数控测试用伺服进给系统非线性建模与仿真  

Nonlinear Modeling and Simulation of Servo Feed System for CNC Test

作　　者：陈凡[1] 范大鹏[1] 张连超[1] 周擎坤[1] 

机构地区：[1]国防科技大学机电工程与自动化学院,长沙410073

出　　处：《组合机床与自动化加工技术》2010年第10期55-60,共6页Modular Machine Tool & Automatic Manufacturing Technique

基　　金：科技重大专项"开放式全数字高档数控装置"(2009ZX04009-011)

摘　　要：提出了一种基于虚拟机床的数控系统运动控制性能新型检测方法,介绍了测试系统的结构与工作原理,并充分考虑间隙与摩擦等非线性因素的作用效果,建立了用于数控测试的机床伺服进给系统的非线性综合仿真模型。仿真实验结果表明间隙及摩擦等非线性因素会影响系统控制效果与加工精度,验证了非线性建模在数控系统运动控制性能测试中的必要性。所建模型为虚拟机床的设计奠定了基础,所提出的检测方法为全面测试数控系统运动控制性能提供了新途径。A new method was given for the test of motion control ability of CNC system based on virtual machine tool.The structure and working principle of the test system was introduced.A set of synthesis nonlinear model of the servo feed system of machine tool,which was used for the CNC test,was build up,with sufficient consideration of the effect of nonlinear factors such as backlash and friction.The simulation experiment demonstrated that the nonlinear factors including backlash and friction would affect the effect of system control and the machining accuracy,and the essentiality of the nonlinear modeling in the test of motion control ability of CNC system was verified.The foundation was laid for the design of virtual machine tool by the model set up,and a new way for all-around test of motion control ability of CNC system was provided by the measurement given.

关 键 词：数控测试 伺服进给系统 间隙 摩擦 建模 

分 类 号：TP271.2[自动化与计算机技术—检测技术与自动化装置]