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2011 International Conference on Advanced Power System Automation and Protection, APAP 2011

作者： Yin, Diqing Liu, Kun Dong, Xinzhou Shi, Shenxing Xu, Gang Wang, Kai North City Branch of Shanghai Power Company Shanghai 200072 China Status Key Lab. of Control and Simulation of Power Systems and Generation Equipments Dept. of Electrical Engineering Tsinghua University Haidian District Beijing 100084 China

ISBN: (纸本)9781424496198

Distribution line non-communication protection (DNCP) can quickly and selectively isolate unsymmetrical fault, but the performance of this distribution line automation system is not satisfying in the case of symmetrical fault. This paper proposes a scheme which can quickly isolate symmetrical fault and block the operation of BPS: DNCP which is closed to the source can operate instantaneously, that can avoid overheating damage of electrical equipment;when the magnitude of voltage falls, BPS will detect the magnitude of negtive voltage two cycles ago to make a decision, that can avoid the process of connecting to permanent fault and tripping again for the ring main unit. EMTP simulation results show the effectiveness of the scheme. © 2011 IEEE.

关键词： Automation

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Stabilization of the Schmid Pendulum on the Movable Platform with Real-Time controller Adjustment and Adaptive Friction Compensation

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IFAC Proceedings Volumes 2011年第1期44卷 4137-4142页

作者： Alexey A. Bobtsov Sergey A. Kolyubin Anton A. Pyrkin Department of Control Systems and Informatics Saint Petersburg State University of Information Technologies Mechanics and Optics Saint Petersburg RUSSIA Control of Complex Systems Lab. Institute of Problems of Mechanical Engineering RAS Saint Petersburg RUSSIA

Abstract In this paper presents adaptive hybrid control algorithm for the underactuated system, called Schmid pendulum. Static pendulum support was replaced by the wheeled platform to demonstrate advantages of proposed approach. The control task is output stabilization of the pendulum upright equilibrium in an uncertain plant parameters, limited control and unknown friction presence. In contrast to known approaches, real-time controller adjustment without any preliminary identification procedures has been provided. Obtained algorithm has been successfully verified via experimental implementation on the real mechatronic setup.

关键词： Adaptive control identification hybrid system stabilization friction compensation mechatronic systems

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Research of protection communication system in process level of intelligent substation

Research of protection communication system in process level...

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2011 International Conference on Advanced Power System Automation and Protection, APAP 2011

作者： Xu, Fei Wang, Bin Dong, Xinzhou Cao, Runbin Liu, Kun Yang, Yuelin Wu, Tingting State Key Lab. of Control and Simulation of Power Systems and Generation Equipments Dept. of Electrical Engineering Tsinghua University Beijing 100084 China College of Information and Electrical Engineering China Agricultural University China School of Electrical Engineering and Renewable Energy China Three Gorges University Yichang 443000 China

ISBN: (纸本)9781424496198

The paper mainly focuses on the communication problem based on IEC61850 communication protocol. As in the process level communication system: MU (Merging Unit)-Switch-DIPC (Digital Integrated Protection and control system), the stability of SMV packets transmission is very important. The transmission delay of the process level communication is the key problem that may restrict the protection algorithm and capability. In the meantime, GPS synchronization problem of MUs, protection capability of the integrated protection device and stability of SMV message transmission based on the existing DIPC(DIP-01) system will also be discussed in the paper. Through the experiment and analysis, the paper gives out the key factors that lead to the message transmission delay and packets loss. The work at last gives out some primary ideas to improve the protection capability. © 2011 IEEE.

关键词： Ethernet

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A co-design distributed Bayesian approach for decision and scheduling of WNCS

A co-design distributed Bayesian approach for decision and s...

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作者： Mechraoui, A. Djohor, F. Thiriet, J.-M. Gentil, S. Department of Control Systems Engineering GIPSA-lab. University of Grenoble 38402 France Laboratoire des Sciences de L'Information et des Systèmes LSIS Domaine universitaire de Saint Jérôme 13397 Marseille France

ISBN: (纸本)9783902661937

This paper deals with the problem of co-design of Wireless Networked control systems (WNCS). The integration of the Wireless Network (WN) in the control loop influences the Quality of control (QoC) of the system in terms of the Quality of Service (QoS) of the WN. We present a co-design approach for WNCS based on distributed Bayesian Network (BN) and we illustrate it with Khepera III robot. The proposed BN is constructed from the robot experimental data. This approach allows to make decisions to ensure a good QoC for the robot and also ensure that the QoS is always sufficient to maintain a good QoC. Keeping a sufficient QoS depends on the scheduling method used and therefore the proposed approach aims also to determine the proper scheduling method to keep the system's performance. Finally a comparison is performed with the classical time-triggered scheduling. The results obtained with BN scheduling are better in terms of QoS and QoC for WNCS. © 2011 IFAC.

