振动台动态角的测试方法研究

振动台在高频振动过程中难免会产生空间的小角度运动,这种角运动在振动试验中是非预期的,应尽量减小。利用激光干涉原理,运用双频激光干涉仪及角度测量组件测量了振动台振动频率达2 000Hz时方位、俯仰、横滚三个方向的实时角度、角速率。通过对测量数据的分析可知环境的振动对测量准确度影响较大,为进一步完善该测试方法指明了研究方向。

Research on Dynamic Angle Measurement Method of Vibration Table

When vibration table vibrates in high frequency,dynamic angle error is induced.This dynamic angle is not anticipated,it is considered a kind of error of the vibration.A dual-frequency laser interferometer is used to measure the dynamic yaw angle、 pitch angle and roll angle respectively when vibration table vibrates in 2 000Hz.In this dynamic angle measurement method laser interference theory is used.We find the vibration of surroundings influences the result greatly by analyzing the test result.A study direction is found to prefect the dynamic angle measurement method.