Robust permanent magnet linear synchronous motor servo system based on disturbance observer

2002 ◽  
Author(s):  
Wang Limei ◽  
Guo Qingding
Keyword(s):  
Permanent Magnet ◽  
Disturbance Observer ◽  
Servo System ◽  
Synchronous Motor ◽  
Linear Synchronous Motor

scholarly journals Intelligent Adaptive Jerk Control With Dynamic Compensation Gain for Permanent Magnet Linear Synchronous Motor Servo System

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 138456-138469
Author(s):  
Hao Yuan ◽  
Ximei Zhao ◽  
Dongxue Fu
Keyword(s):  
Permanent Magnet ◽  
Servo System ◽  
Synchronous Motor ◽  
Dynamic Compensation ◽  
Linear Synchronous Motor

A novel high-precision motion control for permanent magnet linear synchronous motor servo system

2020 ◽  
pp. 1-21
Author(s):  
Hao Yuan ◽  
Ximei Zhao ◽  
Dongxue Fu
Keyword(s):  
Permanent Magnet ◽  
Motion Control ◽  
High Precision ◽  
Servo System ◽  
Synchronous Motor ◽  
High Frequency Oscillation ◽  
Continuous Control ◽  
Precision Motion Control ◽  
Linear Synchronous Motor ◽  
Precision Motion

In this paper, a novel high-precision motion control is proposed for a permanent magnet linear synchronous motor (PMLSM) servo system, which is vulnerable to the influence of uncertainties. First, the dynamics of the PMLSM with uncertainties are derived. To cater for the parametric uncertainties, the model-based feedforward control is constructed so that the transient response of the system is improved. Moreover, the adaptive jerk control (AJC) scheme based on a robust integral of the sign of the error (RISE) feedback is adapted to restrain the uncertainties such as external disturbance and nonlinear friction in the system. To alleviate the chattering phenomenon, a novel exponential adaptive law is designed to bound the feedback gain of the jerk, under the condition of the initial term of control efforts considered. Then, the jerk signal is integrated to form the feedback control law, which generates continuous control input and ensures the stability of the system. Compared with sliding mode control (SMC), the experimental results indicate that both the robustness and tracking performance of the system are significantly improved without adding more control efforts. The position tracking error is reduced and high-frequency oscillation is effectively attenuated.

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