关键词： Bayesian networks

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A control engineering approach for designing an optimized treatment plan for fibromyalgia

A control engineering approach for designing an optimized tr...

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作者： Deshpande, Sunil Nandola, Naresh N. Rivera, Daniel E. Younger, Jarred School for Engineering of Matter Transport and Energy Arizona State University Tempe AZ United States Control Systems Engineering Laboratory Arizona State University Tempe AZ United States Stanford Systems Neuroscience and Pain Lab. Stanford University School of Medicine Palo Alto CA United States ABB Corporate Research Center Bangalore India

ISBN: (纸本)9781457700804

control engineering offers a systematic and efficient means for optimizing the effectiveness of behavioral interventions. In this paper, we present an approach to develop dynamical models and subsequently, hybrid model predictive control schemes for assigning optimal dosages of naltrexone as treatment for a chronic pain condition known as fibromyalgia. We apply system identification techniques to develop models from daily diary reports completed by participants of a naltrexone intervention trial. The dynamic model serves as the basis for applying model predictive control as a decision algorithm for automated dosage selection of naltrexone in the face of the external disturbances. The categorical/discrete nature of the dosage assignment creates a need for hybrid model predictive control (HMPC) schemes. Simulation results that include conditions of significant plant-model mismatch demonstrate the performance and applicability of hybrid predictive control for optimized adaptive interventions for fibromyalgia treatment involving naltrexone. © 2011 AACC American Automatic control Council.

关键词： Model predictive control

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Demand analysis of the information sharing among multi-bays through the process networks in intelligent distribution substation

Demand analysis of the information sharing among multi-bays ...

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2011 International Conference on Advanced Power System Automation and Protection, APAP 2011

作者： Yang, YueLin Wang, Bin Wen, BoYing Dong, XinZhou Wu, TingTing Liu, Kun College of Information and Electrical Engineering CHINA Agricultural University Beijing 100083 China State Key Lab. of Control and Simulation of Power Systems and Generation Equipments Dept. of Electrical Engineering Tsinghua University Beijing 100084 China School of Electrical Engineering and Renewable Energy China Three Gorges University Yichang 443000 China

ISBN: (纸本)9781424496198

Multi-bay information sharing has very important significances for the the enhancing of the relay characteristics and improving of the system control methods. With the summary of distribution substation busbar protection, small current grounding fault line selection, non-communication double-circuit line protection, reactive power and voltage control, low frequency load shedding control programmes, It analyse the needs of the information sharing among multiple bays and the application of integrated protection. © 2011 IEEE.

关键词： Electric grounding

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Adaptive control and system identification for direct brain control of artificial limbs

Adaptive control and system identification for direct brain ...

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作者： Aasted, Christopher M. Shoureshi, Rahmat A. Sarusi, Benjamin Intelligent Systems Lab. School of Engineering and Computer Science University of Denver Denver CO 80208 United States School of Engineering and Computer Science University of Denver Denver CO 80208 United States Electronic Development Nuclear Research Center Negev P.O.Box 9001 Beer Sheva Israel

ISBN: (纸本)9781457700804

Developing a non-invasive direct brain control of artificial limbs is both challenging and desirable. Such a sensory and control system, if successful, will have profound impact on the disabled. In this paper, we present the design of a control algorithm capable of automatic reconfiguration to account for changing sensor conditions, selection of an appropriate transfer function based on input characteristics, and adaptation to adjust output strength based on the user's activity. This algorithm is designed for use with our developed hybrid non-invasive brain monitoring technique for the purpose of artificial limb control. The development of the algorithm and its initial performance together with our sensory system are presented and discussed. © 2011 AACC American Automatic control Council.

