FULLY ADAPTIVE SEMI-ACTIVE CONTROL OF VIBRATION ISOLATION BY MR DAMPER

摘要

This paper is concerned with a new fully adaptive control scheme for vibration isolation using a semi-active MR damper installed between ground and ?rst ?oor, which is composed of two adaptive controllers. One is an adaptive inverse controller which can give necessary input voltage to MR damper so as to generate speci?ed reference damping force to be acted on a controlled structure. The input voltage is decided using a nonlinear adaptive observer with identi?ed model parameters of the MR damper which expresses hysteresis behavior of nonlinear dynamic friction mechanism of the MR ?uid. The other is an adaptive reference controller which can match the dynamics of the ?rst ?oor of structure to a reference dynamics. The proposed fully adaptive approach can cope with uncertainties in both models of MR damper and structure. Theoretical analysis and experimental results are also shown to validate its effectiveness.