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New hybrid sensorless speed of a non-salient pole PMSG coupled to wind turbine using a modified switching algorithm

ISA TRANSACTIONS 2019年 94卷 187-199页

作者： Mohamed, Mansouri Said, Hassaine Mhamed, Larbi Mohamed, Bey Tayeb, Allaoui Mouloud, Denai Mohamed, Moudjahed IBN Khaldoun Univ Lab Energy Engn & Comp Engn Tiaret Algeria Univ Hertfordshire Sch Engn & Technol Hatfield Herts England

The paper focuses on the design of position and speed observers for the rotor of a non-salient pole permanent magnet synchronous generator (NSPPMSG) coupled to a wind turbine. With the random nature of wind speed this observer is required to provide a position and speed estimates over a wide speed range. The proposed hybrid structure combines two observers and a switching algorithm to select the appropriate observer based on a modified weighting coefficients method. The first observer is a higher-order sliding mode observer (HOSMO) based on modified super twisting algorithm (STA) with correction term and operates in the medium and nominal wind speed ranges. The second observer is used in the low speed range and is based on the rotor flux estimation and the control by injecting a direct reference current different to zero. The stability of each observer has been successfully assessed using an appropriate Lyapunov function. The simulation results obtained show the effectiveness and performance of the proposed observer and control scheme. (C) 2019 ISA. Published by Elsevier Ltd. All rights reserved.

关键词： Non-salient PMSG Standalone wind turbine High-order sliding mode super-twisting algorithm Fuzzy logic control

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Adaptive super-twisting sliding mode control of three-phase power rectifiers in active front end applications

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IET CONTROL THEORY AND APPLICATIONS 2019年第10期13卷 1483-1490页

作者： Luo, Wensheng Zhao, Tongyu Li, Xiaolei Wang, Zhenhuan Wu, Ligang Harbin Inst Technol Sch Astronaut Harbin 150001 Heilongjiang Peoples R China Harbin Inst Technol Space Control & Inertial Technol Res Ctr Harbin 150001 Heilongjiang Peoples R China

A robust control approach for three-phase two-level grid-connected power converters using an adaptive super-twisting algorithm (ASTA) is studied. A cascaded structure of the proposed control method is employed, which consists of two control loops, the dc-link capacitor voltage regulation loop (outer loop) and the grid phase current tracking loop (inner loop). In the outer control loop, a proportional controller using $H_{\infty }$H infinity technique is considered, which is designed to regulate the dc-link capacitor voltage to some desired value. An extended state observer used to asymptotically estimate the external disturbance is integrated into the outer control loop. For the inner control loop, two ASTA-based controllers are implemented that force the grid phase currents to their desired values in finite time. Lyapunov analysis is provided to show the finite time convergence of the closed-loop system. With the help of ASTA, a priori knowledge of the upper bounds of the derivative of the disturbances is not required. Illustrative simulation results in comparison with the linear proportional-integral control method are provided to demonstrate the effectiveness and robustness of the proposed ASTA, in the presence of load variation and parametric uncertainty.

关键词： closed loop systems observers electric current control robust control power convertors power grids voltage control nonlinear control systems control system synthesis variable structure systems Lyapunov methods closed-loop system grid phase currents ASTA-based controllers inner control loop desired value proportional controller outer control loop inner loop grid phase current tracking loop outer loop dc-link capacitor voltage regulation loop control loops super-twisting algorithm three-phase two-level grid robust control approach active front end applications three-phase power rectifiers adaptive super-twisting sliding mode control linear proportional-integral control method

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A New Finite Time Convergence Condition for super-twisting Observer Based on Lyapunov Analysis

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ASIAN JOURNAL OF CONTROL 2015年第3期17卷 1050-1060页

作者： Mu, Chaoxu Sun, Changyin Tianjin Univ Sch Elect & Automat Engn Tianjin 300072 Peoples R China Southeast Univ Sch Automat Nanjing 210096 Jiangsu Peoples R China

A new convergence condition is proposed for the super-twisting sliding mode observer in this paper, where Lyapunov stability analysis is used as the main method to get the new convergence condition. The super-twisting sliding mode observer is designed to obtain unknown system states of the second order nonlinear system with bounded uncertainties and disturbances. By involving a quadratic Lyapunov function, the Lyapunov approach is applied to the stability analysis of the super-twisting observer, from which a new convergence condition is obtained to guarantee the finite time convergence of the observer. Simulation results of a pendulum and a rigid manipulator are included to demonstrate the effectiveness of the new convergence condition.

