基于LMS滤波算法优化数控加工速度误差的应用
Application of Optimizing CNC Machining Speed Error Based on LMS Filtering Algorithm
王舒玮1
作者信息
- 1. 山西大同大学机电工程学院,山西大同 037000
- 折叠
摘要
针对数控加工过程中速度误差导致加工精度低的问题,研究所加工零件的加工精度、切削加减速误差和切削加速度变化规律等,提出基于LMS滤波算法的数控加工速度误差优化.通过对非均匀有理B样条(NURBS)曲线进行仿真加工,对数控机床加工速度进行自适应控制.通过引入最小均方算法进行误差分析,从而提高插补速度精度,使数控机床加工误差降低、效率提高.通过实验测试对所提误差控制方法进行验证.结果表明:基于LMS滤波算法优化数控加工误差控制,不仅使数控机床加工速度得到提高,还有效解决了数控机床加工运动过程中存在的加工误差问题,使加工精度得到有效提升,证明所提加工误差控制方法具有一定可行性.
Abstract
For the problem of low machining accuracy caused by speed errors during CNC machining process,the machining accu-racy,cutting acceleration and deceleration errors and the variation law of cutting acceleration of the processed parts were studied.An op-timization of CNC machining speed error based on LMS filtering algorithm was proposed.Non-uniform rational B-Splines(NURBS)were simulated and processed,and the machining speed of CNC machine tools was adaptively controlled.The least mean square was in-troduced for error analysis,thereby improving the accuracy of interpolation speed,reducing the machining error of CNC machine tools,and improving the efficiency of CNC machining.The proposed error control method was validated and analyzed through experimental tes-ting.The results show that optimized CNC machining error control based on LMS filtering algorithm not only improves the machining speed of CNC machine tools,but also effectively solves the problem of machining errors in the machining motion process of CNC ma-chine tools,machining accuracy is effectively improved.It is proved that the proposed machining error control method is feasible to a cer-tain extent through experimental tests.
关键词
数控加工/最小均方算法/非均匀有理B样条/滤波算法Key words
CNC machining/least mean square algorithm/non-uniform rational B-splines/filtering algorithm引用本文复制引用
基金项目
山西省基础研究计划(202103021224313)
山西大同大学2021年度科研专项课题项目(2021YGZX53)
出版年
2024
NETL
NSTL
万方数据