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Adaptive Fuzzy Control for a Class of Nonlinear Systems with input constraint and Unknown Control Direction 25th

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Adaptive Fuzzy Control for a Class of Nonlinear Systems with...

MV-PID Controller for Linear Systems Subject to input constraint

第25届中国控制与决策会议

作者： Shi Wuxi Wang Hongquan Li Furong Wei Xiangyu School of Electrical Engineering and Automation Tianjin Polytechnic University

ISBN: (纸本)9781467355339

An indirect adaptive fuzzy control scheme is developed for a class of nonlinear systems with input constraint and unknown control direction. In this scheme, the fuzzy systems are used to proximate unknown nonlinear functions, a modified control design framework is presented for preventing the presence of input constraint from destroying the learning capabilities of the fuzzy systems, and the dynamic robustness term is used to compensate the approximation errors. The proposed design scheme guarantees that all the signals in the resulting closed-loop system are bounded, and the tracking error converges to the small neighborhood of the origin. Simulation results indicate the effectiveness of this scheme.

关键词： Nonlinear Systems Adaptive Fuzzy Control input constraint

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MV-PID Controller for Linear Systems Subject to Input Constr...

Adaptive Fuzzy Finite-Time Backstepping Control of Nonlinear Systems with input constraint and Hysteresis Nonlinearity

第36届中国控制会议

作者： Ji Weiqiang Huang Chunqing Liu Yunlong Department of Automation Xiamen University

ISBN: (纸本)9781538629185

Since PID controller is widely applied in control system and output variance is directly related to economic benefit of the real system,it has a desire for variance optimizing PID controller under input constraint in engineering ***-PID control is proposed in this paper and its tuning rule is derived *** the presence of input constraint,the proposed controller keeps the ability of step/constant disturbance rejection as general PID controller;and moreover,its variance performance is very close to that of the constrained *** example demonstrates the effectiveness of the proposed controller.

关键词： input constraint MVC MV-PID output variance disturbance rejection

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Adaptive Fuzzy Finite-Time Backstepping Control of Nonlinear...

Multivariable Decoupling Predictive Control with input constraints and Its Application on Chemical Process

第40届中国控制会议

作者： Mengmeng Li Yuan Li Qinglin Wang School of Automation Beijing Institute of Technology

This paper investigates the adaptive finite-time tracking control issue for a class of nonlinear systems with input constraint,hysteresis nonlinearity,unmeasured states,and external *** on the fuzzy logic systems（FLSs）,a fuzzy state observer（FSO） is first designed to estimate the unmeasured ***,by using the finite-time stability theory,a novel backstepping control scheme is proposed without constructing the hysteresis *** problem of "explosion of complexity" caused by the derivative of virtual controllers is eliminated by utilizing the low-pass ***,a saturation dynamic filter is employed to address the input *** is proved that the proposed controller guarantees that all the closed signals are semi-global practical finite-time stability（SGPFS）,and the tracking error converges to a neighbourhood of the ***,simulation results are presented to validate the effectiveness of the proposed control scheme.

关键词： Hysteresis input constraint Backstepping Fuzzy Logic Systems Finite Time Tracking

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Chinese Journal of Chemical Engineering 2006年第2期14卷 216-222页

作者：苏佰丽陈增强袁祉 Department of Automation Nankai University Tianjin 300071 China Department of Antomation Qufu Normal University Qufu 273165 China

A constrained decoupling (generalized predictive control) GPC algorithm is proposed for MIMO (malti-input multi-output) system. This algorithm takes account of all constraints of inputs and their increments. By solving matrix equations, the multi-step predictive decoupling controllers are realized. This algorithm need not solve Diophantine functions, and weakens the cross-coupling of the variables. At last the simulation results demon- strate the effectiveness of this proposed strategy.

关键词： chemical process control multivariable system optimization predictive control input constraint

Sliding-mode control for a rolling-missile with input constraints

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Journal of Systems Engineering and Electronics 2020年第5期31卷 1041-1050页

作者： HUA Siyu WANG Xugang ZHU Yin The 802 Institute of Shanghai Academy of Space Flight Technology Shanghai 201100China School of Energy and Power Engineering Nanjing University of Science and TechnologyNanjing 210094China

This paper investigates the overload stabilization problem of the rolling-missile subject to parameters uncertainty and actuator saturation. In order to solve this problem, a sliding-mode control(SMC) scheme is technically employed by using the backstepping approach to make the dynamic system stable. In addition,SMC with the tanh-type switching function plays an important role in reducing intrinsic vibration. Furthermore, an auxiliary system(AS) is developed to compensate for nonlinear terms arising from input saturation. Finally, the simulation results provide a solution to demonstrate that the suggested SMC and the AS methodology have advantages of strong tracking capability, anti-interference ability and anti-saturation performance.

