摘要
数控机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。为全面分析数控机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,分析系统动态误差。研究结果表明:提高惯量比后,伺服系统表现出更弱响应状态,系统出现了较大的超调,最大为0.108 mm,调节时间为0.92 s,从而影响控制精度。惯性质量比变化会影响到位置准确,惯性比4.15时位置误差最小,此时可以获得最优的控制准确性。该研究有助于提高数控机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。
The control performance of feed servo system of CNC machine tool is affected by mechanical and electrical system force,heat and wear,which will produce dynamic errors in the process of machining.In order to analyze the dynamic error variation of feed servo system of CNC machine tool,a precision three-loop control system is designed,and the coupling model of transmission electromechanical is established to analyze the dynamic error of system.The results show that when the inertia ratio is increased,the servo system presents a weaker response state,the system has a large overshoot,the maximum is 0.108mm,and the adjustment time is 0.92s,which affects the control accuracy.The change of inertia mass ratio will affect the position accuracy.When the inertia ratio is 4.15,the position error is minimum,and the optimal control accuracy can be obtained at this time.The research is helpful to improve the position control accuracy of feed servo system of CNC machine tools,and lays a certain theoretical foundation for the subsequent machining quality optimization.
作者
王晓峰
易宇飞
Wang Xiaofeng;Yi Yufei(Department of Intelligent Manufacturing Engineering,Jiaozuo Technician College,Jiaozuo Henan 454150,China;Department of Automotive Engineering,Jiaozuo Technician College,Jiaozuo Henan 454150,China)
出处
《机械管理开发》
2025年第8期208-209,212,共3页
Mechanical Management and Development
关键词
进给伺服系统
机电耦合
动态误差
惯量比
定位精度
feed servo system
electromechanical coupling
dynamic error
inertia ratio
positioning accuracy
