摘要
对转子轴心轨迹测量中圆弧形导致的偏差进行了分析,探讨了测量截面上转子半径、径向位移对偏差大小的影响,分析表明:测量截面圆半径越小、径向位移越大,测量值与实际值偏差也就越大;在对偏差进行分析的基础上,提出了一种偏差修正方法,给出了修正计算公式,该方法需输入测试截面的转子半径,然后可基于测得的位移计算实际的轴心位移。修正方法可以消除圆弧导致的测量偏差,提高测量精度,可用于实时测量系统,也可用于测量后的数据后处理。该方法具有重要的工程应用价值,对于提高测量精度等方面具有重要的参考价值。
Analysis on deviation caused by circular arc in axis orbit measurement was conducted,and the effects of the radius in the measurement plane and the displacements in the radial direction on the deviation were discussed.The results show that the smaller the radius in the measurement plane is,the more the deviation is;and the more the displacement in the radius direction is,the more the deviation is.Based on the analysis on the deviation,a modification method was presented,which was able to compute the real displacements of the axis orbit based on the measured displacements,with the radius in the measurement plane as an input.By using the proposed modification method,the deviation caused by circular arc can be eliminated,and improvement on measurement accuracy is made.The modification method has a significant engineering application value,which is suitable for both real-time testing systems and offline systems.
作者
马会防
万召
MA Huifang;WAN Zhao(AECC Commercial Aircraft Engine Co.,Ltd.,Shanghai 200241,China)
出处
《振动与冲击》
EI
CSCD
北大核心
2019年第24期243-248,共6页
Journal of Vibration and Shock
关键词
轴心轨迹
测量
偏差
修正
axis orbit
measure
deviation
modification
