数控系统中伺服系统位置前馈控制器的设计  

Design of the Position Feed-Forward Controller of Servo System in CNC System

作　　者：金钊[1] 林宝君[2] 冀群心[1] 

机构地区：[1]吉林大学通信工程学院,吉林长春130025 [2]吉林大学辊锻研究所,吉林长春130025

出　　处：《测控技术》2010年第8期65-67,71,共4页Measurement & Control Technology

摘　　要：针对数控机床运行过程中存在的位置定位精度控制问题,提出了一种基于速度和加速度前馈控制的位置控制器,并采用三角函数加减速控制算法,通过前馈控制器可以使伺服系统获得快速的动态响应,并且通过对位置环比例积分系数的调节,可以保证系统定位的高精度、无超调。采用Simulink工具软件建立了位置精度控制的仿真模型,得出了相应的仿真结果。验证了本文所设计的位置前馈控制器的工程实用性。For there have positioning accuracy control problem in the running of CNC machine tool,a kind of position feed-forward controller based on the feed-forward control of speed and acceleration is designed.It combines feed-forward control with the trigonometric functions acceleration/deceleration algorithm.It can make servo system obtain fast dynamic response.And by regulating the proportional-integral coefficient of the position loop of PID controller,it can ensure the system gain high-precision positioning with no overshoot.Using Simulink tools to establish a simulation model of location accuracy controlling,a corresponding simulation result is gained.This result verifies the correctness of the theory proposed in this paper and the practicability in project.

关 键 词：CNC 伺服系统 PID算法 前馈控制 三角函数加减速 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]