基于半闭环控制的数控系统反向间隙补偿  

Backlash Compensation on CNC Machine Tool Based on Semi-closed Loop Control

作　　者：郭亮[1] 张东升[1] 陶涛[1] 冯斌[1] 盛晓超[1] 颜冠军[1] 

机构地区：[1]西安交通大学装备智能诊断与控制研究所,西安710049

出　　处：《组合机床与自动化加工技术》2011年第4期47-50,共4页Modular Machine Tool & Automatic Manufacturing Technique

基　　金："高档数控机床与基础制造装备"科技重大专项(2009ZX04014-023)

摘　　要：在半闭环控制的机床中反向间隙是影响机床定位精度和加工精度的一项重要因素,对其进行反向间隙补偿是一项非常重要的工作。文章提出了基于半闭环控制下的间隙补偿原理,通过间隙模型仿真验证了补偿算法的可靠性,并且在开放式数控系统实验平台上实现了算法的嵌入,实际的测量结果论证了算法的正确性。实验表明,通过该间隙补偿方法可以有效地降低因反向间隙所造成的轮廓误差。The positional accuracy and machining precision are mainly affected by backlash for semi-closed loop control CNC machine tool.And compensation for backlash is essential to improving the accuracy of machine tool.Compensation algorithm is developed to reduce contouring error in this paper.A simulated model of backlash and Open CNC system are used to verify compensation algorithm.Computational simulations and experimental results have shown that the contouring error due to backlash can be greatly reduced by using backlash compensation.

关 键 词：半闭环控制系统 数控机床 反向间隙 间隙补偿 

分 类 号：TG659[金属学及工艺—金属切削加工及机床]