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PID-type Terminal sliding mode control for Permanent Magnet Synchronous Generator-based Enhanced Wind Energy Conversion Systems

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CSEE Journal of Power and Energy Systems 2022年第4期8卷 993-1003页

作者： Mojtaba Nasiri Saleh Mobayen Ali Arzani the Solar Energy Applications Group Trinity College DublinDublin 2D02 PN40Ireland Department of Electrical Engineering University of ZanjanZanjanIran the Future Technology Research Center National Yunlin University of Science and TechnologyDouliuYunlin County 64002TaiwanChina the Center for Energy Systems Research(CESR) Tennessee Technological UniversityCookevilleTN 38505USA

The provision of wind farm(WF)grid codes(GCs)has become imperative for sustained grid operations,especially for WFs with permanent-magnet synchronous generator(PMSG)wind energy conversion system.Numerous techniques have been developed for executing GC requirements in the event of grid faults.Among the methods,an intriguing strategy is to enhance the performance of back-to-back(BTB)converter controllers.In this research,the PID-type Terminal sliding mode control(PID-TSMC)scheme is implemented for both machine-side and grid-side converter-modified controllers of BTB-converter,to reinforce the nonlinear relationship among the state-variable and the control input.The application of this control scheme decreases the response time and improves the robustness of the BTB-converter controllers regarding uncertainty of parameters and external disturbances.The grid-side converter tracks the maximum power point,contributing to the rapid decrease of generator active power output during faults.This frees up converter capacity for injecting GC-compliant reactive current into the grid.Besides,the machine-side converter regulates DC-link voltage,in which its variations during external disturbances decrease substantially with the PID-TSMC.The discussions on the simulations contemplate on the robustness and efficiency of the implemented PID-TSMC strategy in comparison to other BTB-converter control strategies.

关键词： Back-to-back converter grid code PMSG-based wind turbine Terminal sliding mode control

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Terminal sliding mode control with self-tuning for coronary artery system synchronization

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International Journal of Biomathematics 2017年第3期10卷 219-232页

作者： Zhanshan Zhao Xiaomeng Li Jing Zhang Yongzhen Pei School of Computer Science and Software Engineering Tianjin Polytechnic University Tianjin 300387 P. R. China School of Textiles Tianjin Polytechnic University Tianjin 300387 P. R. China Tianjin Vocational Institute Tianjin 300410 P. R. China

A terminal sliding mode (TSM) control with self-tuning gain algorithm is proposed for the synchronization of coronary artery system under the existence of the unmodeled dynamics and the external disturbance. Considering the sliding mode dynamics of system, a criterion of selecting the parameters is derived to reach the point of equilibrium in the finite time. The theoretic analysis based on Lyapunov theory proved that the systems with the proposed TSM control with self-tuning scheme could be stabilized in finite time. The proposed method shows that the drive and response systems are synchronized and states of the response system track the states of the drive system in finite time. This information about the bound of unmodeled dynamics and the external disturbance is not needed in advance through self-tuning the gains of controller. The results for coronary artery system synchronization simulation show that the proposed TSM controller with self-tuning achieves better robustness and adaptation against unmodeled dynamics and the external disturbance, which offer the theory basis on curing myocardial infarction.

关键词： Coronary artery system chaos synchronization Terminal sliding mode control self-tuning gain external disturbance Variable structure systems unmodeled dynamics System synchronization system response Coronary Arteries drive train tape supply motor

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Terminal sliding mode control for coordinated motion of a space rigid manipulator with external disturbance

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Applied Mathematics and Mechanics(English Edition) 2008年第5期29卷 583-590页

作者：郭益深陈力 College of Mechanical Engineering Fuzhou University

The control problem of coordinated motion of a free-floating space rigid manipulator with external disturbance is discussed. By combining linear momentum conversion and the Lagrangian approach, the full-control dynamic equation and the Jacobian relation of a free-floating space rigid manipulator are established and then inverted to the state equation for control design. Based on the Terminal sliding mode control （SMC） technique, a mathematical expression of the terminal sliding surface is proposed. The terminal SMC scheme is then developed for coordinated motion between the base＇s attitude and the end-effector of the free-floating space manipulator with external disturbance. This proposed control scheme not only guarantees the existence of the sliding phase of the closed-loop system, but also ensures that the output tracking error converges to zero in finite time. In addition, because the initial system state is always at the terminal sliding surface, the control scheme can eliminate reaching phase of the SMC and guarantee global robustness and stability of the closed-loop system. A planar free-floating space rigid manipulator is simulated to verify the feasibility of the proposed control scheme.

