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第35届中国控制会议

作者： HAN Huayun YANG Ying LI Linlin Chen Yu State Key Laboratory for Turbulence and Complex Systems Department of Mechanics and Engineering ScienceCollege of Engineering Peking University School of Automation and Electrical Engineering University of Science and Technology Beijing the Institute for Automatic Control and Complex Systems (AKS) University of Duisburg-Essen Beijing Institute of Astronautics System Engineering

ISBN: (纸本)9781509009107

This paper is concerned with the integrated design schemes of L observer-based fault detection（FD） systems for affine nonlinear processes with disturbances and uncertainties,*** this end,a so called L observer-based FD scheme is studied ***,the integrated design approaches for nonlinear systems with disturbances and uncertainties are addressed,*** the end,examples are given to illustrate the effectiveness of the proposed approaches.

关键词： Robust Fault Detection Observer Design Affine Nonlinear systems

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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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Sliding mode tracking control for miniature unmanned helicopters

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Chinese Journal of Aeronautics 2015年第1期28卷 277-284页

作者： Xian Bin Guo Jianchuan Zhang Yao Zhao Bo The Institute of Robotics and Autonomous System Tianjin Key Laboratory of Process Measurement and ControlSchool of Electrical Engineering and Automation Tianjin University

A sliding mode control design for a miniature unmanned helicopter is presented. The control objective is to let the helicopter track some predefined velocity and yaw trajectories. A new sliding mode control design method is developed based on a linearized dynamic model. In order to facilitate the control design, the helicopter＇s dynamic model is divided into two subsystems,such as the longitudinal-lateral and the heading-heave subsystem. The proposed controller employs sliding mode control technique to compensate for the immeasurable flapping angles＇ dynamic effects and external disturbances. The global asymptotic stability（GAS） of the closed-loop system is proved by the Lyapunov based stability analysis. Numerical simulations demonstrate that the proposed controller can achieve superior tracking performance compared with the proportionalintegral-derivative（PID） and linear-quadratic regulator（LQR） cascaded controller in the presence of wind gust disturbances.

关键词： unmanned sliding miniature compensate quadratic cascaded subsystem disturbance facilitate linearized

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Repeated Strike Process During Disconnector Operation in Ultra-High Voltage Gas-Insulated Switchgear

Repeated Strike Process During Disconnector Operation in Ult...

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作者： Guan, Yonggang Cai, Yuanji Chen, Weijiang Liu, Weidong Li, Zhibing Yue, Gongchang Zhang, Junmin State Key Lab of Control and Simulation of Power System and Generation Equipments Department of Electrical Engineering Tsinghua University Beijing100084 China State Grid Corporation of China Beijing100031 China China Electric Power Research Institute Beijing100192 China School of Automation Science and Electrical Engineering Beihang University Beijing100191 China

Very fast transient over-voltage (VFTO), induced by disconnector operations in gas-insulated switchgears, has become the limiting dielectric stress at ultra-high voltage levels. Much work has been done to investigate single-strike waveforms of VFTO. However, little study has been carried out investigating the repeated strike process, which would influence VFTO significantly. In this paper, we carried out 450 effective experiments in an ultra-high voltage test circuit, and conducted calculations through the Monte Carlo simulation method, to investigate the repeated strike process. Firstly, the mechanism of the repeated strike process is proposed, based on the experimental results. Afterwards, statistical breakdown characteristics of disconnectors are obtained and analyzed. Finally, simulations of the repeated strike process are conducted, which indicate that the dielectric strength recovery speed and polarity effect factor have a joint effect on VFTO. This study enhances the understanding of the nature of VFTO, and may help to optimize the disconnector designed to minimize VFTO.

关键词： Monte Carlo methods

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Thoughts and Analysis of Some Problems in the Hydraulic control system Design with the WBD

Thoughts and Analysis of Some Problems in the Hydraulic Cont...

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2016 IEEE/CSAA International Conference on Aircraft Utility systems(AUS)

作者： Jiang Huijun Qin Cheng Shang Yaoxing Liu Xiaochao Department of Flight Control and Hydraulic System AVIC the First Aircraft Institute School of Automation Science and Electrical Engineering Beihang University

This paper presents the system works,solution of the limited hydraulic source with the velocity inner loop,and the system optimal design method of reduction *** modeling and simplifying the system,the static and dynamic characteristics are analyzed,and the selecting requirements of affecting its parameters are proposed.A method is raised to reduce the peak pressure of the hydraulic drive unit(PDU) inlet and outlet pipes and its internal motor.

关键词： PDU Thoughts and Analysis of Some Problems in the Hydraulic control system Design with the WBD

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Design and Validation of Hydraulic Pump system Driven by the Electromotor under the High-Power and Long-Time Working state in An Airborne

Design and Validation of Hydraulic Pump System Driven by the...

