Modeling and Control of Torsional Vibrations in a Flexible Structure : Vibration, Control Engineering, Engineering for Industry

概要

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This paper descrives a modeling method of torsional vibrations of flexible, large, space structures, such as solar battery arrays, and a cnotrol method based on this model. The torsional vibrations are modelled by taking into account the flexibility of the solar array and the inertial moments of the supporting rigid body, based on the unconstrained mode method. Employing this model of the flexible structure, the system and the observation equations of the dynamics can be derived in the form of a state representation after an n mode decomposition. The torsional vibrations can be measured by using a newly developed differential-type sensor, which consists of a pair of neighboring solar cells. A vibration control method is shown by the state feedback based on the dynamics. Some of the experimental results employing the proposed control method are also shown.
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