Experimental verification of acceleration feedback control strategies for MDOF structures

摘要

Most of the previous active structural control strategies for aseismic protection have been based on full state feedback (i.e., the structural displacements and velocities). However, accurate measurement of the displacements and velocities is difficult to achieve directly, particularly during seismic activity, since the foundation of the structure is moving with the ground. Because accelerometers can readily provide reliable measurement of the structural accelerations at strategic points on the structure, development of control methods based on acceleration feedback is an ideal solution to this problem. The purpose of this paper is to demonstrate experimentally that stochastic control methods based on absolute acceleration measurements are viable and robust, and that they can achieve performance levels comparable to full state feedback controllers.