Patent ID: 6059274
Filing Date: 2000-05-09
Classification: F16F

Abstract:
A vibration reduction system comprising:a base;a disturbance generating device that causes a disturbance in the base; anda plurality of active mounts, connected to the base and the disturbance generating device, for imparting forces at points on the base to minimize transmission of a disturbance to the base from the disturbance generating device, each of said active mounts including:a passive element, connected to the base, that supports the disturbance generating device,an actuator that imparts a force on at least the base,a sensor, connected to the base, that senses a total force imparted by the active mount at a respective one of said points and generating a signal representing the total force, anda controller that regulates an impedance error as a function of the force signal from the sensor, the controller generating an input signal based on the regulated impedance error to control the actuator to impart a force on at least the base, said force imparted by the active mount substantially counteracting the disturbance in the base caused by the disturbance generating device.