Disturbance-compensation of ball screw servo system

2011 ◽  
Author(s):  
Xiang-guo Li ◽  
Zhi-qian Mei
Keyword(s):  
Servo System ◽  
Ball Screw ◽  
Disturbance Compensation

A Drive-Transmission Integrated Linear Electromechanical Actuator

2010 ◽  
Vol 37-38 ◽  
pp. 5-8 ◽  
Author(s):  
Wen Jia Chen ◽  
Jiang Zhang ◽  
Yan Zhong He
Keyword(s):  
Permanent Magnet ◽  
Permanent Magnet Synchronous Motor ◽  
Integrated Design ◽  
Servo System ◽  
Synchronous Motor ◽  
Ball Screw ◽  
Electromechanical Actuator ◽  
Position Feedback

Based on the idea of integrated design, a drive-transmission integrated linear electromechanical actuator is developed. The actuator consists of a permanent magnet synchronous motor (PMSM), a ball-screw and shells. By using coaxial assemblage, the ball-screw is inserted into the hole of the hollow motor rotor and the nut of the ball-screw connects with the motor rotor. In order to restrict the ball-screw rotating relatively to the shell, splines machined respectively on ball-screw and the shell come into being a spline pair. A driver based on a DSP processor and IGBTs plus a position feedback resolver forms a precise servo system.

scholarly journals Novel Sliding Mode Control for Ball Screw Servo System

2016 ◽  
Vol 54 ◽  
pp. 03007
Author(s):  
Rongrong Qian ◽  
Minzhou Luo ◽  
Jianghai Zhao ◽  
Tao Li
Keyword(s):  
Sliding Mode Control ◽  
Sliding Mode ◽  
Servo System ◽  
Ball Screw ◽  
Mode Control

Modeling and Friction Effect of Shipborne Tracking Antenna Servo System

2014 ◽  
Vol 644-650 ◽  
pp. 867-870
Author(s):  
Dong Xu Zhu ◽  
Xin Rong Wang ◽  
Gui Ping Zhang
Keyword(s):  
Mathematical Model ◽  
Pid Control ◽  
Control Method ◽  
Tracking Error ◽  
Servo System ◽  
Nonlinear Perturbation ◽  
Disturbance Compensation ◽  
Friction Effect ◽  
Perturbation Effect

In order to improve the friction nonlinear perturbation effect on shipboard antenna tracking, first to a certain type of ship azimuth servo system as an example, considering the establishment of a mathematical model with friction, and the model is carried out using PID control method. The results show that with friction disturbance considered, there are tracking exist "flat top" phenomenon and large tracking error, and when the speed is low, there is the "crawl" phenomenon.Keywords: ship servo system, friction disturbance, disturbance compensation

scholarly journals Design and implementation of speed fluctuation reduction for a ball screw feed system at low-speed operation

2020 ◽  
Vol 11 (1) ◽  
pp. 163-172
Author(s):  
Zhaoguo Wang ◽  
Xianying Feng ◽  
Fuxin Du ◽  
Hui Li ◽  
Zhe Su
Keyword(s):  
High Speed ◽  
Permanent Magnet Synchronous Motor ◽  
Servo System ◽  
Ball Screw ◽  
Motor Speed ◽  
Feed System ◽  
Low Velocity ◽  
Motor Torque ◽  
Low Speed ◽  
Speed Fluctuation

Abstract. In the high-precision servo feed system, when the permanent magnet synchronous motor (PMSM) is operated at low speed in the classical drive feed system (CDFS), the speed fluctuation caused by the motor torque harmonics seriously affects the speed smoothness of the servo system. In this paper, a novel double-drive differential feed system (DDFS) is proposed to effectively suppress the effect of torque harmonics of PMSM on speed fluctuation of the linear feed system at low-speed operation. Firstly, the effect of motor torque harmonics on motor speed for the DDFS is analyzed by the sensitivity function of the servo system, which indicates that the torque harmonics have little effect on the motor speed at high-speed operation. Then, in the DDFS, we make two motors rotate in the same direction at high speed and differentially synthesize at the ball screw to obtain low-velocity linear motion. Compared with the CDFS, the DDFS can suppress the effect of motor torque harmonics on speed fluctuation of the table and improve speed smoothness at low-speed operation.

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