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2011 IEEE 9th International Conference on Power Electronics and Drive systems, PEDS 2011

作者： Savaghebi, Mehdi Guerrero, Josep M. Jalilian, Alireza Vasquez, Juan C. Lee, Tzung-Lin Center of Excellence for Power System Automation and Operation Iran University of Science and Technology Iran Department of Automatic Control and Industrial Informatics Technical University of Catalonia Spain Institute of Energy Technology Aalborg University Denmark Department of Electrical Engineering National Sun Yat-sen University Taiwan

ISBN: (纸本)9781612849997

In this paper, a microgrid hierarchical control scheme is proposed which includes primary and secondary control levels. The primary level comprises distributed generators (DGs) local controllers. The local controller mainly consists of active and reactive power controllers, voltage and current controllers, and virtual impedance loop. A novel virtual impedance structure is proposed to achieve proper sharing of non-fundamental power among the microgrid DGs. The secondary level is designed to manage compensation of voltage harmonics at the microgrid load bus (LB) to which the sensitive loads may be connected. Also, restoration of LB voltage amplitude and microgrid frequency to the rated values is directed by the secondary level. These functions are achieved by sending proper control signals to the local controllers. The simulation results show the effectiveness of the proposed control scheme. © 2011 IEEE.

关键词： controllers

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Hand Movement Compensation for Patients with Parkinson's Disease Based on Polar Coordination system with Varied Origin

Hand Movement Compensation for Patients with Parkinson's Dis...

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2011 4th International Conference on Biomedical engineering and Informatics(第四届生物医学工程与信息学国际会议 BMEI 2011)

作者： Junzhong Zou Min Wang Bei Wang Jian Zhang Masatoshi Nakamura Department of Automation School of Information Science and Engineering East China University of Sci Department of Advanced System Control Engineering Saga University Saga 840-8502 Japan

Parkinson's disease (PD) is a common movement disorder caused from the neurological dysfunction in basal ganglia. Patients with Parkinson's disease have serious movement problems, such as movement disorders, tremor and rigidity. In this study, a new technique of hand movement compensation for patients with Parkinson's disease based on spiral drawing tasks was proposed. In order to extract the hand movement feature of patients with Parkinson's disease, the polar coordination system with varied origin was used to gain characteristic parameters more accurately. The compensation model was constructed by using the parameters obtained in spiral drawing tasks, and we also do simulation under this model to verify the effectiveness. The simulation results proved that the proposed compensation technique will be effective for assisting the movement of patients with Parkinson's disease.

关键词： Parkinson's disease Polar coordinate system with varied origin Spiral drawing task Hand motion control model Hand movement compensation

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Effectiveness Research of Deep Brain Stimulation Operation for Patients with Parkinson's Disease Based on Polar Coordination system with Varied Origin

Effectiveness Research of Deep Brain Stimulation Operation f...

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2011 4th International Conference on Biomedical engineering and Informatics(第四届生物医学工程与信息学国际会议 BMEI 2011)

作者： Junzhong Zou Bei Wang Jian Zhang Min Wang Masatoshi Nakamura Department of Automation School of Information Science and Engineering East China University of Sci Department of Advanced System Control Engineering Saga University Saga 840-8502 Japan

Parkinson's disease (PD) is a common disease of central nervous system among the elderly, and its complex symptoms bring up some difficulties for the clinical diagnosis. And Deep Brain Stimulation (DBS) is an effective treatment method for patients with Parkinson's disease. In this study, a method based on polar coordination system with varied origin was proposed to quantitatively evaluate the availability of DBS operation for patients with Parkinson's disease. Totally, seven patients with Parkinson's disease were participated in the spiral drawing experiment and their scores under Unified Parkinson's disease Rating Scale (UPDRS) were also recorded. According to the characteristics of hand movement in spiral drawing, a set of parameters were defined and calculated before and after DBS operation. Compared with the UPDRS scores, experimental results showed that this method of evaluation was consistent with the clinical diagnosis. The proposed method based on polar coordinate system with varied origin is effective in clinical diagnosis, and it provides a basis for quantitative evaluating the effectiveness of surgery and treatment.

关键词： Parkinson's disease Polar coordinate system with varied origin Deep brain stimulation operation Unified Parkinson's Disease Rating Scale Quantitative effectiveness evaluation

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Voltage harmonic compensation of a microgrid operating in islanded and grid-connected modes

Voltage harmonic compensation of a microgrid operating in is...

