Optimal Linear Quadratic Gaussian Controller Design for a Flexible-SpacecraftSimulator

摘要

The experimental verification of active control methods for vibration suppressionof large flexible structures in space is essential for precision optical and military payload operations. The Flexible-Spacecraft Simulator (FSS) at the Naval Postgraduate School is designed for testing such control designs. The experimental setup simulates the pitch axis motion of a rigid body spacecraft with a flexible antenna support structure connected to a rigid reflector. A twenty-four state finite element analytical model is used to characterize the flexible appendage. Piezoelectric sensors and actuators are used for feedback control for vibration suppression. In addition, an external infrared camera provides direct feedback of the flexible structure's elbow and tip displacements