关键词： super-twisting algorithm finite-time convergence Lyapunov analysis observer

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High-order sliding mode control of a DC motor drive via a switched controlled multi-cellular converter

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INTERNATIONAL JOURNAL OF SYSTEMS SCIENCE 2011年第11期42卷 1869-1882页

作者： Djemai, M. Busawon, K. Benmansour, K. Marouf, A. Univ Lille Nord France F-59000 Lille France UVHC LAMIH F-59313 Valenciennes France CNRS FRE 3304 F-59313 Valenciennes France Northumbria Univ Sch Comp Engn & Informat Sci Newcastle Upon Tyne NE1 8ST Tyne & Wear England Univ Medea Dept Elect Engn Medea Algeria

In this article, we present a high-order sliding mode controller of a DC motor drive connected to a multi-cellular converter. More specifically, we design a second-order (super-twisting) control algorithm for the speed regulation of a DC motor. For this, a switching control for the multi-cellular converter is derived in order to supply the correct reference value for the speed regulation. A practical implementation of the controller is realised using a laboratory set-up. The performance and the validity of the controller are shown experimentally.

关键词： control of hybrid systems sliding mode control multi-cellular converter super-twisting algorithm

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Adaptive second order sliding mode guidance law for missile-target interception with fuzzy logic system

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PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART G-JOURNAL OF AEROSPACE ENGINEERING 2023年第11期237卷 2665-2676页

作者： Gursoy-Demir, Handan Efe, Mehmet Onder Hacettepe Univ Grad Sch Sci & Engn Ankara Turkiye Iskenderun Tech Univ Dept Comp Engn Hatay Turkiye Hacettepe Univ Dept Comp Engn Ankara Turkiye

This paper presents the design of a 3D missile guidance law based on a second order sliding mode control technique employing an adaptive tuning law and a fuzzy gain scheduling. At the outset, the super-twisting sliding mode guidance law is obtained to overcome the chattering phenomenon. Then, without the knowledge about the bounds of disturbances, an adaptive law is used to determine the control gains. The results are enhanced using a fuzzy module that provides the controller parameters according to a set of linguistic rules. Finally, a comparative set of simulation results are given. To verify the performance and effectiveness of the proposed guidance law, we compare the performances of the traditional sliding mode (SM) guidance law, the traditional super-twisting sliding mode (STWSM) guidance law, the adaptive super-twisting sliding mode (ASTWSM) guidance law and the adaptive fuzzy super-twisting, sliding mode (AFSTWSM) guidance law. The simulation scenarios consider fundamental target movements. The results demonstrate that the proposed adaptive guidance laws display better performance in terms of miss distance, intercept time, and final closing velocity compared the alternatives considered in this study.

关键词： Guidance laws second-order sliding mode control super-twisting algorithm adaptive control fuzzy logic control

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Three-dimensional continuous-time integrated guidance and control design using model predictive control

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PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART G-JOURNAL OF AEROSPACE ENGINEERING 2023年第3期237卷 503-515页

作者： Sheikhbahaei, Reza Khankalantary, Saeed Sharif Univ Technol Dept Mech Engn Tehran Iran KN Toosi Univ Technol Dept Elect Engn Tehran *** Iran

In this study, a novel three-dimensional continuous-time integrated guidance and control (IGC) scheme is presented. The proposed method is developed on the basis of generalized model predictive control (GMPC) approach and super-twisting extended state observer (STESO). The GMPC is used to generate the optimal closed form control law for the interceptor and the STESO is applied to estimate the maneuvering target lateral accelerations as well as the lumped disturbances. To the aim of IGC design, a six-degrees-of-freedom model based on the interceptor-target kinematics and interceptor dynamics is constructed. Afterward, the GMPC control law formulation for a nonlinear system exposed to disturbances is extracted. Finally, the effectiveness of the proposed IGC system is studied by numerical simulations. The simulation results reveal satisfactory interception performance including less energy consumption in comparison to a recently proposed successful IGC method.

关键词： integrated guidance and control generalized model predictive control extended state observer super-twisting algorithm

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Chattering Free Distributed Consensus Control for Attitude Tracking of Spacecraft Formation System with Unmeasurable Angular Velocity

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INTERNATIONAL JOURNAL OF CONTROL AUTOMATION AND SYSTEMS 2020年第9期18卷 2277-2288页

作者： Xu, Miao Fang, Yiming Li, Jianxiong Zhao, Xiaodong Yanshan Univ Key Lab Ind Comp Control Engn Qinhuangdao 066004 Hebei Peoples R China Yanshan Univ Engn Res Ctr Educ Minist Intelligent Control Syst & Intelligen Qinhuangdao 066004 Hebei Peoples R China

In this paper, the attitude tracking control of spacecraft formation is studied when the velocities of spacecrafts are unmeasurable. Firstly, a Finite-Time Extended State Observer (FTESO) is constructed to estimate the unmeasured angular velocity and compensate the external disturbance for each spacecraft. Secondly, a chattering free distributed consensus controller which did not require inversion of Laplacian matrix is proposed based on FTESO and Integral Nonsingular Terminal Sliding Mode (INTSM). It is proved that the proposed consensus controller can realize finite-time attitude tracking control of spacecraft by the Lyapunov stability theory. Finally, a simulation example with one leader and four followers is given. The simulation results show that the proposed consensus controller can eliminate system chattering, and provide fast finite-time convergence performance and high precision tracking.

