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position sensorless Control System of Permanent Magnet Synchronous Linear Motor Based on Sliding Mode Observer with an Improved Phase-Locked Loop

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Energy Engineering 2021年第4期118卷 1083-1094页

作者： Jin Zhang Youliang Tang Feng Yu Department of Mechanical and Electrical Engineering Suqian CollegeSuqian223800China School of Electrical Engineering Nantong UniversityNantong226019China

In this paper,position sensorless control system of permanent magnet synchronous linear motor(PMSLM)based on sliding mode observer(SMO)with an improved phase-locked loop(PLL)is ***,according to the mathematical model,a SMO is designed for sensorless control PMSLM ***,an improved PLL is proposed to tackle the imperfection of data overflow existed in the traditional *** designed SMO incorporating with the improved PLL can be effectively suppress the pulsation of the estimated position and hence the chattering of the derived electrical angular *** last,simulated and experimental results are presented to verify the effectiveness and feasibility of the position sensorless control system.

关键词： position sensorless PMSLM SMO PLL

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Design and implementation of a position sensorless control method for brushless DC motors

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Journal of Chongqing University 2016年第2期15卷 43-51页

作者：朱成礼 wang yan-zhong School of Mechanical Engineering and Automation Beihang University Beijing 100191 P. R. China

Because brushless direct current(BLDC) motors have the advantages of a compact size, high power density, high efficiency, and long operating life time, they are widely used in many industrial products and electric traction systems. It is known that the BLDC motors have no brushes for commutation. They are commutated with electronically commutation. So, the rotor position information of the BLDC motors must be known to understand which winding will be energized according to the energizing sequence. In most of the existing BLDC motor drivers, rotor position information is detected by Hall effect sensors. This kind of mechanical position sensors will bring additional connections and costs, reliability decrease and noise increase. In order to improve the control performance and extend the range of speed regulation for BLDC motors, a position sensorless control method is proposed in this paper. In the proposed control method, rotor position information of the BLDC motors is detected from the back electromagnetic forces(back-EMFs) which are estimated by an unknown-input observer with line to line currents and line to line voltages. For the purpose of verifying the effectiveness of the proposed control method, a model is built and simulated on the Matlab/Simulink platform. The simulation results show that the speed regulation performance of BLDC motors is improved compared with using Hall effect sensors. At the same time, the reliability of the BLDC motors is improved and the costs of them are reduced because the position sensor is eliminated.

关键词： brushless DC motor brushless direct current(BLDC) speed control position sensorless inverter

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A position sensorless Control System Based on Adaptive Observer for Low Speed and High Torque Gearless Drive System

A Position Sensorless Control System Based on Adaptive Obser...

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2005国际电机与系统学术会议

作者： Sun Guanggui Chen Xiangjun Zhang Bingyi Feng Guihong School of Electrical Engineering Shenyang University of Technology Shenyang 110023 China

＜正＞ This paper presents a position sensorless control system based on adaptive observer for low speed and high torque gearless drive system. By studying the theory of adaptive control system, an adaptive speed observer based on neural network is introduced in this system. The experimental results demonstrate that the proposed vector control scheme is valid, and the dynamic and static performances are quite well. Furthermore, the propose strategy has stronger robustness.

关键词： position sensorless low speed and high torque gearless drive system adaptive observer

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Research on Rotor EMF-Oriented Doubly Fed Motor without position Sensorsfor Wind-Energy Generation

Research on Rotor EMF-Oriented Doubly Fed Motor without Posi...

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2005国际电机与系统学术会议

作者： Huang Hui Qiu Ruichang Jiang Xuedong School of Electrical Engineering Beijing Jiaotong University Beijing 100044 China

＜正＞ In this paper, a vector control strategy of the doubly fed induction generator using rotor EMF-oriented position sensorless scheme is proposed. Compared with the other position sensorless schemes, the proposed control method only uses the rotor voltage and current as the feedback signals, which substantially reduces the costs and enhances the reliability of the control of the generator. The finite impulse response filter （FIR） is used in the rotor EMF orientation. Simulation shows good response of the system. Experiments based on a 3kW unit demonstrate the correctness and availability of the scheme.

关键词： doubly fed induction generator position sensorless wind-energy generation finite impulse response filter (FIR)

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