Patent ID: 7311300

Claim:
An actuator drive control device for an active vibration isolation support system, comprising: an elastic body that receives a load of a vibrating body; a liquid chamber in which the elastic body forms at least a part of a wall surface; a movable member for changing a capacity of the liquid chamber by reciprocating periodically; and an actuator operating periodically by receiving supply of an electrical current corresponding to a vibration state of the vibrating body; a controller which is configured to control supply of the electrical current to the actuator; the electrical current being supplied to the actuator to move the movable member in one direction, and with a restoring force of the elastic body deformed, the movable member is moved back in the other direction when the electrical current supply is stopped, wherein when an electrical current of a present period rises before an electrical current value of a previous period which is supplied to the actuator becomes 0, the controller decreases the electrical current value of the present period.