摘要
在精准控制的要求下,伺服电动缸需保证很高的定位精度,然而在重载工况下,伺服电动缸会发生较大的弹性变形,严重影响伺服电动缸的定位精度。为此,本文对伺服电动缸传动系统进行了机械刚度建模,通过实验验证刚度模型的有效性,并加入了基于刚度模型的前馈控制算法。研究结果表明:所建立的伺服电动缸传动系统刚度模型有效,加入基于刚度模型的前馈控制算法后,伺服电动缸的定位精度得到显著提高。
Under the requirement of precise control,the servo electric cylinder needs to ensure a high positioning accuracy. However,under heavy load,the servo electric cylinder will have a large elastic deformation,which seriously affects its positioning accuracy. To solve this problem,first,the mechanical stiffness model of the servo electric cylinder transmission system is established,which is verified through experiments. Then, a feedforward control algorithm based on the stiffness model is added. The research results show that the established mechanical stiffness model of the established servo electric cylinder transmission system is effective.. The addition of the feedforward control algorithm can significantly improve the positioning accuracy of the servo electric cylinder.
作者
翟富刚
尹燕斌
李超
田纬
乔子石
ZHAI Fu-gang;YIN Yan-binb;LI Chao;TIAN Wei;QIAO Zi-shi(School of Mechanical Engineering,Yanshan University,Qinhuangdao 066004,China;Institute of Mechanical Engineering,Nanjing Institute of Technology,Nanjing 211167,China;Hebei Innovation Center for Equipment Lightuueight Design and Manufacturing,Qinhuangdao 066004,China)
出处
《吉林大学学报（工学版）》
EI
CAS
CSCD
北大核心
2021年第2期442-449,共8页
Journal of Jilin University:Engineering and Technology Edition
基金
国家重点研发计划项目(2018YFB2000700)。
关键词
机械工程
伺服电动缸
定位精度
刚度模型
前馈控制
mechanical engineering
servo motor cylinder
positioning accuracy
stiffness model
feedforward control
