PMSM Servo System Control Based on Disturbance Observer

2010 ◽  
Vol 44-47 ◽  
pp. 1090-1094
Author(s):  
Hua Wei Chai ◽  
Jin Yu Zhou ◽  
Wei Ping Zhang ◽  
Zhi Gang Li
Keyword(s):  
Disturbance Observer ◽  
High Speed ◽  
Closed Loop ◽  
Servo System ◽  
System Control ◽  
Strong Impact ◽  
Closed Loop System ◽  
Ac Servo System ◽  
Ac Servo ◽  
Speed Tracking

In order to realize high speed control of some ac servo system, aimed at all kinds of uncertain factors such as greatly changing moment and torque, and strong impact torque. Therefore, for gaining good speed tracking characteristics, adaptive disturbance observer is adopted to observe load torque disturbance and speed variation. Stability of closed loop system is guaranteed by design of control tractics to satisfy track control requests of rocket launcher servo system. Simulation results indicate that this method can ideally observe disturbance and reduce output of controller, thus control performance of the system is improved and is greatly meaningful.

Application of Sliding Mode Cascade Controller in AC Servo System

2013 ◽  
Vol 748 ◽  
pp. 731-734
Author(s):  
Ying Zhang ◽  
Peng Li ◽  
Ya Jun Guo
Keyword(s):  
Sliding Mode Control ◽  
High Speed ◽  
Sliding Mode ◽  
Servo System ◽  
System Response ◽  
System Control ◽  
Tracking Accuracy ◽  
Ac Servo System ◽  
Mode Control ◽  
Ac Servo

According to the requirement of high precision and high speed in an AC servo system, based on sliding mode control theory, a cascade control is put forward. Sliding mode controller of the speed loop is applied to reduce the system steady state error and increases system response speed, and the sliding mode control of the position loop is applied to improve the system dynamic tracking accuracy and system robustness. According to the simplified mathematical model of the position loop and speed loop, system control law is derived. Experiment results show that the proposed sliding mode cascade controller can guarantee the dynamic performance of the servo system.

Current Filtration and Control of Wide-Ranged Speed Regulation AC Servo System

2012 ◽  
Vol 263-266 ◽  
pp. 703-708
Author(s):  
Long Bai ◽  
Hong Song Zhao ◽  
Yuan Jun Zhou ◽  
Zhi Cen Dong
Keyword(s):  
Magnetic Field ◽  
Experimental Data ◽  
High Speed ◽  
Servo System ◽  
Synchronous Motor ◽  
Rotational Inertia ◽  
Ac Servo System ◽  
Ac Servo ◽  
Speed Regulation ◽  
And Control

This paper carries research on the methods of wide-ranged speed regulation AC servo system based on the permanent magnetic synchronous motor. The permanent magnetic synchronous motor(PMSM) is a kind of motor with high speed and low rotational inertia, which needs overcoming nonsinusoidal magnetic field，cogging effect and the interference produced by chopper circuit when fulfilling wide-ranged speed regulation. In this paper, the authors analyze the phase current wave of PMSM, and put forth an appropriate type of digital filteration, which is proved true by computer simulation and experimental data.

Research on closed-loop simulation system for digital AC servo system

2009 ◽  
Vol 52 (7) ◽  
pp. 1830-1837 ◽  
Author(s):  
ShuangHui Hao ◽  
WeiFeng Zheng ◽  
MingHui Hao ◽  
RuQi Ma ◽  
Hong Li
Keyword(s):  
Closed Loop ◽  
Servo System ◽  
Simulation System ◽  
Ac Servo System ◽  
Ac Servo

Research on Compensating Method of Flux Fluctuations in Permanent Magnet of AC Servo System

2012 ◽  
Vol 433-440 ◽  
pp. 4071-4076
Author(s):  
Bao Zhong Qu ◽  
Er Bao Peng
Keyword(s):  
Permanent Magnet ◽  
High Speed ◽  
Position Control ◽  
Servo System ◽  
Industrial Robots ◽  
Control Measures ◽  
Cnc Machine Tools ◽  
Servo Drive ◽  
Ac Servo System ◽  
Ac Servo

This paper suggests a compensating method of flux fluctuations in permanent magnet of AC servo system. after analyzing the characteristics and control measures of flux fluctuations, the compensation strategy for reducing the effect of flux fluctuations on electromagnetic torque is put forward. Though the simulation experiments it is shown that the flux compensation method for improving the position control accuracy of the movers when their running at high speed is proved to be positive effective. For CNC machine tools, industrial robots and other occasions involving sophisticated movement, synchronous servo motors in permanent magnet are usually driven by high-performance sine wave. In order to obtain good control performance, the high demands are put forward for reducing the torque fluctuations Torque fluctuations are an important factor to affect the stability of low speed servo drive system, high-speed stability and precision position control. There are many factors causing torque fluctuations, in which the flux fluctuations in permanent magnet are an important one.

Robust High-Speed Positioning Servo System Based on Disturbance Observer

2009 ◽  
Vol 129 (3) ◽  
pp. 235-242 ◽  
Author(s):  
Masaki Sazawa ◽  
Kiyoshi Ohishi ◽  
Seiichiro Katsura
Keyword(s):  
Disturbance Observer ◽  
High Speed ◽  
Servo System

Control of a lamination process

2005 ◽  
Vol 219 (1) ◽  
pp. 69-81 ◽  
Author(s):  
R Whalley ◽  
M Ebrahimi
Keyword(s):  
High Speed ◽  
Closed Loop ◽  
Cost Effective ◽  
Closed Loop System ◽  
Design Validation ◽  
Control Effort ◽  
Speed Of Response ◽  
Feedback Compensation ◽  
Lamination Process ◽  
Compensation Design

A high-speed laminating machine for a fabric coating and conversion process is considered. Following analysis procedures, state-space and the admittance transfer function descriptions for the system are derived. Regulation of the fabric tension owing to heat shrinkage and environmental and coating variations is necessary. An optimum, minimum control effort strategy is proposed, enabling simple cost effective regulation, without the use of active elements. The speed of response of the system is improved by the use of feedback compensation. Design validation, via simulation, obtaining the open- and closed-loop system responses is employed, demonstrating the achievement of smooth, almost monotonic variations in tension following reference changes, as specified.

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