VIBRATION CONTROL DEVICE

摘要

PURPOSE:To realize a vibration control device to control a main vibration component properly in the vibration control device used in an engine mount and the like of a vehicle so as to reduce vibration transmitted to a vehicle body from an engine. CONSTITUTION:A transmission force detecting means 30 detects transmission force given to a vibration control mechanism 20 from an internal combustion engine 10. An excitation moment calculating means 50 calculates excitation moment generated by the internal combustion engine 10 according to a crank angle. A vibration system condition quantity estimation means 60 estimates a vibration system condition quantity according to the transmission force, the excitation moment and a previous control value. A control means 70 finds a control value by a control rule having a filter from the estimated vibration system control quantity, and controls valve opening of a valve of the vibration control mechanism 20. The control means 70 has a filter to emphasize a main vibration frequency component.