Torsion pendulum for the performance test of the inertial sensor for ASTROD-I
Torsion pendulum for the performance test of the inertial sensor for ASTROD-I
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DOI：
10.1088/0264-9381/22/10/055
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发表时间：
2005-04
影响因子：
3.5
通讯作者：
Z. Zhou;S. Gao;J. Luo
中科院分区：
文献类型：
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作者：
Z. Zhou;S. Gao;J. Luo
为ASTROD-1惯性传感器的地面性能测试建造了一个扭摆装置。测试质量的扭转运动被监测和伺服控制。基于扭转光纤的弹性力矩标定了静电伺服驱动器的灵敏度，伺服驱动扭摆的力矩分辨率在1~0.1 Hz范围内达到2 × 10 − 11 Nm Hz − 1/2，但受到地震噪声、电子噪声以及平移和扭转模态之间的交叉耦合的限制。
A torsion pendulum facility for a ground-based performance test of the inertial sensor for ASTROD-1 has been constructed. The twist motion of the test mass is monitored and servo-controlled. The sensitivity of the electrostatic servo-controlled actuator is calibrated based on the elastic torque of the torsion fibre, and the torque resolution of the servo-controlled torsion pendulum comes to 2 × 10−11 N m Hz−1/2 from 1 mHz to 0.1 Hz, which is likely limited by the seismic noise, electronic noise and the cross coupling between the translation and twist modes.