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Chinese Journal of Aeronautics 2023年第10期36卷 246-261页

作者： Jiashuai LIU Xi WANG Xi LIU Meiyin ZHU Xitong PEI Song ZHANG Zhihong DAN School of Energy and Power Engineering Beihang UniversityBeijing 100191China Zhongfa Aviation Institute Beihang UniversityHangzhou 311115China Research Institute of Aero-Engine Beihang UniversityBeijing 100191China Science and Technology on Altitude Simulation Laboratory AECC(Aero Engine Corporation of China)Sichuan Gas Turbine EstablishmentMianyang 621703China

Due to the dynamic coupling and multi-source uncertainties,it is difficult to accurately control the pressure and temperature of the Aeropropulsion System Test Facility(ASTF)in the presence of rapid command and large *** paper presents the design ofμ-synthesis control to solve the *** incorporating the pressure ratio into the linear equation of the control valve,the modeling error of ASTF in the low frequency range is effectively ***,an uncertain model is established by considering various factors,including parameter variations,modeling error in the low frequency range,unmodeled dynamics,and changes in the working *** address the dynamic coupling,a diagonal reference model with desired performance is incorporated intoμ-***,all weighting functions are designed according to the performance ***,theμ-controller is obtained by using the standardμ-synthesis *** results indicate that theμ-controller decouples the pressure and temperature dynamics of *** with the multivariable PI controller,integral-μcontroller,and double integral-μcontroller,the proposedμ-controller can achieve higher transient accuracy and better disturbance ***,the robustness of theμ-controller is demonstrated by Monte Carlo simulations.

关键词： Aeropropulsion System Test Facility(ASTF) Decoupling Robustness μ-synthesis Uncertainty

μ_(-synthesis)方法在结构—声耦合系统鲁棒控制中的应用

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兵工学报 2006年第1期27卷 111-115页

作者：胡如夫崔仲华李普陈南宁波工程学院交通学院浙江宁波315016 东南大学江苏南京210096

以在工程中普遍存在的封闭空间结构—声耦合系统为对象,基于鲁棒结构奇异值理论,建立了结构—声耦合系统鲁棒主动控制模型,提出了设计鲁棒-μsynthesis控制器的方法:通过引入虚拟的不确定块,将耦合系统响应性能的问题转化为广义系统的... 详细信息

以在工程中普遍存在的封闭空间结构—声耦合系统为对象,基于鲁棒结构奇异值理论,建立了结构—声耦合系统鲁棒主动控制模型,提出了设计鲁棒-μsynthesis控制器的方法:通过引入虚拟的不确定块,将耦合系统响应性能的问题转化为广义系统的稳定鲁棒性问题,采用标准D-K迭代法求解该增量系统的稳定鲁棒控制器。封闭空间结构—声耦合系统的控制仿真表明,同鲁棒H∞控制结果相比,-μsynthesis方法对模型不确定性具有良好的稳定鲁棒性和性能鲁棒性。同以往的研究相比,新意在于应用-μsynthesis方法设计了结构—声耦合系统鲁棒控制器,以克服H∞控制器的不足。

关键词：自动控制技术结构-声耦合系统 μ-synthesis 鲁棒控制有源结构声控制

基于鲁棒μ_(-synthesis)的多输入多输出振动主动控制实验

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机械强度 2008年第1期30卷 15-19页

作者：李普胡如夫尹垚东南大学机械工程学院南京210096

基于结构奇异值μ-synthesis鲁棒控制理论,建立多输入多输出结构振动响应的反馈控制模型,提出设计鲁棒μ-synthesis控制器的方法。以dSPACE为控制硬件核心,采用压电陶瓷为致动器,建立两输入两输出的薄板振动主动控制实验系统,且附加质... 详细信息

基于结构奇异值μ-synthesis鲁棒控制理论,建立多输入多输出结构振动响应的反馈控制模型,提出设计鲁棒μ-synthesis控制器的方法。以dSPACE为控制硬件核心,采用压电陶瓷为致动器,建立两输入两输出的薄板振动主动控制实验系统,且附加质量被粘贴到薄板上以测试系统鲁棒性能。实验结果表明,通过对性能加权函数和鲁棒加权函数的选取,系统能在指定频带上取得良好的减振控制效果,当薄板发生一定程度的质量摄动时,系统依然能保持稳定且仍具有较好的控制效果。

