Torsion pendulum for the performance test of the inertial sensor for ASTROD-I

Details 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

May 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005cqgra..22s.537z&link_type=abstract

Classical and Quantum Gravity, Volume 22, Issue 10, pp. S537-S542 (2005).

Computer Science

Performance

3

Scientific paper

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.

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