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作者： Savaghebi, Mehdi Jalilian, Alireza Vasquez, Juan C. Guerrero, Josep M. Lee, Tzung-Lin Center of Excellence for Power System Automation and Operation Iran Univ. of Science and Technology Iran Department of Automatic Control and Industrial Informatics Technical University Catalonia Spain Department of Energy Technology Aalborg University Denmark Department of Electrical Engineering National Sun Yat-sen University Taiwan

ISBN: (纸本)9789644634284

In this paper, a method for voltage harmonic compensation in a microgrid operating in islanded and grid-connected modes is presented. Harmonic compensation is done through proper control of distributed generators (DGs) interface converters. In order to achieve proper sharing of the compensation effort among the DGs, a power named Harmonic Distortion Power (HDP) is defined. In the proposed method, the active and reactive power control loops are considered to control the powers injected by the DGs. Also, a virtual impedance loop and voltage and current proportional-resonant controllers are included. Simulation results show the effectiveness of the proposed method for compensation of voltage harmonics to an acceptable level. © 2011 AmirKabir Univ of Tech.

关键词： Distributed power generation

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Topological vulnerability of Chinese high speed rail network

Topological vulnerability of Chinese high speed rail network

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作者： Zhang, Jianhua Cai, Yunze Xu, Xiaoming Hong, Liu Wang, Shuliang Department of Control Science and Engineering Huazhong University of Science and Technology Wuhan 430074 China Department of Automation Shanghai Jiao Tong University Shanghai 200240 China University of Shanghai for Science and Technology Shanghai 200093 China Shanghai Academy of System Science Shanghai 200093 China

ISBN: (纸本)9789881725592

Chinese high speed rail network has been given more and more attentions recent years, and it is adopted to improve the whole developments of society. Medium-short term planning of Chinese high speed rail network is given and the topological structure of Chinese high-speed rail network is discussed to investigate the reliability of network based on complex network theory and graph theory. Several parameters are presented to assess the topological characteristics of Chinese high speed rail network, and the reliability and robustness of the network subject to attacks can be evaluated. The parameter called unit degree betwweenness is firstly proposed to assess the transportation capacity of lines connecting with the nodes. Two attack protocols, the largest degree node-based attacks and the highest betweenness node-based attacks, are involved into Chinese high speed rail network to assess the topological reliability and robustness, and the results show that the highest betweenness node-based attacks can cause more damages to the network than the largest degree node-based attacks. Structural interventions are adopted to improve the global connectivity and enhance the reliability and robustness of Chinese high speed rail network, and they are proved to be effective by simulations. © 2011 Chinese Assoc of Automati.

关键词： Graph theory

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Quantitative evaluation of hand movement in spiral drawing for patients with Parkinson's disease based on modeling in polar coordinate system with varied origin

Quantitative evaluation of hand movement in spiral drawing f...

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IEEE/ICME International Conference on Complex Medical engineering, CME

作者： Min Wang Bei Wang Junzhong Zou Jian Zhang Masatoshi Nakamura Department of Automation School of Information Science and Engineering East China University of Science and Technology Shanghai China Department of Advanced System Control Engineering Saga University Saga Japan

Parkinson's disease is one of the most common neurodegenerative disorders, and its complex symptoms bring some difficulties for the clinical diagnosis. In this study, a method based on mathematical modeling of hand movement in spiral drawing was proposed to quantitatively evaluate the performance of patients with Parkinson's disease. Unlike the previous works, the hand movement data in spiral drawing were analyzed and modeled under the polar coordinate system with varied origin. Experimental results gained from the model showed that this method of evaluation was consistent with the clinical diagnosis before and after deep brain stimulation operation. The proposed method based on mathematical modeling in polar coordinate system with varied origin is effective in clinical diagnosis, and it provides a basis for quantitative evaluating the effectiveness of surgery and treatment.

关键词： Analytical models Mathematical model Indexes Hospitals

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Resource management using dynamical load prediction and multiprocessor cooperation

Resource management using dynamical load prediction and mult...

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作者： Guo, Xiuyan Zhang, Wu Wang, Jinlin Wu, Gang Joint Lab. of Network Communication System and Control Department of Automation University of Science and Technology of China Hefei Anhui 230027 China National Network New Media Engineering Research Center Institute of Acoustics Chinese Academy of Sciences Beijing 100190 China

ISBN: (纸本)9788988678367

Resource management is a complicated problem in multiprocessor system. When tasks with real-time characteristic are scheduled on processor resource constraints such as CPU and memory have to be met, however, it is usually difficult for a system to ensure load balancing and resource constraints simultaneity. In order to handle this problem lots of algorithms have been brought forward. In this paper, a load balancing policy is proposed to manage and integrate processing resource of multiprocessor system which is used to send packets of packets flows on time. The policy dynamically predicts the wait time before a packet to be processed based on the load of the processor and the timestamp of the packet, and decides the migration of packet between processors to guarantee that the packets can be processed before deadline. This policy can not only increase the multiprocessor utilization but also enhance the capacity of the system against the jitter of load by packets migration between the processors as well. We use simulation experiment to show that the policy can reduce the possibility of packets delay and increase the concurrency of flows that the system can serve.1 © 2011 AICIT.