关键词：振动主动控制 μ-synthesis 鲁棒控制模型不确定性

振动系统鲁棒μ_(-synthesis)控制实验研究

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振动与冲击 2007年第4期26卷 161-164页

作者：李普胡如夫尹垚东南大学机械工程学院南京210096

基于结构奇异值μ-synthesis鲁棒控制理论,研究振动响应的主动控制问题,提出设计鲁棒μ-synthesis控制器的方法。采用dSPACE DS 1103为控制器硬件,建立以压电陶瓷为致动器的单输入单输出薄板振动主动控制实验系统,且附加质量被粘贴到薄... 详细信息

基于结构奇异值μ-synthesis鲁棒控制理论,研究振动响应的主动控制问题,提出设计鲁棒μ-synthesis控制器的方法。采用dSPACE DS 1103为控制器硬件,建立以压电陶瓷为致动器的单输入单输出薄板振动主动控制实验系统,且附加质量被粘贴到薄板上以测试系统鲁棒性能。实验结果表明,通过对性能加权函数和鲁棒加权函数的选取,系统能在指定频带上取得良好的减振控制效果,当压电板发生一定程度的质量摄动时,系统依然能保持稳定且仍具有较好的控制效果。

关键词：振动主动控制 μ-synthesis 鲁棒控制模型不确定性

Robust Controller synthesis and Analysis in Inverter-Dominant Droop-Controlled Islanded Microgrids

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IEEE/CAA Journal of Automatica Sinica 2021年第8期8卷 1401-1415页

作者： S.Mohsen Azizi School of Applied Engineering and Technology and the Department of Electrical and Computer EngineeringNew Jersey Institute of TechnologyNJ 07102 USA

This work investigates the problem of controller design for the inverters in an islanded ***-synthesis controllers and local droop controllers are designed to regulate the output voltages of inverters and share power among them,*** designed controllers alleviate the need for additional sensors to measure the states of the system by relying only on output *** is shown that the designed-synthesis controller properly damps resonant oscillations,and its performance is robust to the control-loop time delay and parameter *** stability of a droop-controlled islanded microgrid including multiple distributed generation(DG)units is analyzed by linearizing the nonlinear power flow model around the nominal operating point and applying theorems from linear *** is indicated that the droop controller stabilizes the microgrid system with dominantly inductive tie-line impedances for all values of resistive-inductive loads,while for the case of resistive-capacitive loads the stability is conditioned on an upper bound on the load *** robust performance of the designed-synthesis controller is studied analytically,compared with the similar analysis in an control(benchmark)framework,and verified by simulations for a four DG benchmark ***,the robustness of the droop controllers is analyzed by Monte Carlo simulations in the presence of local voltage fluctuations and phase differences among neighboring DGs.

关键词： Droop control inverter microgrid Monte Carlo simulation robust control μ-synthesis

Control System Design of Multi-Gimbal Electro-Optical Platform by the Technique of μ-synthesis

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Control System Design of Multi-Gimbal Electro-Optical Platfo...

Robust subsynchronous interaction damping controller for DFIG-based wind farms

第二十九届中国控制会议

作者： BAO Wenliang,HUANG Xianlin,BAN Xiaojun Center for Control Theory and Guidance Technology,Harbin Institute of Technology,Harbin 150001,P.R.China

To extend target tracking range,configuration of two-axis four-gimbal is used for high precision Electro-Optical stabilized platform,but coupling among gimbals and complexity of system are *** significant target of control system design is to improve the stabilized performance of optical sensors’*** on dynamic equations of the platform system,state space model is *** of coupling characteristic,the inner gimbal subsystem and the outer gimbal subsystem are regarded as a multi-input multi-output plant so that multivariable control is *** parameter variation considered as perturbation,which is associated with elevation channel coupling information,a controller for azimuth channel based onμ-synthesis is designed according to respective performance specification of stabilizing and angle position *** show that the system has achieved robust performance with changing of elevation working conditions,and that under the circumstances of ensuring appropriate servo precision,there is improvement in evidence about stabilizing performance comparing with system using decoupling controllers for inner gimbal subsystem and *** to multivariableμ-synthesis control method,system performance is improved effectively.

