Patent ID: 8775019

Claim:
An active anti-vibration supporting device which supports an engine in a vehicle body and in which a control unit for estimating vibration state based on an output from a sensor detecting a rotation variation of the engine drives to extend or contract an actuator to suppress transmission of vibration, wherein the control unit: calculates a target current waveform for suppressing the transmission of the vibration of the engine by using output data from the sensor; calculates a phase delay of a timing of outputting the target current waveform for suppressing the engine vibration using the output data from the sensor; divides the calculated phase delay by a first predetermined time determined by an engine vibration cycle to calculate its quotient and remainder time; adjusts the first predetermined time based on another engine vibration cycle in which a driving timing of the actuator is set; sets a second predetermined time as a phase delay reference, wherein the second predetermined time is a product of the adjusted first predetermined time and the quotient; and outputs the target current waveform after a period of time equal to the remainder time is passed following the phase delay reference.