ACTIVE CONTROL OF FLEXIBLE VIBRATION SYSTEMS WITH INCLINED COMBINED MOUNTS

摘要

In order to reduce the vibration and noise of flexible systems subjected to multi-dimensional excitations efficiently, the paper presents a general model of isolation systems with passive-active inclined mounts by subsystem mobility technique and transfer matrix approach. In the model, the passive mounts are fixed to the seats to react against axial force, transverse force and couples, and inside actuators which are parallel with the passive mount and pined-pined at the seats produce axial active forces. The power flow transmitted into the foundation is considered as a cost function for optimal control and investigating the transfer characteristics of vibration. Some numerical examples are presented to show the effectiveness and the feasibility of the model, and also some useful conclusions are obtained.