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Decoupling Adaptive sliding mode observer Design for Wind Turbines Subject to Simultaneous Faults in Sensors and Actuators

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IEEE/CAA Journal of Automatica Sinica 2021年第4期8卷 837-847页

作者： Hamed Habibi Ian Howard Silvio Simani Afef Fekih School of Civil and Mechanical Engineering Curtin UniversityWA 6102Australia Department of Engineering University of FerraraFerrara 44100Italy Department of Electrical and Computer Engineering University of Louisiana at LafayetteLouisiana 70504 USA

This paper proposes an adaptive sliding mode observer(ASMO)-based approach for wind turbines subject to simultaneous faults in sensors and *** proposed approach enables the simultaneous detection of actuator and sensor faults without the need for any redundant hardware ***,wind speed variations are considered as unknown disturbances,thus eliminating the need for accurate measurement or *** proposed ASMO enables the accurate estimation and reconstruction of the descriptor states and *** proposed design implements the principle of separation to enable the use of the nominal controller during faulty *** tolerance is achieved by implementing a signal correction scheme to recover the nominal *** performance of the proposed approach is validated using a 4.8 MW wind turbine benchmark model subject to various ***-Carlo analysis is also carried out to further evaluate the reliability and robustness of the proposed approach in the presence of measurement ***,ease of implementation and the decoupling property are among the positive features of the proposed approach.

关键词： Fault tolerant control horizontal axis wind turbines Monte-Carlo analysis principle of separation simultaneous faults sliding mode observer

Improved estimation of rotor position for sensorless control of a PMSM based on a sliding mode observer

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Journal of Central South University 2016年第7期23卷 1643-1656页

作者： Wahyu Kunto Wibowo Seok-Kwon Jeong Department of Electrical Engineering Universitas Pertamina Refrigeration and Air-Conditioning Engineering Pukyong National University

This work proposes a new strategy to improve the rotor position estimation of a permanent magnet synchronous motor(PMSM) over wide speed range. Rotor position estimation of a PMSM is performed by using sliding mode observer(SMO). An adaptive observer gain was designed based on Lyapunov function and applied to solve the chattering problem caused by the discontinuous function of the SMO in the wide speed range. The cascade low-pass filter(LPF) with variable cut-off frequency was proposed to reduce the chattering problem and to attenuate the filtering capability of the SMO. In addition, the phase shift caused by the filter was counterbalanced by applying the variable phase delay compensation for the whole speed area. High accuracy estimation result of the rotor position was obtained in the experiment by applying the proposed estimation strategy.

关键词： rotor position estimation permanent magnet synchronous motor sliding mode observer adaptive observer gain cascadelow-pass filter variable cut-off frequency variable phase delay compensation

Consensus of second-order nonlinear multi-agent systems via sliding mode observer and controller

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Journal of Systems Engineering and Electronics 2017年第4期28卷 756-765页

作者： Xiaolei Li Xiaoyuan Luo Shaobao Li Jianjin Li Xinping Guan School of Electrical Engineering Yanshan University Tandon School of Engineering New York University Institute of Electronic Information and Electrical Engineering Shanghai Jiao Tong University

This paper investigates the consensus problem of second-order nonlinear multi-agent systems (MASs) via the sliding mode control (SMC) approach. The velocity of each agent is assumed to be unmeasurable. A second-order sliding mode observer is designed to estimate the velocity. Then a distributed discontinuous control law based on first-order SMC is presented to solve the consensus problem. Moreover, to overcome the chatting problem, two controllers based on the boundary layer method and the super-twisting algorithm respectively are presented. It is shown that the MASs will achieve consensus under some given conditions. Some examples are provided to demonstrate the effectiveness of the proposed control laws.

关键词： nonlinear multi-agent system sliding mode observer consensus sliding mode controller

Modified sliding mode observer-based Direct Torque Control of Six-phase Asymmetric Induction Motor Drive

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Chinese Journal of Electrical Engineering 2023年第3期9卷 111-123页

作者： Krunal Shah Abid Mansuri Rakesh Maurya Department of Electrical Engineering Sardar Vallabhbhai National Institute of TechnologySurat 395007India

In this study,a six-phase induction asymmetric induction motor(SPAIM)was examined,whose performance surpasses that of its three-phase counterpart,with regard to the torque density,torque pulsation,fault tolerance,power rating per inverter lag,and noise ***-encoder-less direct torque control(DTC)for SPAIM with virtual voltage vectors(VVVs)and a modified sliding mode observer(MSMO)are *** SPAIM model was developed using a stationaryα-βframe for *** conventional DTC of the SPAIM drive is a simple extension of DTC for a 3-Φmotor drive that yields higher distortion in the stator *** mitigate the large amount of distortion in the stator current,VVVs were used to significantly reduce the harmonic content in the stator ***,to overcome the large amount of chattering observed in the case of a traditional sliding mode observer,particularly under low-speed operation,the MSMO was employed to reduce chattering even under low-speed *** performance of the proposed observer was verified under all the operating conditions suitable for the propulsion mode of an electric vehicle using Matlab/Simulink,and the results were experimentally validated.

