摘要
针对双惯量伺服进给系统对其中间环节分析不足、参数整定算法精度较低等问题,提出了一种多惯量伺服进给系统模块化建模的方法。将数控机床伺服进给系统转化为多惯量系统,分为电机、丝杠、工作台3个单元,单元间的连接件(联轴器和丝杠螺母)均等效为柔性连接件。基于PID的三闭环控制系统,运用Matlab对永磁同步电机矢量控制系统模型、机械传动系统模型进行仿真,整定优化各项参数。仿真结果表明:模块化建模方法能够对多惯量伺服系统存在的问题进行精准分析,对系统中间连接环节具有更为有效的分析效果;提高了仿真模型以及参数整定算法的精度,且仿真效果较好。
According to the problem that the intermediate link analysis is insufficient and the accuracy of the parameter setting algorithm is low,a method of modular modeling of multi-inertia servo feed system is proposed. The servo feed system of Computer Numerical Control( CNC) machine tool is transformed into a multi inertia system,which is divided into three parts,the motor,the screw and the worktable. Based on PID three closed-loop control system,using Matlab software to simulate the vector control system of Permanent Magnet Synchronous Motor( PMSM) and mechanical transmission system model,and then adjusting the parameters. The simulation results show that the modular modeling method can be used to analyze the problems accurately in the multi-inertia servo system,and it has a more effective analysis on the middle link of the system. The accuracy of the simulation model and parameter setting algorithm is improved,and the simulation results are good.
出处
《机床与液压》
北大核心
2015年第24期51-55,共5页
Machine Tool & Hydraulics
基金
supported by Universities in Shandong Province Science and Technology Project (No.J10LD09)
