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IEEE/CAA Journal of Automatica Sinica 2016年第4期3卷 345-348页

作者： Fei-Yue Wang Xiao Wang Lingxi Li Li Li IEEE State Key Laboratory of Management and Control for Complex Systems (SKL-MCCS) Institute of AutomationChinese Academy of Sciences (CASIA) Research Center of Computational Experiments and Parallel Systems the National University of Defense Technology Qingdao Academy of Intelligent Industries (QAII) QingdaoShandongChinaand SKL-MCCSCASIA Department of Electrical and Computer Engineering Purdue School of Engineering and TechnologyIndiana University-Purdue University Indianapolis Department of Automation Tsinghua University Jiangsu Province Collaborative Innovation Center of Modern Urban Traffic Technologies

The origin of artificial intelligence is investigated, based on which the concepts of hybrid intelligence and parallel intelligence are presented. The paradigm shift in Intelligence indicates the ''new normal'' of cyber-social-physical systems (CPSS), in which the system behaviors are guided by Merton's Laws. Thus, the ACP-based parallel intelligence consisting of Artificial societies, Computational experiments and Parallel execution are introduced to bridge the big modeling gap in CPSS. © 2014 Chinese Association of automation.

关键词： control systems electrical engineering

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Bearing Fault Diagnosis Based On Ultrasensitive Vibrational Resonance

Bearing Fault Diagnosis Based On Ultrasensitive Vibrational ...

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The 29th International Congress on Condition Monitoring and Diagnostic engineering Management

作者： Yongbin Liu Zhijia Dai Siliang Lu Fang Liu GuihuaLi Jiwen Zhao College of Electrical Engineering and Automation Anhui University National Engineering Laboratory of Energy-Saving Motor & Control Technology Anhui University

In this paper,a novel weak signal detection method based on ultrasensitive vibrational resonance is proposed to detect the fault characteristic frequency of the defected *** selecting the proper parameters,the low-frequency weak periodic signal,the high-frequency periodic one,and the potential can be matched with each other to a maximum,and consequently the periodicity of the weak signal will be *** analysis has been performed to verify the effectiveness of the proposed method.

关键词： Bearing fault diagnosis ultrasensitive vibrational resonance signal filtering weak signal detection damping factor

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New stability results for switched discrete-time systems with application to consensus problems 55

New stability results for switched discrete-time systems wit...

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55th IEEE Conference on Decision and control, CDC 2016

作者： Lee, Ti-Chung Xia, Weiguo Su, Youfeng Huang, Jie Department of Electrical Engineering Minghsin University of Science and Technology Hsin-Hsing Road Hsin-Fong Hsinchu304 Taiwan School of Control Science and Engineering Dalian University of Technology Dalian China College of Mathematics and Computer Science Fuzhou University Fuzhou China Department of Mechanical and Automation Engineering Chinese University of Hong Kong Hong Kong

ISBN: (纸本)9781509018376

This paper investigates the asymptotic stability of a class of switched linear time-invariant discrete-time systems. Without the restriction of switching signals, a novel result is first proposed to guarantee uniform global asymptotic stability. Then, it is applied to studying some consensus problems of linear multi-agent systems under switching network topology. The proposed result modifies some insufficient condition assumed in a related paper and establishes the exponentially fast convergence rate of the multi-agent system. An interesting example illustrates the effectiveness of the derived results. © 2016 IEEE.

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A Data Driven Method for Quantitative Fault Diagnosability Evaluation

A Data Driven Method for Quantitative Fault Diagnosability E...

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第28届中国控制与决策会议

作者： Yongzhao Hua Qingdong Li Zhang Ren Chengrui Liu School of Automation Science and Electrical Engineering Science and Technology on Aircraft Control LaboratoryBeihang University Beijing Institute of Control Engineering Science and Technology on Space Intelligent Control Laboratory

ISBN: (纸本)9781467397155

Knowledge of achievable diagnosability performance can provide theoretical guidance for developing diagnostic algorithms and optimizing sensor placement.A data driven approach for fault diagnosability quantitative evaluation without designing any diagnosis algorithm is *** diagnosability is converted to similarity measure of output information which is denoted by fuzzy sets under different fault states.A quantitative evaluation measure and a specific diagnosability evaluation process are ***,an example is presented to demonstrate the effectiveness of the proposed methodology.