关键词： input constraint back-stepping approach sliding-mode control(SMC) auxiliary control system

Adaptive output consensus for heterogeneous nonlinear multi-agent systems with multi-type input constraints under switching-directed topologies

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Control Theory and Technology 2021年第2期19卷 260-272页

作者： Wei Zhang Zhaoxu Yu Shugang Li Key Laboratory of Advanced Control and Optimization for Chemical Processes of Ministry of Education East China University of Science and TechnologyShanghai200237China Department of Information Management Shanghai UniversityShanghai200444China

This study concentrates on solving the output consensus problem for a class of heterogeneous uncertain nonstrict-feedback nonlinear multi-agent systems under switching-directed communication topologies,in which all followers are subjected to multi-type input constraints such as unknown asymmetric saturation,unknown dead-zone and their integration.A unified representation is presented to overcome the difficulties originating from multi-agent input ***,the uncertain system functions in a non-lower triangular form and the interaction terms among agents are dealt with by exploiting the fuzzy logic systems and their special ***,by introducing a nonlinear filter to alleviate the problem of“explosion of complexity”during the backstepping design,a distributed common adaptive control protocol is proposed to ensure that the synchronization errors converge to a small neighborhood of the origin despite the existence of multiple input constraints and arbitrary switching communication *** stability analysis and simulation results are conducted to show the effectiveness and performance of the proposed control methodology.

关键词： Nonlinear multi-agent system Output consensus Fuzzy logic system input constraint Switching topology

Multimodel-based flight control system reconfiguration control in the presence of input constraints

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控制理论与应用（英文版） 2010年第4期8卷 418-424页

作者： Yuying GUO Bin JIANG Yufei XU College of Automation Engineering Nanjing University of Aeronautics and Astronautics Nanjing Jiangsu 210016 China School of Information Engineering Southwest University of Science and Technology Mianyang Sichuan 621010 China

In this paper,an active fault accommodate strategy is proposed for the plant in the presence of actuator fault and input constraints,which is a combination of a direct adaptive control algorithm with multiple model *** μ-modification is introduced in the model reference architecture to construct the adaptive *** proof of stability is based on the candidate Lyapunov function,while appropriate switching of multiple models guarantees asymptotic tracking of the system states and the boundedness of all *** results illustrate the efficiency of the proposed method.

关键词： Actuator fault Adaptive control reconfiguration Multiple model input constraint RBF neural network

Application-Oriented Homogeneous Control Protocol Design for Multi-Agent Systems Under input constraints

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Guidance, Navigation and Control 2023年第3期3卷 89-109页

作者： Siyuan Wang Sandeep Kumar Soni Gang Zheng Driss Boutat Department of Energy Risks and Environment INSA Centre Val de LoireBourges18000France Department of Electrical Engineering Shiv Nadar Institution of Eminence Delhi NCR201314India Defrost Centre Inria de l'Universite de Lille Villeneuve-d'Ascq59650France

An application-oriented homogeneous control protocol is proposed to solve the consensus problem of multi-agent system(MAS)modeled by higher-order *** nonlinear control protocol is able to homogenize the linear system with a special degree called homogeneity *** homogeneous control protocol ensures asymptotically/finite-time stable multi-agent systems(MASs)(or fixed-time attractive to compact sets containing the origin)by selecting di®erent homogeneity *** the linear control protocol for each agent is provided,the proposed nonlinear homogeneous control protocol in this paper can be easily implemented without requiring any tuning of the control parameters.A bounded homogeneous control protocol,which is a special form of the controller proposed,is also introduced to address the same problem with input ***,numerical simulations are conducted to demonstrate the e®ectiveness of the proposed approach.

关键词： Homogeneous system multi-agent input constraint

Research on consensus of multi-agent systems with and without input saturation constraints

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Journal of Systems Engineering and Electronics 2021年第4期32卷 947-955页

作者： QI Duo HU Junhua LIANG Xiaolong ZHANG Jiaqiang ZHANG Zhihao Air Traffic Control and Navigation College Air Force Engineering UniversityXi’an 710051China Shaanxi Province Lab.of Meta-Synthesis for Electronic&Information System Xi’an 710051China Aeronautical Engineering College Air Force Engineering UniversityXi’an 710038China

In recent years,with the continuous development of multi-agent technology represented by unmanned aerial vehicle(UAV)swarm,consensus control has become a hot spot in academic *** this paper,we put forward a discrete-time consensus protocol and obtain the necessary and sufficient conditions for the second-order consensus of the second-order multi-agent system with a fixed structure under the condition of no saturation *** theoretical derivation verifies that the two eigenvalues of the Laplacian of the communication network matrix and the sampling period have an important effect on achieving *** we construct and verify sufficient conditions to achieve consensus under the condition of input saturation *** results show that consensus can be achieved if velocity,position gain,and sampling period satisfy a set of inequalities related to the eigenvalues of the Laplacian ***,the accuracy and validity of the theoretical results are proved by numerical simulations.

关键词： multi-agent system consensus control input constraint distributed control