Modeling and Analysis of a Multi-Degree-of-Freedom Micro-Vibration Simulator

Abstract EN

To reproduce the disturbance forces and moments generated by the reaction/momentum wheel assembly, a multi-degree-of-freedom micro-vibration simulator is proposed.

This can be used in the ground vibration experiments of an optical payload replacing the real action/momentum wheel assembly.

First, the detailed structure of the micro-vibration simulator is introduced.

Then, the complete system kinematic and dynamic models of the micro-vibration simulator are derived.

In addition, the disturbance forces and moments produced by the micro-vibration simulator are calculated.

Finally, the normal mode analysis and a cosimulation are adopted to verify the validity of this method.

The analysis and simulation results show that the micro-vibration simulator can exactly reproduce the disturbance forces and moments with different amplitudes and different frequency ranges.