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Output-feedback Dynamic Surface Control for a Class of nonlinear non-minimum phase systems

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IEEE/CAA Journal of Automatica Sinica 2016年第1期3卷 96-104页

作者： Shanwei Su Research Institute of Unmanned Aerial Vehicle Beihang University

In this paper, an output-feedback tracking controller is proposed for a class of nonlinear non-minimum phase *** keep the unstable internal dynamics bounded, the method of output redefinition is applied to let the stability of the internal dynamics depend on that of redefined output, thus we only need to consider the new external dynamics rather than internal dynamics in the process of designing control law. To overcome the explosion of complexity problem in traditional backstepping design, the dynamic surface control(DSC) method is firstly used to deal with the problem of tracking control for the nonlinear non-minimum phase systems. The proposed outputfeedback DSC controller not only forces the system output to asymptotically track the desired trajectory, but also drives the unstable internal dynamics to follow its corresponding bounded and causal ideal internal dynamics, which is solved via stable system center method. Simulation results illustrate the validity of the proposed output-feedback DSC controller.

关键词： non-minimum phase system output-feedback trajectory tracking internal dynamics dynamic surface control(DSC)

Analysis and improvement of missile three-loop autopilots

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Journal of systems Engineering and Electronics 2009年第4期20卷 844-851页

作者： Lin Defu Fan Junfang Qi Zaikang Mou Yu Dept. of Flying Vehicle Engineering Beijing Inst. of Technology Beijing 100081 P. R. China

The non-minimum phase feature of tail-controlled missile airframes is analyzed. Three selection strategies for desired performance indexes are presented. An acceleration autopilot design methodology based on output feedback and optimization is proposed. Performance and robustness comparisons between the two-loop and classical three-loop topologies are made. Attempts to improve the classical three-loop topology are discussed. Despite the same open-loop structure, the classical three-loop autopilot shows distinct characteristics from a two-loop autopilot with PI compensator. Both the two-loop and three-loop topologies can stabilize a static unstable missile. However, the finite actuator resource is the crucial factor dominating autopilot function.

关键词： missile control three-loop autopilot output feedback fin resource non-minimum phase system

Adaptive fault-tolerant control for non-minimum phase hypersonic vehicles based on adaptive dynamic programming

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Chinese Journal of Aeronautics 2024年第3期37卷 290-311页

作者： Le WANG Ruiyun QI Bin JIANG State Key Laboratory of Mechanics and Control for Aerospace Structures Nanjing University of Aeronautics and AstronauticsNanjing 210016China College of Automation Engineering Nanjing University of Aeronautics and AstronauticsNanjing 211106China

In this paper,a novel adaptive Fault-Tolerant Control(FTC)strategy is proposed for non-minimum phase Hypersonic Vehicles(HSVs)that are affected by actuator faults and parameter *** strategy is based on the output redefinition method and Adaptive Dynamic Programming(ADP).The intelligent FTC scheme consists of two main parts:a basic fault-tolerant and stable controller and an ADP-based supplementary *** the basic FTC part,an output redefinition approach is designed to make zero-dynamics stable with respect to the new ***,Ideal Internal Dynamic(IID)is obtained using an optimal bounded inversion approach,and a tracking controller is designed for the new output to realize output tracking of the nonminimum phase HSV *** the ADP-based compensation control part,an ActionDependent Heuristic Dynamic Programming(ADHDP)adopting an actor-critic learning structure is utilized to further optimize the tracking performance of the HSV control ***,simulation results are provided to verify the effectiveness and efficiency of the proposed FTC algorithm.

