STUDY ON THE CONTROL LIMITATION OF PARALLEL TYPE ACTIVE VIBRATION ISOLATOR BY ELECTRO-MAGNETIC ACTUATOR FOR NAVAL SHIPBOARD EQUIPMENT

As underwater threats to destroy a naval ship have been continuously advanced, concerns on signal management induced from ship's mission conducts such as acoustic, vibration, shock, thermal and EMX signals have been also increased. The shock and vibration requirements for naval shipboard equipment has been enhanced together with other signal requirement enhancement and somewhat new approaches such as semi-active and active type mount systems are gradually attempted to satisfy the requirement. In this research, as one of their approaches, the active type vibration isolator by an electro-magnetic actuator was suggested for naval shipboard equipment especially, the water circulation system and examined its effectiveness. In addition, the design guideline of an active vibration isolator by an electromagnetic actuator and its control limitation when applying parallel type active system are also proposed.