Control Strategy and Method for Variable Polishing Force Adapting to the 5-Axis Machining Trajectory

被引：0
|
作者：
Shi J.-S. [1 ]
Dong J.-L. [1 ]
Liu C. [1 ]
Yu T.-B. [1 ]
机构：
[1] School of Mechanical Engineering & Automation, Northeastern University, Shenyang
来源：
Dongbei Daxue Xuebao/Journal of Northeastern University | 2020年 / 41卷 / 01期
关键词：
5-axis machining trajectory; Moving average filtering; PID control; PWM signal; Variable polishing force;
D O I：
10.12068/j.issn.1005-3026.2020.01.016
中图分类号：
学科分类号：
摘要：
A pneumatic polishing force loading control system based on high speed on/off controlled by pulse-width modulation(PWM) signals was designed. The control system was adjusted by the moving average filter PID control method. PID parameters were determined by Simulink simulation and experiment, so the dynamic property of the system was improved to ensure the control requirement of variable polishing force. Assisted by a 3-TPS hybrid robot, a 5-axis variable polishing force experiment system was built, and the experiment of variable polishing force adapting to the 5-axis machining trajectory was conducted. The experiment results illustrate that the moving average filtering PID control can quickly respond as the setting force changes and the measure force value can quickly track the changing setting value. The average error of the force is about ±1 N with a small fluctuation range. The control system has enough stability and accuracy to satisfy the control requirement of variable polishing force. Variable polishing force adapting to the 5-axis machining trajectory is thus achieved. © 2020, Editorial Department of Journal of Northeastern University. All right reserved.
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页码：89 / 94
页数：5
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