关键词： Fault diagnosability Data driven Fuzzy sets Similarity measure Quantitative evaluation

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Multiple Set-points Tracking control Based on Online ADP

Multiple Set-points Tracking Control Based on Online ADP

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第28届中国控制与决策会议

作者： Kang Wang Xiaoli Li School of Automation and Electrical Engineering University of Science and Technology Beijing College of Electronic Information and Control Engineering Beijing University of Technology

ISBN: (纸本)9781467397155

Adaptive dynamic programming(ADP) can realize the regulation and tracking control of nonlinear discretetime system in an optimal ***,how to improve transient response of ADP control is still an open *** paper proposes a multiple set-points tracking control method based on online ADP for nonlinear discrete-time system with control *** introducing a nonquadratic function,an online ADP control strategy is proposed to solve the optimal tracking problem with input *** set points are set between initial state and the reference trajectory,the controller tracks multiple set points one by one,and finally realizes the tracking of the reference *** this method,system overshoot and transient response are significantly ***,system convergence is demonstrated by Lyapunov *** last,a numerical example is constructed to show the effectiveness of the proposed method.

关键词： Optimal tracking problem Online ADP Multiple set points Transient response

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Optimal power management for failure mode of MVDC microgrids in all-electric ships

arXiv

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arXiv 2017年

作者： Xu, Qimin Yang, Bo Han, Qiaoni Yuan, Yazhou Chen, Cailian Guan, Xinping Department of Automation Shanghai Jiao Tong University Shanghai200240 China Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration Shanghai200240 China Key Laboratory of System Control and Information Processing Ministry of Education of China Shanghai200240 China Institute of Electrical Engineering Yanshan University Qinhuangdao066004 China

Optimal power management of shipboard power system for failure mode (OPMSF) is a significant and challenging problem considering the safety of system and person. Many existing works focused on the transient-time recovery without consideration of the operating cost and the voyage plan. In this paper, the OPMSF problem is formulated considering the mid-time scheduling and the faults at bus and generator. Two-side adjustment methods including the load shedding and the reconfiguration are coordinated for reducing the fault effects. To address the formulated non-convex problem, the travel equality constraint and fractional energy efficiency operation indicator (EEOI) limitation are transformed into the convex forms. Then, considering the infeasibility scenario affected by faults, a further relaxation is adopted to formulate a new problem with feasibility guaranteed. Furthermore, a sufficient condition is derived to ensure that the new problem has the same optimal solution as the original one. Because of the mixed-integer nonlinear feature, an optimal management algorithm based on Benders decomposition (BD) is developed to solve the new one. Due to the slow convergence caused by the time-coupled constraints, a low-complexity near-optimal algorithm based on BD (LNBD) is proposed. The results verify the effectivity of the proposed methods and algorithms. Copyright © 2017, The Authors. All rights reserved.

关键词： Relaxation processes

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End-to-end throughput maximization for underlay multi-hop cognitive radio networks with rf energy harvesting

arXiv

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arXiv 2017年

作者： Xu, Chi Zheng, Meng Liang, Wei Yu, Haibin Liang, Ying-Chang State Key Laboratory of Robotics Key Laboratory of Networked Control Systems Shenyang Institute of Automation Chinese Academy of Sciences Shenyang110016 China University of Chinese Academy of Sciences Beijing100049 China State Key Laboratory of Robotics Key Laboratory of Networked Control Systems Shenyang Institute of Automation Chinese Academy of Sciences Shenyang110016 China School of Electrical and Information Engineering University of Sydney NSW2006 Australia University of Electronic Science and Technology of China Chengdu611731 China

This paper studies a green paradigm for the underlay coexistence of primary users (PUs) and secondary users (SUs) in energy harvesting cognitive radio networks (EH-CRNs), wherein battery-free SUs capture both the spectrum and the energy of PUs to enhance spectrum efficiency and green energy utilization. To lower the transmit powers of SUs, we employ multi-hop transmission with time division multiple access, by which SUs first harvest energy from the RF signals of PUs and then transmit data in the allocated time concurrently with PUs, all in the licensed spectrum. In this way, the available transmit energy of each SU mainly depends on the harvested energy before the turn to transmit, namely energy causality. Meanwhile, the transmit powers of SUs must be strictly controlled to protect PUs from harmful interference. Thus, subject to the energy causality constraint and the interference power constraint, we study the end-to-end throughput maximization problem for optimal time and power allocation. To solve this nonconvex problem, we first equivalently transform it into a convex optimization problem and then propose the joint optimal time and power allocation (JOTPA) algorithm that iteratively solves a series of feasibility problems until convergence. Extensive simulations evaluate the performance of EH-CRNs with JOTPA in three typical deployment scenarios and validate the superiority of JOTPA by making comparisons with two other resource allocation algorithms. Copyright © 2017, The Authors. All rights reserved.

