电磁振动台角运动分量测量方法

摘要

Electromagnetic shaker is usually used to generate linear movement vertical with the table surface. Small components of linear and angular movements are coupled with the main component movement of the shaker. When test gyroscope with the electromagnetic shaker, angular movement is needed to be measured. A method to measure the angular movement on the linear movement shaker is introduced. Laser interferometers are used to measure angular velocity, and the measurement uncertainty is analyzed. Measurement results show that the proposed method is effective%电磁振动台一般产生垂直于其台面的线运动,同时在其主运动分量也会耦合有其他方向的线运动或角运动分量,它们一般比较小.当采用电磁振动台进行陀螺线振动试验时,振动台产生的陀螺敏感轴方向角运动分量会使陀螺产生输出,因而需要对其进行测量.提出了振动台线振动耦合的角运动分量的一种测量方法,从理论上分析了该方法的可行性,并对测量不确定度进行了分析.采用激光干涉仪进行测量的结果表明所提出的方法是有效的.