关键词： Direct torque control multiphase induction motor drive sliding mode observer space vector modulation

Position Sensorless Control for Permanent Magnet Synchronous Motor Using sliding mode observer

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Transactions of Tianjin University 2005年第5期11卷 338-342页

作者：陈益广傅涛李响 School of Electrical and Automation Engineering Tianjin University

An approach of position sensorless control for permanent magnet synchronous motor （ PMSM ） is put forward based on a sliding mode observer. The mathematical model of PMSM in a stationary αβ reference frame is adopted, and the system is controlled by the digital signal processor （ DSP; TMS320LF2407 according to the control achieve closed loop operation of the motor, the stator theory of sliding mode observer. In order to magnetic field should be vertical with the rotor magnetic field and be synchronous with rotor rotating, so the position and speed of PMSM is estimated in real time and the estimated position is modified continuously. The simulation results indicate that the proposed observer has high precision is more robust to the parametric variation and load in estimation of PMSM position and speed, and torque disturbance.

关键词： permanent magnet synchronous motor position sensorless control sliding mode observer digital signal processor

An optimal torque distribution for electric vehicle based on sliding mode observer 36

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An optimal torque distribution for electric vehicle based on...

Modified sliding mode observer for wide speed range operation of brushless DC motor

第36届中国控制会议

作者： Niaona Zhang Haolin Li Xiaofang Zhang Xiaohui Lu Electronic and Electrical Engineering Institute Changchun University of Technology School of Mechatronic Engineering Changchun University of Technology

ISBN: (纸本)9781538629185

Four wheels driven electric vehicle has advantages in stability control,active safety control and other aspects,the reasonable torque distribution strategy directly affects the driving performance of the *** this paper,an optimal torque distribution approach is proposed for electric vehicle equipped with four independent wheel motors to improve vehicle handling and stability ***,a novel objective function is formulated which considering the interference among different performance ***,in order to improve the stability of the vehicle under different driving conditions,the purpose of the dynamic weighting factor is to adjust the relative weight of each performance in the objective *** the same time,the control effect of the controller is controlled by the input parameters,therefore a tire-force estimation based on sliding mode observer is present to improve the accuracy in estimating tire ***,the simulation results indicate that the proposed control can effectively improve the vehicle handling and stability.

关键词： Optimal torque distribution sliding mode observer Handling and stability

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Frontiers of Electrical and Electronic Engineering in China 2012年第4期7卷 467-476页

作者： A. DEENADAYALAN Chintala DHANANJAI G. SARAVANA ILANGO Power Converters Research Laboratory Department of Electrical andElectronics Engineering National Institute of Technology Tiruchirap-palli Tamilnadu India

This paper describes an adaptive gain sliding mode observer for brushless DC motor for large variations in speed. Sensorless brushless DC motor based on sliding mode observer exhibits multiple zero crossing in back electromotive force （EMF） which leads to commutation problems at low speed. In this paper, a modified sliding mode observer incorporating a speed component in the estimation of back EMF is proposed. It is found that after incorporating the speed component in the back EMF observer gain, multiple zero crossings at low speeds and phase shift at higher speeds are eliminated. The trapezoidal back EMF observer is implemented experimentally on a digital signal processor （DSP） board. The effectiveness of the proposed method is demonstrated through simulations and experiments.

关键词： brushless DC (BLDC) back electromotiveforce (EMF) sliding mode observer

Actuator fault sliding mode observer design with signal quantization 36

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Actuator fault sliding mode observer design with signal quan...

sliding mode observer-Based Fault Estimation for Nonlinear Networked Control Systems

第36届中国控制会议

作者： Yongjun Cao Ming Liu Zhuoshi Li South China Robotics Innovation Research Institute Research Center of Satellite Technology Harbin Institute of Technology

ISBN: (纸本)9781538629185

In this paper,the design problem of sliding mode observer is addressed for a class of linear continuous-time systems with actuator faults and limited data communication.A new descriptor sliding mode observer approach is developed to solve this design issue,where a discontinuous input is constructed to reject actuator *** is proved that the lower bound on the density of the quantizer is 1/3,under which the quantization errors could be compensated completely by the switching term of the *** on the proposed observer method,the system state vector can effectively track the state estimator and quantization errors ***,a practical example is provided to show the effectiveness of the presented observer design method.

关键词： State estimation Signal quantization sliding mode observer Actuator fault

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Sliding Mode Observer-Based Fault Estimation for Nonlinear N...