基于频域——时域的机床直行部件运动误差在线测量  

Machine Tools Linear Slide Motion Error on Line Measurement Based on the Time Domain and Frequency Domain

作　　者：苏恒[1] 洪迈生[1] 李自军[1] 魏员雷[1] 熊诗波[2] 

机构地区：[1]上海交通大学,上海200030 [2]太原理工大学,太原030024

出　　处：《仪器仪表学报》2003年第3期275-280,共6页Chinese Journal of Scientific Instrument

基　　金：国家自然科学基金资助 ( No 5 0 0 75 0 5 6)

摘　　要：提出了以频域三点法求得的直线度误差为递推叠代初值的精确时域两点法测量机床直行部件运动误差的新方法。频域三点法所使用的测量数据是通过把传感器拾取的原始数据做对称延拓预处理后得到的 ,这样就可以避免经典频域三点法测量直线度误差时 ,由于直线度误差的非周期性、非封闭性以及端点不连续而引起的高阶谐波分量失真边缘效应。同时 ,利用现代控制理论分析了经典频域三点法的谐波抑制特性。A novel accurate two probe method in time domain is put forward to measure straight going component motion error in machine tools, which initial recursive value is derived from frequency 3 point method. The data used by frequency 3 point method is the symmetrical continuation of probes' primitive signal. Accordingly, higher order harmonic component distortion in measurement result caused by the characteristics of non periodic and non closing in straightness profile error will be avoided. At the same time, harmonic suppression is analyzed based on modern control principle. The analysis result is proved to be correct by the experiment.

关 键 词：机床 直行部件 运动误差 在线测量 趋势项 对称延拓 误差初值 误差分离 精确时域两点法 

分 类 号：TG502.1[金属学及工艺—金属切削加工及机床] TH161[机械工程—机械制造及自动化]