Method for controlling drive of actuator of active vibration isolation support system

Abstract

A method for controlling the drive of an actuator of an active vibration isolation support system based on crank pulses detected by a crank pulse sensor, involves determination of a crank angular speed, a crank angular acceleration, an engine torque and an amplitude of the engine vibration from the detected crank pulses. When the amplitude is less than a predetermined value the actuator of the active vibration isolation support system is controlled based on the calculated amplitude and a preset phase. On the other hand, when the amplitude is equal to or greater than the predetermined value, an engine vibration phase is calculated from the phase at which the torque is a maximum, and the actuator of the active vibration isolation support system is controlled based on the calculated amplitude and the calculated phase. Thus controlled, the system exhibits an effective vibration isolation function in accordance with the vibration characteristics of individual engines.

Dependencies are inferred from the claim text.