关键词： Resource allocation

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SPC and Kalman filter-based fault detection and diagnosis for an air-cooled chiller

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Frontiers of Electrical and Electronic engineering in China 2011年第3期6卷 412-423页

作者： Biao SUN Peter B.LUH Zheng O’NEILL Center for Intelligent and Networked Systems Department of AutomationTsinghua UniversityBeijing 100084China The Tsinghua-UTC Research Institute for Integrated Building Energy Safety and Control SystemTsinghua UniversityBeijing 100084China Department of Electrical and Computer Engineering University of ConnecticutStorrsCT 06269USA United Technology Research Center United Technologies CorporationHartfordCT 06108USA

Buildings worldwide account for nearly 40%of global energy *** biggest energy consumer in buildings is the heating,ventilation and air conditioning(HVAC)*** HVAC systems,chillers account for a major portion of the energy *** chillers in good conditions through early fault detection and diagnosis is thus a critical *** this paper,the fault detection and diagnosis for an air-cooled chiller with air coming from outside in variable flow rates is *** problem is difficult since the air-cooled chiller is operating under major uncertainties including the cooling load,and the air temperature and flow rate.A potential method to overcome the difficulty caused by the uncertainties is to perform fault detection and diagnosis based on a gray-box model with parameters regarded as *** method is developed and verified by us in another paper for a water-cooled chiller with the uncertainty of cooling *** verification used a Kalman filter to predict parameters of a gray-box model and statistical process control(SPC)for measuring and analyzing their variations for fault detection and *** gray-box model in the method,however,requires that the air temperature and flow rate be nearly *** introducing two new parameters and deleting data points with low air flow rate,the requirement can be satisfied and the method can then be applicable for an air-cooled *** simulation results show that the method with the revised model and some data points dropped improved the fault detection and diagnosis(FDD)performance *** can detect both sudden and gradual air-cooled chiller capacity degradation and sensor faults as well as their recoveries.

关键词： air-cooled chiller fault detection and diagnosis(FDD) statistical process control(SPC) Kalman filter

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Identification of Hammerstein-Wiener ARMAX systems Using Extended Kalman Filter

Identification of Hammerstein-Wiener ARMAX Systems Using Ext...

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2011 Chinese control and Decision Conference（CCDC）

作者： M.Mansouri H.Tolouei M.Aliyari Shoorehdeli Intelligent System Laboratory (ISLAB) faculty of Electrical EngineeringControl departmentK.N.Toosi University of Technology Advanced Process Automation & Control Laboratory (APAC) faculty of Electrical EngineeringControl departmentK.N.Toosi University of Technology Advanced Process Automation & Control Laboratory (APAC) faculty of Electrical EngineeringMechatronics departmentK.N.Toosi University of Technology

In this study,Extended Kalman Filter (EKF) algorithm is developed to estimate the parameters of Hammerstein-Wiener (H-W) ARMAX *** basic idea is to estimate the original parameters of the identification model,which are appeared in the form of product terms,***,other algorithms like Extended Forgetting Factor Stochastic Gradient (EFG),Extended Stochastic Gradient (ESG),Forgetting Factor Recursive Least Square (FFRLS) and Kalman Filter (KF),estimate parameters in the product form and they need another algorithms such averaging method (AVE method),singular value decomposition method (SVD method) to separate the ***,the computational complexity of the proposed approach *** show the efficiency of this method the results are compared with EFG and ESG method.

关键词： Hammerstein-Wiener model,Extended Kalman Filter algorithm,Extended Stochastic Gradient algorithm,Extended Forgetting Factor Stochastic Gradient algorithm

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Dynamic anti-windup design in anticipation of actuator saturation

Dynamic anti-windup design in anticipation of actuator satur...

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作者： Wu, Xiongjun Lin, Zongli Department of Automation Shanghai Jiao Tong University Key Laboratory of System Control and Information Processing of Ministry of Education Shanghai 200240 China Charles L. Brown Department of Electrical and Computer Engineering University of Virginia P.O. Box 400743 Charlottesville VA 22904-4743 United States

ISBN: (纸本)9781457700804

In a traditional anti-windup design, the anti-windup mechanism is set to be activated as soon as the control signal saturates the actuator. A recent innovation of delaying the activation of the anti-windup mechanism, both static and dynamic, until the saturation reaches to a certain level of severity has led to a performance improvement of the resulting closed-loop system. More recently, it has been shown that significant further performance improvements can be obtained by activating a static anti-windup mechanism in anticipation of actuator saturation, in comparison with the delayed activation design. This paper demonstrates that anticipatory activation of a dynamic anti-windup mechanism would also lead to significant performance improvements over both the immediate and delayed activation schemes. © 2011 AACC American Automatic control Council.

关键词： Chemical activation

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