Robust Stabilization for Flexible Space Structures by a Proper Controller Using Displacement Output

Abstract

We consider robust stabilization for flexible space structures with collocated sensors and actuators. It has been known DVDFB stabilizes an overall closed-loop system robustly against uncertain parameters. However, for implementation of DVDFB, velocity sensors are needed. For reduction of costs, it is desined not to use such sensors. Therefore, we approximate DVDFB by a proper controller using only displacement output, and introduce a robust stabilization condition of the approximated DVDFB.