CAJ | 학술논문

目的：提出一种精密离心机主轴回转系统误差分析方法。方法基于奇异谱分析对主轴回转误差的趋势进行提取，采用4个安装指定位置的高精度传感器测量轴回转相对位置变化，对数据进行奇异谱分析，采用差分奇异谱的准则来确定重构数据所需的基本分解信号，重构获得的数据为测量数据的趋势部分，即为主轴回转的系统误差。结果重构获得的数据趋势在各个转速下均与实测结果趋势基本一致。结论基于奇异谱分析的精密离心机空气轴承主轴回转误差趋势分析方法能够有效地用于补偿修正该系统误差。
목적：제출일충정밀리심궤주축회전계통오차분석방법。방법기우기이보분석대주축회전오차적추세진행제취，채용4개안장지정위치적고정도전감기측량축회전상대위치변화，대수거진행기이보분석，채용차분기이보적준칙래학정중구수거소수적기본분해신호，중구획득적수거위측량수거적추세부분，즉위주축회전적계통오차。결과중구획득적수거추세재각개전속하균여실측결과추세기본일치。결론기우기이보분석적정밀리심궤공기축승주축회전오차추세분석방법능구유효지용우보상수정해계통오차。
ABSTRACT:Objective To provide a method for error analysis of spindle rotation system of precision centrifuge. Methods Based on singular spectrum analysis (SSA), the tendency of system error was extracted. Four high-precision sensors were used to measure the relative position changes of the spindle. Signal reconstruction was decomposed by differential-SSA and the data tendency were obtained, i.e., the spindle rotation system error. Results The tendency by reconstruction was consistent with the measured results at each speed. Conclusion This method could be used to compensate the spindle rotation system error of precision centrifuge.