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为了对位标器陀螺转轴的静不平衡量及其分布的角位置进行测试,研制了一种位标器陀螺转轴静平衡测试系统.该系统通过调整夹具的方向使得位标器的被测轴与转台水平轴平行安装,测控系统驱动转台依次转至预先设定的36个锁定角位置处,在每个锁定角位置处,由伺服控制信号锁定位标器的两个轴后,驱动另外一个被测轴进行正弦小角度转动,通过对被测轴驱动电流测量量的多周期积分就可以得出被测轴此时的静不平衡力矩.转台顺次转过一周后,通过对被测轴所测36个静不平衡力矩及转台锁定角度的最小二乘拟合,可以确定出被测轴的静不平衡量大小及其分布的角位置.最后进行了加载实验及其重复性测试实验,结果表明该测试系统重复测量的静不平衡量测试精度能达到±0.25 mN·m,角位置测试精度能达到±2°,具有较高的测试精度.
In order to test the statically unbalanced quantity and the angular position of the gyro spindle, a static balance test system of the gyro spindle is developed. The system adjusts the orientation of the fixtures so that the measured axis Turntable parallel to the horizontal axis installation, measurement and control system drive turntable followed by turn to the preset 36 lock angle position, at each lock angle position, the servo control signal to lock the scaler two axes, the other driven by The measuring shaft is rotated at a small angle of the sine wave, and the static imbalance moment at the measured shaft can be obtained through multi-period integral of the measuring current of the measured shaft driving current. After one turn of the rotary table sequentially, Measuring the static unbalance moment of 36 and the locking angle of the turntable by the least square fitting to determine the size of the measured axis of the static unbalance and the angular distribution of its position.Finally, the loading test and its repeatability test results show that The measurement accuracy of static unbalance measurement can be up to ± 0.25 mN · m and the angular position accuracy can be up to ± 2 °. This method has higher testing accuracy.