关键词： free-floating space rigid manipulator external disturbance terminal slidingsurface coordinated motion Terminal sliding mode control

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Adaptive Terminal sliding mode control for the Combined Spacecraft Takeover control

Adaptive Terminal Sliding Mode Control for the Combined Spac...

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第三十九届中国控制会议

作者： Heng Zhou Yong Zhao Zhijun Chen College of Aerospace Science and Engineering National University of Defense Technology

This paper introduces an adaptive Terminal sliding mode controller to solve the problem of combined spacecraft takeover control. In order to improve the convergence speed of sliding mode controller, the Terminal sliding mode control method is used. Because the quaternion is not directly related to the control torque, a resource matrix gf（X） is introduced to reflect the quaternion information in the expression of torque. Considering the external disturbance, adaptive laws are used to estimate the unknown parameters online and compensate the uncertainty of system. Three kinds of controllers, TSMC（without gf（X））, TSMC and ATSMC, are conducted for comparison and the simulations show that considering the external disturbance, the adaptive Terminal sliding mode control can effectively promote the quaternion and angular velocity of combined spacecraft convergent to the expected states.

关键词： takeover control Terminal sliding mode control adaptive estimation

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Adaptive Terminal sliding mode control for Synchronization of a Chaotic Mechanical System with Input nonlinearity

Adaptive Terminal Sliding Mode Control for Synchronization o...

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第30届中国控制与决策会议

作者： Zhankui Song Shuai Ling School of Mathematical Sciences Dalian University of Technology School of Information Science and Engineering Dalian Polytechnic University

In this paper,the problem of finite-time chaos synchronization for centrifugal flywheel governor with lumped perturbation and control input nonlinearity is investigated.First,a terminal sliding surface is introduced and its finite-time convergence to the equilibrium point is proved.Then,a fuzzy logic system is employed to approximate the lumped perturbation including model uncertainty and external disturbance,therefore,it relax the requirement of the exact model.Afterwards,based on the adaptive laws and finite-time control idea,a robust adaptive Terminal sliding mode controller is proposed to enforce the occurrence of the sliding motion in a given finite time and it also ensure the synchronization tracking-error on the terminal sliding surface to converge to a small neighborhood of equilibrium point in finite-time.It is mathematically proved that the introduced sliding mode technique has finite-time convergence and stability in both reaching and sliding mode phases.Finally,simulation results demonstrate the effectiveness of the proposed control scheme.

关键词： Finite time synchronization Terminal sliding mode control control input nonlinearity Fuzzy logic system

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A novel dynamic Terminal sliding mode control of uncertain nonlinear systems

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控制理论与应用（英文版） 2007年第2期5卷 189-193页

作者： Jinkun LIU Fuchun SUN School of Automation Science and Electrical Engineering Beijing University of Aeronautics and Astronautics Beijing 100083 China State Key Laboratory of Intelligent Technology and Systems Tsinghua University Beijing 100084 China

A new dynamic Terminal sliding mode control （DTSMC） technique is proposed for a class of single-input and single-output （SISO） uncertain nonlinear systems. The dynamic Terminal sliding mode controller is formulated based on Lyapunov theory such that the existence of the sliding phase of the closed-loop control system can be guaranteed, chattering phenomenon caused by the switching control action can be eliminated, and high precision performance is realized. Moreover, by designing terminal equation, the output tracking error converges to zero in finite time, the reaching phase of DSMC is eliminated and global robustness is obtained. The simulation results for an inverted pendulum are given to demonstrate the properties of the proposed method.