关键词： Multi-gimbal Line-of-sight Coupling Multivariable μ-synthesis

来源： cnki会议评论

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Journal of Modern Power Systems and Clean Energy 2019年第6期7卷 1663-1674页

作者： Mohsen GHAFOURI Ulas KARAAGAC Houshang KARIMI Jean MAHSEREDJIAN Department of Electrical Engineering Polytechnique MontrealMontreal H3T 1J4Canada Department of Electrical Engineering The Hong Kong Polytechnic UniversityHong KongChina

This paper proposes a robust controller to improve power system stability and mitigate subsynchronous interaction(SSI)between doubly-fed induction generator(DFIG)-based wind farms and series compensated transmission lines.A robust stability analysis is first carried out to show the impact of uncertainties on the SSI *** uncertainties are mainly due to the changes in the power system impedance(e.g.,transmission line outages)and the variations of wind farm operating ***,using theμ-synthesis technique,a robust SSI damping controller is designed and augmented to the DFIG control system to effectively damp the SSI *** output signals of the supplementary controller are dynamically limited to avoid saturating the converters and to provide DFIG with the desired fault-ride-through(FRT)operation during power system *** proposed controller is designed for a realistic test system with multiple series capacitor compensated *** frequency of the unstable SSI mode varies over a wide range due to the changes in power system topologies and wind farm operating *** performance of the proposed controller is verified through electromagnetic transient(EMT)simulations using a detailed wind farm *** results also confirm the grid compliant operation of the DFIG.

关键词： Doubly-fed induction generator(DFIG) Subsynchronous interaction(SSI) μ-synthesis Robust control Series capacitor compensation

Double-loop robust tracking control for micro machine tools

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Science China(Technological Sciences) 2011年第11期54卷 3054-3063页

作者： FAN ShiXun NAGAMUNE Ryozo FAN DaPeng College of Mechatronic Engineering and Automation National University of Defense Technology Changsha 410073 China Department of Mechanical Engineering the University of British Columbia Vancouver BC V6TIZ4 Canada

This paper addresses double-loop robust tracking controller design of the miniaturized linear motor drive precision stage with mass and damping ratio uncertainties. As an inner-loop, a disturbance observer （DOB） is employed to suppress exogenous low frequency disturbances such as friction and cutting force. To further eliminate the residual disturbance and to guarantee the robust tracking to the reference input, μ-synthesis outer-loop controller is designed. For eliminating the steady state error, a technique is proposed to design the μ-synthesis outer-loop controller with an integrator. A guideline to select the bandwidth of the Q-filter in the DOB is provided. Simulations using a model of a prototype micro-milling machine indicate that the proposed outer-loop synthesis scheme is superior to the H∞ suboptimal control in disturbance rejection performance and steady state tracking performance. Furthermore, it is shown experimentally that the proposed double-loop robust tracking controller improves the tracking performance of the stage by 29.6% over PID control with a DOB inner-loop.

关键词： micro machine tools robust tracking μ-synthesis disturbance observer

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结构振动噪声的鲁棒结构奇异值控制研究

控制工程 2006年第S2期13卷 78-81,102页

作者：丁学恭杭州技术学院机电工程系浙江杭州310018

以工程中普遍存在的封闭空间结构-声耦合系统为对象,基于鲁棒结构奇异值理论,建立了结构-声耦合系统鲁棒主动控制模型,提出了设计鲁棒μ-synthesis控制器的方法。通过引入虚拟的不确定块,将耦合系统响应性能的问题转化为广义系统的稳定... 详细信息

以工程中普遍存在的封闭空间结构-声耦合系统为对象,基于鲁棒结构奇异值理论,建立了结构-声耦合系统鲁棒主动控制模型,提出了设计鲁棒μ-synthesis控制器的方法。通过引入虚拟的不确定块,将耦合系统响应性能的问题转化为广义系统的稳定鲁棒性问题求解,兼顾了系统的稳定鲁棒性和性能鲁棒性。封闭空间结构-声耦合系统的控制仿真表明,与鲁棒H_∞控制结果相比,μ-synthesis方法对模型不确定性具有良好的稳定鲁棒性和性能鲁棒性。

关键词：鲁棒控制 μ-synthesis 结构-声耦合系统

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基于模型不确定性鲁棒结构奇异值控制研究

机械制造与自动化 2006年第3期35卷 153-156页

作者：丁学恭杭州技术学院浙江杭州310018

基于鲁棒结构奇异值理论,以工程中普遍存在的封闭空间结构———声耦合模型不确定性系统为对象,提出了设计鲁棒控制器的方法,建立了结构-声耦合系统鲁棒主动控制模型,与鲁棒H∞控制结果相比,μ-synthesis方法对模型不确定性具有良好的... 详细信息

基于鲁棒结构奇异值理论,以工程中普遍存在的封闭空间结构———声耦合模型不确定性系统为对象,提出了设计鲁棒控制器的方法,建立了结构-声耦合系统鲁棒主动控制模型,与鲁棒H∞控制结果相比,μ-synthesis方法对模型不确定性具有良好的稳定鲁棒性和性能鲁棒性。

关键词：模型不确定性 μ-synthesis 鲁棒控制