机械科学与技术2017，Vol.36Issue(4)：605-609,5.DOI:10.13433/j.cnki.1003-8728.2017.0418
基于改进型粒子群PID算法线切割电极丝恒张紧力控制系统
A Constant Wire Tension Control System based on Improved PSO-PID in LS-WEDM
上官同英 1刘继军 1陈志2
作者信息
- 1. 中州大学 工程技术学院,郑州 450015
- 2. 华中科技大学 机械科学与技术学院,武汉 430074
- 折叠
摘要
Abstract
In the low-speed wire electrical discharge machining (LS-WEDM),because the wire electrode is influenced by external disturbance and the control system itself,the wire tension fluctuates mildly in some ranges,and the maximum amplitude can reach 30％.This fact can lead to violent wire deflection and vibration between two guide wheels and seriously influence the geometrical accuracy and surface quality.In this paper,firstly,a detailed force analysis has been implemented,and an improved wire winding system has been introduced.Secondly,a constant wire tension control closed-loop system has been designed,and a mixed algorithm based on the improved Particle Swarm Optimization (Improved-PSO) and Proportion Integration Differentiation (PID) has been used to carry out the online control of the wire tension.Finally,a large number of experiments have been carried out by using this control system.The experimental results show that this closed-loop control system has high precision and real-time,that the wave amplitude of the wire tension can be controlled within 5％,and that the lateral vibration of wire can be reduced by approximately 50％.Therefore,this control system is practical and feasible and can be applied to the WEDM field.关键词
慢走丝线切割/张紧力/改进型粒子群/PID算法Key words
control system/LS-WEDM/wire tension/improved-PSO/PID分类
机械制造引用本文复制引用
上官同英,刘继军,陈志..基于改进型粒子群PID算法线切割电极丝恒张紧力控制系统[J].机械科学与技术,2017,36(4):605-609,5.
