Positive position feedback control for large space structures

摘要: A new technique for vibration suppression in large space structures is investigated laboratory experiments on a thin cantilever beam. The technique, called Positive Position Feedback (PPF), makes use of generalized displacement measurements to accomplish suppression. Several features make it attractive the structure control environment. realization controller simple and straightforward. Global stability conditions can be derived which are independent dynamical characteristics being controlled, i.e., all spillover stabilizing. Furthermore, method made insensitive finite actuator dynamics, amenable strain-based sensing approach. described here first six bending modes beam, piezoelectric materials actuators sensors, simulating active-member. Modal damping ratios as high 20% critical achieved.