CNC锻床伺服系统三环PSO-PID整定控制机电耦合研究
Research on Electromechanical Coupling of Three-Ring PSO-PID Setting Control for CNC Forging Machine Servo System
王辉 1王博 2李强 3于小艳4
作者信息
- 1. 新乡职业技术学院机械制造系,河南 新乡 453000
- 2. 漯河技师学院电气工程系,河南 漯河 462001
- 3. 河南理工大学机械与动力工程学院,河南 焦作 454000
- 4. 航空工业新航豫北转向系统有限公司,河南 新乡 453000
- 折叠
摘要
数控(CNC)锻冲床进给伺服系统控制性能受到机电系统力、热、磨损的共同影响,在加工过程中会产生动态误差.为全面分析数控锻冲床进给伺服系统动态误差变化,设计了一种精度三环控制系统,建立了传动机电耦合模型,并开展仿真分析.从进给伺服系统实际运行工况区间考虑,分析系统动态误差.研究结果表明:增大工况载荷后,形成了更大惯量比伺服系统,系统获得了更大的超调量,引起响应时间增加.进给伺服系统产生了5.5mm位置偏差,在惯量比4.15下获得了最优定位精度.相比较PID控制,采用PSO-PID方法处理时可以降低误差,获得了最明显的效果.该研究有助于提高数控锻冲床进给伺服系统位置控制精度,为后续的加工质量优化奠定一定的理论基础.
Abstract
The control performance of the feed servo system of CNC forging press is affected by the force,heat and wear of electro-mechanical system,and dynamic errors will be produced in the machining process.In order to comprehensively analyze the dy-namic error variation of CNCforging press feed servo system,a precision three-loop control system is designed,and the electrome-chanical coupling model of mechanical transmission is established and simulated.Considering the actual operating conditions of the feed servo system,the dynamic error of the system is analyzed.The results show that a larger inertia ratio servo system is formed when the load is increased,and the system obtains a larger overshoot,resulting in an increase in response time.The posi-tion deviation of the feed servo system is 5.5mm,and the optimal positioning accuracy is obtained at the inertia ratio of 4.15.Compared with PID control,PSO-PID method can reduce the error and obtain the most obvious effect.The research is helpful to improve the position control accuracy of CNC forging press feed servo system and lay a theoretical foundation for the subsequent machining quality optimization.
关键词
进给伺服系统/三环控制/惯量比/定位精度Key words
Feed System/Three Loop Control/Moment of Inertia Ratio/Positioning Accuracy引用本文复制引用
基金项目
河南省高等学校重点科研项目计划资助(20B140014)
出版年
2024
NETL
NSTL
万方数据