关键词： Cognitive radio

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Parafoil trajectory tracking control based on interval type-2 fuzzy active disturbance rejection control

Parafoil trajectory tracking control based on interval type-...

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Chinese control Conference (CCC)

作者： Yongxin Li Kuansheng Zou Yunxi Zhang College of Computer and Control Engineering Nankai University Tianjin Tianjin CN School of Electrical Engineering and Automation Jiangsu Normal University Xuzhou China School of Automation and Electrical Engineering Tianjin University of Technology and Education Tianjin Tianjin CN

It was a key technology in a disaster or an emergency situation, that the rescue material was air-dropped to a set point exactly with parafoil, the trajectory tracking is the primary issue of the air-dropped control. With this background, a parafoil trajectory tracking control method was proposed by using the fuzzy Active Disturbance Rejection control (ADRC) based on the interval type-2 fuzzy logic, which was according to the parafoil dynamical model with six degrees-of-freedom and combined with the cross track error. The inputs of the fuzzy ADRC controller were the cross track error and the variation of the error. The outputs were the control parameters of the ADRC system. The control parameters of the ADRC can be adaptively selected based on our presented method: it greatly reduced the complexity of the control parameters adjusting. Several experiments verified that the tracking performance of the proposed method is better than that of the ADRC.

关键词： Decision support systems

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A Novel Proportional Pressure Valve Based on Depressurization Using Hydraulic Half-bridge

A Novel Proportional Pressure Valve Based on Depressurizatio...

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2016 IEEE Chinese Guidance, Navigation and control Conference (IEEE CGNCC2016)

作者： Xiaochao Liu Yaoxing Shang Zongxia Jiao Science and Technology on Aircraft Control Laboratory School of Automation Science and Electrical EngineeringBeihang University IEEE

ISBN: (纸本)9781467383196

Traditional electro-hydraulic proportional valve has begun to gradually replace the traditional servo valve with the development of electronic ***,the traditional proportional valve has the common disadvantages that they all have the very large weight and volume,and this may lead to the limit of its *** paper proposed a novel proportional valve based on depressurization using hydraulic half-bridge,which has smaller weight and volume than traditional proportional *** paper gives the basic principle of the novel valve,and a detailed mathematical model is ***,the software simulation is conducted to prove the validity and feasibility of the novel *** frequency characteristics of the valve under different parameters are analyzed and some instructional advice on the design of the novel valve is given in this ***,a physical prototype is designed and some experiments are conducted to prove the principle of the novel ***,we got a conclusion in the last part of the paper.

关键词： red A Novel Proportional Pressure Valve Based on Depressurization Using Hydraulic Half-bridge

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Adaptive Error Correction for Discrete-Time Systems with Amplitude and Rate Saturation

Adaptive Error Correction for Discrete-Time Systems with Amp...

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第28届中国控制与决策会议

作者： Shicong Dai Zhang Ren Dennis S.Bernstein School of Automation Science and Electrical Engineering Science and Technology on Aircraft Control LaboratoryBeihang University Department of Aerospace Engineering University of Michigan

ISBN: (纸本)9781467397155

We present an add-on scheme for multi-input,multi-output systems with a nominal controller in order to avoid problems caused by amplitude and rate saturation such as integrator windup and phase *** modelling information is needed except the number of input and *** adaptive error correction estimates the effect of control saturation on the command following error and directly modify the command following error that is input to the nominal controller in order to prevent further saturation.A retrospective cost optimization algorithm is applied to obtain the correction on-line based on measurements of the command following error and the amount of control *** from anti-windup scheme,which compensates the control command to enlarge the convergence region,this scheme intends to adaptively contain the error inside the convergence region provided by the nominal *** examples show that,together with fixed-gain proportional-integral type controller,the adaptive error correction scheme can prevent integrator windup and phase lag for asymptotically stable plant and critically stable plant in the presence of amplitude and rate saturation.

关键词： Adaptive control Saturation Input Constrain Discrete-Time Retrospective Cost Optimization

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