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2016 IEEE/CSAA International Conference on Aircraft Utility systems(AUS)

作者： Huijun Jiang Zhenshui Li Hong Liu Zongxia Jiao Yaoxing Shang Xiaochao Liu Department of Flight Control and Hydraulic System AVIC the First Aircraft Institute School of Automation Science and Electrical Engineering Beihang University

This paper introduced a type of aircraft electric hydraulic pump system working principle,the key points of the system are analyzed and described,including calculation of boost pressure,system oil temperature control design,environmental temperature checking,starting logic design,the system validation and verification methods are *** system passed through the ground test and flight time Validation,and worked well and reliably.

关键词： boost Design and Validation of Hydraulic Pump system Driven by the Electromotor under the High-Power and Long-Time Working state in An Airborne

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Adaptive Backstepping Tracking control of a 6-DOF Unmanned Helicopter

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IEEE/CAA Journal of Automatica Sinica 2015年第1期2卷 19-24页

作者： Bin Xian Jianchuan Guo Yao Zhang the Institute of Robotics and Autonomous System Tianjin Key Laboratory of Process Measurement and Control School of Electrical Engineering and AutomationTianjin University

This paper presents an adaptive backstepping control design for a class of unmanned helicopters with parametric uncertainties. The control objective is to let the helicopter track some pre-defined position and yaw trajectories. In order to facilitate the control design, we divide the helicopter's dynamic model into three subsystems. The proposed controller combines the backstepping method with online parameter update laws to achieve the control objective. The global asymptotical stability (GAS) of the closed-loop system is proved by a Lyapunov based stability analysis. Numerical simulations demonstrate that the controller can achieve good tracking performance in the presence of parametric uncertainties. © 2014 Chinese Association of automation.

关键词： Backstepping Closed loop control systems Closed loop systems controllers Flight dynamics Helicopters

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UKF Based Filtering and Curve Fitting for Estimating the Joint Stiffness of Stewart Platform

UKF Based Filtering and Curve Fitting for Estimating the Joi...

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

作者： Xin Li Shuling Dai Rui Zeng State Key Laboratory of Virtual Reality Technology and System/Aircraft Control Integration Technology Laboratory/School of Automation Science and Electrical Engineering Beihang University

ISBN: (纸本)9781467383196

In order to improve the precision of most control method for the Stewart platform,this paper gives a novel method to determine the joint stiffness to avoid the negative effect of the actuated joint *** establish the transfer function of the linearized model between the theoretical and the real value of joint deforming length so as to estimate the joint *** the same time,in view of the special noise of the distance measuring sensor output,the unscented Kalman filter is used in signal *** experimental results show that this method can obtain the joint stiffness parameters effectively.

关键词： filter UKF Based Filtering and Curve Fitting for Estimating the Joint Stiffness of Stewart Platform Stewart

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A Virtual-Waypoint Based Artificial Potential Field Method for UAV Path Planning

A Virtual-Waypoint Based Artificial Potential Field Method f...

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

作者： Yuecheng Liu Yongjia Zhao State Key Laboratory of Virtual Reality Technology and System/Aircraft Control Integration Technology Laboratory/ School of Automation Science and Electrical Engineering Beihang University

ISBN: (纸本)9781467383196

Unmanned aerial vehicle(UAV) path planning is an important preliminary step in UAV mission *** potential field(APF) UAV path planning method is often employed to build an intuitive model which is updated by the additional forces pushing the trajectory away from threats of non-cooperative objects and toward the predefined ***,APF has its own weaknesses,one of which is the local minima close to concave *** tackle situation mentioned above,we propose a novel additional force model based on virtual *** model provides additional forces for candidate planning points falling into local minimum area and help them escape from local minimum *** the candidate is trapped in minimum area,firstly we calculate measure factor according to the planning area containing current candidate and the target point,and thus determine position of the virtual *** the virtual waypoint generates additional control force so that the candidate can run away from the local minimum ***,the simulation results show that the method can solve the local minimum problem in planning space.

关键词： UAV A Virtual-Waypoint Based Artificial Potential Field Method for UAV Path Planning Virtual

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Three-dimensional Route Planning Considering Threat Blind Area

Three-dimensional Route Planning Considering Threat Blind Ar...

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

作者： Jian Guo Xiaoyong Lei State Key Laboratory of Virtual Reality Technology and System/Aircraft Control Integration Technology Laboratory/School of Automation Science and Electrical Engineering Beihang University

ISBN: (纸本)9781467383196

The terrain defilade effect was utilized to propose a low altitude penetration 3D route planning method in consideration of blind ***,the digital elevation map and blind space model were established to obtain the terrain blind space ***,the blind space data was invocated in real-time in the planning ***,A algorithm was promoted and the planned route was smoothing *** results show that the planned route can achieve terrain avoidance and threat avoidance by using blind space ***,the smoothing process algorithm has obtained good smoothing effects.

关键词： Three-dimensional Route Planning Considering Threat Blind Area

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