A hybrid control system for distributed active vibration and shock absorbers

Abstract

The control methods used for shock or free vibration are usually different from those for forced vibration, because shock vibration can be regarded as a type of transient vibration that is different from steady-state forced vibration. In reality, however, both steady-state and transient excitations may occur in transport vehicles, thus there is a need to control both types of vibration. To show the integration of different vibration control strategies, a hybrid control system including a distributed resonant absorber and a distributed shock absorber is proposed. The hybrid system is governed by a control arbitrator that switches a set of sensors and actuators between the two active vibration absorbers according to various external excitation conditions. The effectiveness of the integrated system is shown through simulations and experiments