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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

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

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 for wide speed range operation of brushless DC motor

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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

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

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

第二十七届中国控制会议

作者： Mao Zehui,Jiang Bin College of Automation Engineering Nanjing University of Aeronautics and Astronautics,Nanjing 210016,P.R.China

In this paper,a novel sliding mode observer-based fault estimation（FE） method is presented for a class of the nonlinear networked control systems（NCSs） with Markov transfer ***,the nonlinear NCS is modelled by a nonlinear discrete Takagi-sugeno（T-S） fuzzy model using Euler approximate ***,a sliding mode based nonlinear discrete observer is proposed such that the sliding motion of the error dynamical system is asymptotically stable on a designed *** the FE can be achieved through this ***,an example is included to show the efficiency of the proposed method.

关键词： Nonlinear networked control systems Fault estimation sliding mode observer

sliding mode observer-based fault reconstruction for uncertain descriptor linear systems

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Sliding mode observer-based fault reconstruction for uncerta...

2009年中国智能自动化会议

作者：于金泳刘志远 Department of Control Science and Engineering Harbin Institute of Technology

Fault detection and reconstruction of actuator faults for uncertain descriptor linear system based on a sliding mode observer was *** design algorithms of sliding mode observer for linear descriptor systems with faults and uncertain were *** method uses Hconcepts to design the observer gain such that L gain from the uncertainty to reconstruction error of fault was minimized.

关键词： fault detection and reconstruction descriptor system sliding mode observer L2 gain

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

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

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

Actuator Fault Diagnosis for Flight Control System Based on sliding mode observer

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Actuator Fault Diagnosis for Flight Control System Based on ...

第30届中国控制与决策会议

作者： Lu Quan Bin Jiang Pu Yang College of Automation Engineering Nanjing University of Aeronautics and Astronautics

In this paper, a sliding mode observer based fault diagnosis method was proposed for a class of linear systems with the disturbance and model uncertainty to detect the actuator faults. The difficulty on the sliding mode observer method can be directly solved by using linear matrix inequalities（LMIS）. The stability of the designed sliding mode observer can be guaranteed by Lyapunov stability theory. The proposed actuator fault diagnosis method is tested in a 3-DOF aircraft simulation platform to illustrate the performance of the proposed observer and the effectiveness of the fault diagnosis algorithm.

关键词： sliding mode observer Fault diagnosis Flight control system

Sensorless Control for Brushless DC Motors Using Adaptive sliding mode observer

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Sensorless Control for Brushless DC Motors Using Adaptive Sl...

第二十九届中国控制会议

作者： SHI Tingna,LU Na,LI Wenshan School of Electrical Engineering and Automation,Tianjin University,Tianjin 300072,P.R.China Tianjin Key Laboratory Process Measurement and Control

An adaptive sliding mode speed and position observer for sensorless control of brushless DC motor（BLDCM）is proposed in this *** the mathematical model of BLDCM,the sliding surface was defined based on the errors between actual and estimated *** control and model reference adaptive control（MRAC）is used to obtain position and speed signals of the *** Lyapunov theory is introduced to prove the convergence of this system.A sensorless control system for BLDCM based on the sliding mode observer is *** stability of this observer which shows good robustness is not influenced by both load disturbance and measurement *** result of simulation shows that the proposed method can correctly estimate the speed and position of the rotor,and the system has good dynamic and static performances.

关键词： sliding mode observer Sensorles Control Brushless DC Motor