Study on 6-DOF active vibration-isolation system of the ultra-precision turning lathe based on GA-BP-PID control for dynamic loads  

作　　者：Bo Wang Zhong Jiang Pei-Da Hu 

机构地区：[1]Department of Precision Instrument,Tsinghua University,Beijing,100084,People’s Republic of China [2]Institute of Machinery Manufacturing Technology,China Academy of Engineering Physics,Mianyang,621900,Sichuan,People’s Republic of China

出　　处：《Advances in Manufacturing》2024年第1期33-60,共28页先进制造进展（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.62073184,52105490).

摘　　要：The vibration disturbance from an external environment affects the machining accuracy of ultra-precision machining equipment.Most active vibration-isolation systems(AVIS)have been developed based on static loads.When a vibration-isolation load changes dynamically during ultra-precision turning lathe machining,the system parameters change,and the efficiency of the active vibration-isolation system based on the traditional control strategy deteriorates.To solve this problem,this paper proposes a vibration-isolation control strategy based on a genetic algorithm-back propagation neural network-PID control(GA-BP-PID),which can automatically adjust the control parameters according to the machining conditions.Vibration-isolation simulations and experiments based on passive vibration isolation,a PID algorithm,and the GA-BP-PID algorithm under dynamic load machining conditions were conducted.The experimental results demonstrated that the active vibration-isolation control strategy designed in this study could effectively attenuate vibration disturbances in the external environment under dynamic load conditions.This design is reasonable and feasible.

关 键 词：Ultra-precision diamond turning lathe Active vibration isolation Six degrees of freedom Dynamic load Genetic algorithm-back propagation neural network-PID(GA-BP-PID)control 

分 类 号：TB535.1[理学—物理]