关键词： Attitude tracking finite time extended state observer spacecraft formation system super-twisting algorithm

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New variable gain super-twisting sliding mode observer for sensorless vector control of nonsinusoidal back-EMF PMSM

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CONTROL ENGINEERING PRACTICE 2016年 52卷 59-69页

作者： Baratieri, Cassio Luciano Pinheiro, Humberto Univ Fed Santa Maria Ctr Technol 1000 Roraima St BR-97105900 Santa Maria RS Brazil

This paper presents a new discrete-time super-twisting sliding mode observer with variable gains for sensorless nonsinusoidal vector control of permanent magnet synchronous motors. This observer is adopted to estimate the back electromotive forces (back-EMF) that are required for the rotor speed estimation and for the nonsinusoidal vector control. In addition, their gains are time-varying to minimize the chattering. So, they are adjusted based on internal states of the super-twisting algorithm. The stability analysis is investigated from the Lyapunov theory for discrete-time systems. Finally, simulation and experimental results are presented to demonstrate the good performance and the effectiveness of the proposed observer. (C) 2016 Elsevier Ltd. All rights reserved.

关键词： Discrete-time sliding mode Nonsinusoidal back-EMF Permanent magnet synchronous motor Sliding mode observer Sensorless vector control super-twisting algorithm

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Sliding mode control for offshore parallel antenna platform with large orientation workspace

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ISA TRANSACTIONS 2022年第PartB期128卷 90-108页

作者： He, Yuhang Wu, Yaozhong Li, Weijia Huazhong Univ Sci & Technol Sch Naval Architecture & Ocean Engn Wuhan Peoples R China Collaborat Innovat Ctr Adv Ship & Deep Sea Explora Shanghai Peoples R China Hubei Key Lab Naval Architecture & Ocean Engn Hydr Wuhan Peoples R China Wuhan Univ Sci & Technol Sch Automobile & Traff Engn Wuhan Peoples R China 1037 Luoyu Rd Wuhan Hubei Peoples R China

A novel sliding mode control strategy is proposed to solve the trajectory tracking control problem of an offshore antenna platform, which uses a Stewart-type parallel mechanism and has a large orientation workspace. To obtain comprehensive posture parameters of the offshore antenna platform, a posture compensation algorithm using the information of azimuth and elevation is proposed. Considering known limb lengths, a state observer which based on a super-twisting algorithm is presented to obtain limb velocities. To solve the trajectory-tracking control problem of the platform, a modified nonsingular terminal integral sliding mode controller is proposed. To reduce chattering, the sliding mode controller is equipped with a higher order super-twisting algorithm. The Lyapunov theory was used to prove its stability. Simulation results on a large-orientation workspace offshore antenna platform demonstrate its superiority over three other controllers. Compared with the traditional sliding mode controller with super-twisting algorithm, the integral of the squared error of the proposed control strategy is 49.49% lower.(c) 2021 ISA. Published by Elsevier Ltd. All rights reserved.

关键词： Offshore antenna platform Parallel mechanism Large orientation workspace super-twisting algorithm Terminal sliding mode

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Saturated exponential super-twisting sliding mode control for bottom-following of biomimetic underwater vehicles with unmeasured velocities

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INTERNATIONAL JOURNAL OF ROBUST AND NONLINEAR CONTROL 2024年第1期34卷 681-702页

作者： Gao, Liyang Qin, Hongde Li, Peng Si, Jinshuai Harbin Engn Univ Sci & Technol Underwater Vehicle Lab Harbin 150001 Peoples R China Harbin Engn Univ Yantai Res Inst Yantai Peoples R China Harbin Engn Univ Grad Sch Yantai Peoples R China

This article addresses the bottom-following problem for biomimetic underwater vehicles without translational velocity measurements in the presence of complex uncertainties and actuator saturation. A novel saturated exponential super-twisting algorithm based integral terminal sliding mode control (SESTA-ITSMC) scheme is created to ensure fast convergence and strong robustness as well as attenuate the chattering of actuators. Salient features are as follows. Instead of discontinuous term in the conventional super-twisting algorithm, a novel SESTA is developed by incorporating a fractional power term, which ensures that the system achieves a faster transient response, effectively eliminating the chattering phenomenon. Then, to deal with the unknown states and further improve the anti-interference ability of the system, the finite-time dual estimator is devised to fast and precisely estimate the translational velocities and lumped uncertainties. Finally, a finite-time anti-windup auxiliary system is proposed to compensate for the saturation constraints on actuators in real time. Finite-time convergence of estimation errors and bottom following errors is guaranteed by the Lyapunov stability theory. Comparative simulation results fully demonstrate the excellence of the proposed SESTA-ITSMC scheme.

关键词： biomimetic underwater vehicles (BUVs) bottom following dual estimator super-twisting algorithm unmeasured velocities

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