Active Disturbance Rejection Position Control of Permanent Magnet Linear Synchronous Motors Using Feedback Nonlinear State Error

2021 ◽  
Author(s):  
Yang Xiao ◽  
Sudan Huang ◽  
Guangzhong Cao ◽  
Huaizhi Wang ◽  
Junqi Xu
Keyword(s):  
Permanent Magnet ◽  
Disturbance Rejection ◽  
Position Control ◽  
Synchronous Motors ◽  
Active Disturbance Rejection ◽  
Linear Synchronous Motors ◽  
Nonlinear State ◽  
State Error

Sensorless Position Control of Surface Permanent Magnet Linear Synchronous Motors

2011 ◽  
Vol 88-89 ◽  
pp. 165-169
Author(s):  
Hua Cai Lu ◽  
Ming Jiang ◽  
Qi Gong Chen ◽  
Li Sheng Wei
Keyword(s):  
Permanent Magnet ◽  
Closed Loop ◽  
Position Control ◽  
High Gain ◽  
Initial Position ◽  
Practical Implementation ◽  
Model Estimation ◽  
Synchronous Motors ◽  
Linear Synchronous Motors ◽  
Motor Model

In this paper, a novel sensorless position control for a surface permanent magnet linear synchronous motor (SPMLSM) is presented. The position and speed of the SPMLSM drive is obtained through a closed loop observer by only measuring phase voltages and currents. Estimation of speed is done using difference between estimates of the current derivatives in the dq frame, which calculated two different ways: first using a high-gain observer, and then using the motor model. Estimation of the mover position is done through integrating the estimation of speed. The proposed scheme works in a closed loop fashion. It enhances the allowable initial position error; can be used without any physical modification; does not rely on motor saliency and requires no knowledge of the load. Results from numerical simulations and practical implementation are presented to validate the proposed schemes.

scholarly journals Teeth Arrangement and Pole–Slot Combination Design for PMLSM Detent Force Reduction

Energies ◽  
2021 ◽  
Vol 14 (23) ◽  
pp. 8141
Author(s):  
Shi-Uk Chung ◽  
Ji-Young Lee
Keyword(s):  
Permanent Magnet ◽  
Position Control ◽  
Design Method ◽  
Synchronous Motors ◽  
Detent Force ◽  
Linear Synchronous Motors ◽  
Force Reduction

This paper introduces and investigates a new design method that employs both teeth arrangement and pole–slot combination to reduce the detent force of permanent magnet linear synchronous motors (PMLSMs) for precision position control. The proposed topology is a 10-pole, 12-slot-based PMLSM comprising two sections that significantly reduce the detent force without implementing a skewing design. It was analytically and experimentally confirmed that the proposed design effectively reduces detent force with a negligible sacrifice of mover length. The general characteristics and servo performance of the proposed PMLSM were experimentally examined and then discussed.

Simulation of Control System for Permanent Magnet Synchronous Machine

2011 ◽  
Vol 66-68 ◽  
pp. 1422-1427
Author(s):  
Ting You ◽  
Pei Jiang Li
Keyword(s):  
Control System ◽  
Sliding Mode Control ◽  
Permanent Magnet ◽  
Disturbance Rejection ◽  
Sliding Mode ◽  
Synchronous Machine ◽  
Permanent Magnet Synchronous Machine ◽  
Mode Control ◽  
Active Disturbance Rejection ◽  
Disturbance Rejection Control

For optimal control of synchronous machine, chattering phenomenon will appear if traditional slider control is adopted because permanent magnet synchronous machine is a complex nonlinear time-dependent system with strong coupling of current and rotational speed to cause the deterioration of system control performance with load or load disturbance. In this article, based on the mathematical model of permanent magnet synchronous machine, a control system for it, which combines sliding mode control and active disturbance rejection control, is proposed to improve the dynamic performance and robustness of control system. In the control system, sliding mode control is adopted to control the inner current of machine and active disturbance rejection control is adopted to control the outer speed. The load disturbance of system is also estimated and offset. The results of matlab simulation show that the control system can eliminate serious chattering phenomenon existing in sliding mode control, improves the robustness of system for load and system parameter disturbance as well as has great dynamic and static performance.

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