关键词： Terminal sliding mode control Dynamic sliding mode Robust control Inverted pendulum

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Adaptive Terminal sliding mode control for high-order nonlinear dynamic systems

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2003年第1期 59-64页

作者：庄开宇苏宏业张克勤褚健 Institute of Advanced Process control Zhejiang University Hangzhou 310027 Institute of Advanced Process control Zhejiang University China National Lab. of Industrial control Technology

An adaptive Terminal sliding mode control (SMC) technique is proposed to deal with the tracking problem for a class of high order nonlinear dynamic systems. It is shown that a function augmented sliding hyperplane can be used to develop a new terminal sliding mode for high order nonlinear systems. A terminal SMC controller based on Lyapunov theory is designed to force the state variables of the closed loop system to reach and remain on the terminal sliding mode, so that the output tracking error then converges to zero in finite time which can be set arbitrarily. An adaptive mechanism is introduced to estimate the unknown parameters of the upper bounds of system uncertainties. The estimates are then used as controller parameters so that the effects of uncertain dynamics can be eliminated. It is also shown that the stability of the closed loop system can be guaranteed with the proposed control strategy. The simulation of a numerical example is provided to show the effectiveness of the new method.

关键词： Terminal sliding mode control Finite time convergence Adaptive laws

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Synchronization of uncertain fractional-order chaotic systems with disturbance based on a fractional Terminal sliding mode controller

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Chinese Physics B 2013年第4期22卷 178-184页

作者：王东风张金营王晓燕 Hebei Engineering Research Center of Simulation & Optimized control for Power Generation (North China Electric Power University)

This paper provides a novel method to synchronize uncertain fractional-order chaotic systems with external disturbance via fractional Terminal sliding mode control. Based on Lyapunov stability theory, a new fractional-order switching manifold is proposed, and in order to ensure the occurrence of sliding motion in finite time, a corresponding sliding mode control law is designed. The proposed control scheme is applied to synchronize the fractional-order Lorenz chaotic system and fractional-order Chen chaotic system with uncertainty and external disturbance parameters. The simulation results show the applicability and efficiency of the proposed scheme.

关键词： fractional-order chaotic system synchronization Terminal sliding mode control uncertainty disturbance

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Disturbance Observer Based Terminal sliding mode control Method for PMSM Speed Regulation System

Disturbance Observer Based Terminal Sliding Mode Control Met...

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第三十届中国控制会议

作者： LI Shihua~1,ZHOU Mingming~1,YU Xinghuo~2 1.School of Automation,Southeast University,Key Laboratory of Measurement and control of CSE,Ministry of Education,Nanjing 210096,P.R.China 2.Platform Technologies Research Institute,RMIT University,VIC 3001,Australia

＜正＞This paper investigates the permanent magnet synchronous motor（PMSM） speed regulation system using Terminal sliding mode control method.By introducing a non-singular terminal sliding mode manifold,a novel Terminal sliding mode controller is designed for the speed loop.This controller can make the states not only reach the manifold in finite time,but also converge to the equilibrium point in finite time.Thus,the controller could make the motor speed reach the reference value in finite time,obtaining a faster convergence and a better tracking precision.Meanwhile,considering the large chattering phenomenon caused by high switching gains,a composite Terminal sliding mode control method based on disturbance observer is proposed to reduce chattering.Through disturbance estimation for feed-forward compensation,the composite Terminal sliding mode controller may take a smaller value for the switching gain without sacrificing disturbance rejection performance.Simulation results and comparisons are given to show the superiority of the proposed method.

关键词： Permanent magnet synchronous motor Speed regulation system Terminal sliding mode control Finite time control Disturbance observer

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Chattering free adaptive fuzzy Terminal sliding mode control for second order nonlinear system

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控制理论与应用（英文版） 2006年第4期4卷 385-391页

A novel fuzzy Terminal sliding mode control （FTSMC） scheme is proposed for position tracking of a class of second-order nonlinear uncertain system. In the proposed scheme, we integrate input-output linearization technique to cancel the nonlinearities. By using a function-augmented sliding hyperplane, it is guaranteed that the output tracking error converges to zero in finite time which can be set arbitrarily. The proposed scheme eliminates reaching phase problem, so that the closed-loop system always shows invariance property to parameter uncertainties. Fuzzy logic systems are used to approximate the unknown system functions and switch item. Robust adaptive law is proposed to reduce approximation errors between true nonlinear functions and fuzzy systems, thus chattering phenomenon can be eliminated. Stability of the proposed control scheme is proved and the scheme is applied to an inverted pendulum system. Simulation studies are provided to confirm performance and effectiveness of the proposed control approach.

关键词： Adaptive fuzzy control Terminal sliding mode control Nonlinear system

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