Dynamic Characteristics of Three-axis Active Mount Featuring Piezoelectric Actuators

In this work, a new type of three-axis active mount using piezoelectric actuators is devised and its dynamic characteristics are investigated. Three piezoelectric actuators are installed on the rubber element with a certain inclined angle. After identifying dynamic properties of the rubber element and the piezoelectric actuator in frequency domain, the governing equation of the proposed active mount is derived. Using the governing equation associated with the identified system parameters, the generated force and moment of the active mount are evaluated in each axis by applying input voltage. In addition, a comparative work is undertaken between simulation and experiment. In order to verify the effectiveness of the proposed three-axis active mount, a vibrating system subjected to vertical, roll, and pitch motion is adopted and computer simulation is undertaken.