郑高铭,焦新泉,贾兴中.基于基线偏移的加速度积分速度与位移的方法[J].电测与仪表,2021,58(9):142-146. ZHENG Gaoming,JIAO Xinquan,JIA Xingzhong.Method for calculating velocity and displacement based on acceleration of baseline offset[J].Electrical Measurement & Instrumentation,2021,58(9):142-146.
基于基线偏移的加速度积分速度与位移的方法
Method for calculating velocity and displacement based on acceleration of baseline offset
Aiming at the problems of vibration dynamic displacement and permanent displacement measurement at the launching cylinder mouth during aerospace test,by comparing the traditional frequency domain quadratic integral, time domain quadratic integral, frequency domain-time domain hybrid integral and wang-zhou method, a data segmentation method based on time domain integral is proposed, which divides the data into three segments, according to each The vibration of a piece of object is processed differently, and the time domain integral is obtained to obtain the displacement curve. By comparing the processing of the two sets of data with the measured data of the standard displacement meter, the maximum peak error of the displacement curve is less than 20%, and the permanent displacement error is less than 8%. The experimental results show that the segmentation method can better reflect the true vibration displacement trend of the launching nozzle.
