the target control platform. As a part, the mentioned solution is using a multiplatform control system REX as a bridge between MATLAB and target platforms. These methods allow minimizing costs of development of control of applications, because it produces target permanent realizations in comparison to classical development methods that usually need expensive real time measurement cards and produce only one purpose development solution. As next benefit the application is created for visualization the data from RT database during the measurement and control process. This last benefit produce an interesting data from real control process to give a next reason to use of WinCon solution.

关键词： Visualization

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Sliding mode controller with nonlinear sliding surface for a second order system with input saturation

Sliding mode controller with nonlinear sliding surface for a...

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Annual Conference of Industrial Electronics Society

作者： Sohee Han Byungsun Cho Sung-Han Son Kang-Bak Park T. Tsuji Department of Control and Instrumentation Engineering Korea University South Korea Graduate School of Life Science & System Engineering Kyushu Institute of Technology Japan

In this paper, a sliding mode controller for a second order system with input saturation is proposed. The proposed method uses a nonlinear sliding surface to ensure that the control signal generated by the controller ... 详细信息

关键词： Nonlinear control systems Sliding mode control control systems Equations Signal generators Time varying systems Uncertainty Vectors Instruments systems engineering and theory

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