关键词： Adaptive control systems

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Research on pilot protection applied in aircraft annular power distribution system

Research on pilot protection applied in aircraft annular pow...

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2011 International Conference on Advanced Power System Automation and Protection, APAP 2011

作者： Jiang, Zhongshan Liu, Yanping Wang, Bin Dong, Xinzhou Wang, Yan Naval Aeronautical and Astronautical University Yantai 264001 China State Key Lab. of Control and Simulation of Power Systems and Generation Equipments Dept. of Electrical Engineering Tsinghua University Haidian Beijing 100084 China Beijing Wuzi University Beijing 101149 China

ISBN: (纸本)9781424496198

In the annular power distribution system, short-circuit fault of bus-bars will do fatal harm to aircraft, and it is necessary to protect the ring-net bus-bars. Protecting bus-bars has to meet the requirements that protection devices do not refuse to operate and backup protection devices do not act incorrectly. This paper builds a model about the annular power distribution system and stimulates the fault system based on MATlab. According to the fault features, directional blocking pilot protection is put forward. The results prove that the new method can achieve automatic isolation of the bus-bar at fault, ensures the safety of aircraft power distribution system, and it is of great importance to improve the reliability of aircraft power distributing. © 2011 IEEE.

关键词： MATlab

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control of legged robots with optimal distribution of contact forces

Control of legged robots with optimal distribution of contac...

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2011 11th IEEE-RAS International Conference on Humanoid Robots, HUMANOIDS 2011

作者： Righetti, Ludovic Buchli, Jonas Mistry, Michael Schaal, Stefan Computational Learning and Motor Control Lab. University of Southern California Los Angeles CA 90089 United States Max Planck Institute for Intelligent Systems Tübingen Germany Dept. of Advanced Robotics Italian Institute of Technology Genoa Italy Disney Research Pittsburgh Pittsburgh PA 15213 United States

ISBN: (纸本)9781612848679

The development of agile and safe humanoid robots require controllers that guarantee both high tracking performance and compliance with the environment. More specifically, the control of contact interaction is of crucial importance for robots that will actively interact with their environment. Model-based controllers such as inverse dynamics or operational space control are very appealing as they offer both high tracking performance and compliance. However, while widely used for fully actuated systems such as manipulators, they are not yet standard controllers for legged robots such as humanoids. Indeed such robots are fundamentally different from manipulators as they are underactuated due to their floating-base and subject to switching contact constraints. In this paper we present an inverse dynamics controller for legged robots that use torque redundancy to create an optimal distribution of contact constraints. The resulting controller is able to minimize, given a desired motion, any quadratic cost of the contact constraints at each instant of time. In particular we show how this can be used to minimize tangential forces during locomotion, therefore significantly improving the locomotion of legged robots on difficult terrains. In addition to the theoretical result, we present simulations of a humanoid and a quadruped robot, as well as experiments on a real quadruped robot that demonstrate the advantages of the controller. © 2011 IEEE.

关键词： controllers

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Dynamic identifying and tracking framework for cutters using RFID technology in digital workshop

Dynamic identifying and tracking framework for cutters using...

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2011 International Conference on Electronic and Mechanical engineering and Information Technology, EMEIT 2011

作者： Zhou, Guanghui Xiao, Zhongdong Wang, Ben Jiang, Pingyu State Key Laboratory for Manufacturing Systems Engineering Xi'an China School of Mechanical Engineering Xi'an Jiaotong University Xi'an China School of Management Xi'an Jiaotong University Key Lab. of the Ministry of Education for Process Control and Efficiency Engineering Xi'an China High-Performance Materials Institute Florida State University Tallahassee FL United States

ISBN: (纸本)9781612840857

For effectively solving the problem of accurate tracking and control of cutters in digital workshop, this paper presents a novel RFID-based dynamic identifying and tracking framework for cutters in digital workshop (RFID-DITF-CDW). An overall architecture for RFID-DITF-CDW is established and its key enabling technologies including RFID-based realtime information collecting, dynamic misuse detecting of cutter change on CNC machines, real-time position identifying, status tracking, and service life forecasting for cutters are discussed. Finally, a prototype system of RFID-DITF-CDW is developed and applied in a real typical CNC machining workshop to demonstrate the validity of presented framework and enabling technologies. © 2011 IEEE.

关键词： Radio frequency identification (RFID)

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