关键词： Hypersonic vehicle Fault-tolerant control non-minimum phase system Adaptive control nonlinear control Adaptive dynamic programming

Recent developments on applications of sequential loop closing and diagonal dominance control schemes to industrial multivariable system

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Journal of Central South University 2013年第12期20卷 3401-3420页

作者： A.H.Mazinan M.F.Kazemi Department of Electrical Engineering Islamic Azad University (IAU) South Tehran Branch Department of Electrical Engineering Islamic Azad University (IAU) Lahijan Branch

With a focus on an industrial multivariable system, two subsystems including the flow and the level outputs are analysed and controlled, which have applicability in both real and academic environments. In such a case, at first, each subsystem is distinctively represented by its model, since the outcomes point out that the chosen models have the same behavior as corresponding ones. Then, the industrial multivariable system and its presentation are achieved in line with the integration of these subsystems, since the interaction between them can not actually be ignored. To analyze the interaction presented, the Gershgorin bands need to be acquired, where the results are used to modify the system parameters to appropriate values. Subsequently, in the view of modeling results, the control concept in two different techniques including sequential loop closing control(SLCC) scheme and diagonal dominance control(DDC) schemes is proposed to implement on the system through the Profibus network, as long as the OPC(OLE for process control) server is utilized to communicate between the control schemes presented and the multivariable system. The real test scenarios are carried out and the corresponding outcomes in their present forms are acquired. In the same way, the proposed control schemes results are compared with each other, where the real consequences verify the validity of them in the field of the presented industrial multivariable system control.

关键词： multivariable system diagonal dominance control sequential loop closing control Profibus network OPC server orifice relation interaction analysis Gershogerin bands non-minimum phase system

Active Disturbance Rejection Control for non-minimum phase systems

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Active Disturbance Rejection Control for Non-minimum Phase S...

Stability Margins of MIMO Linear Interval systems

第二十九届中国控制会议

作者： ZHAO Shen,GAO Zhiqiang Center for Advanced Control Technologies,Department of Electrical and Computer Engineering,Cleveland State University,Cleveland,OH 44115,USA

Active disturbance rejection control（ADRC）has been applied to solve various types of control problems across many engineering disciplines,but largely within the confine of minimum phase *** paper,however,explores systematically its applications to non-minimum phase（NMP）systems,particularly those with transfer functions that have right half plane *** is first shown that,a regular ADRC controller,if not tuned carefully,could easily yield an undesirable solution for NMP *** then demonstrate the reasons behind the difficulty using transfer function analysis,leading to a solution in how we tune the ADRC for NMP *** particular,a systematic design and tuning procedure is obtained based on the relationship between the high frequency gain of the system and the controller ***,the proposed method allows a user to easily make a tradeoff between the undershoot,which is unique in NMP systems,and the response time,using the frequency response method of gain and phase compensation.

关键词： Active disturbance rejection control non-minimum phase system Frequency response method

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Stability Margins of MIMO Linear Interval Systems

Design of Neural Network Disturbance Observer using RBFN for Complex nonlinear systems

第三十九届中国控制会议

作者： Xindong Li Yu Wang Kui Zou Zhengwei Shi Science and Technology on Space Intelligent Control Laboratory Beijing Institute of Control Engineering

In this paper, a worst-case margin algorithm is proposed to deal with the stability margins of Multi-Input MultiOutput（MIMO） linear time-invariant interval systems. Firstly, the Kharitonov’s Theorem and V. Krishnamurthi’s corollary on Routh criterion are used to prove the stability of MIMO linear interval systems with affine parametric uncertainty structure. In particular, it can be used to analyze the stability regions of interval systems with parameters as well Secondly, each eigenvalue function of the MIMO linear interval systems is regarded as a Single-Input Single-Output（SISO） linear time-invariant *** the frequency domain approach and optimization algorithms are applied to develop a computationally tractable algorithm for calculating the stability margins. Moreover, this method can be extended to the non-minimum phase system. Finally, the engineer relevance examples are presented to validate the effectiveness and accuracy of the proposed method.

关键词： MIMO linear systems stability margin interval systems Kharitonov’s Theorem non-minimum phase system

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Design of Neural Network Disturbance Observer using RBFN for...