Patent ID: 6865466
Filing Date: 2005-03-08
Classification: F16F

Abstract:
1. A vehicle comprising: a vehicle body defining a vehicle passenger compartment; a drivetrain assembly having a rotatable torque-transmitting component; a support member coupling the vehicle body to the drivetrain assembly, the support member forming a transmission path along which vibrations produced by the drivetrain assembly during the operation of the vehicle are transmitted to the vehicle body; a speed sensor for sensing a rotational speed of a component having a speed that is related to a speed of the torque-transmitting component; at least one actuator coupled to the drivetrain assembly; at least one sensor operable for monitoring the vibrations transmitted from the drivetrain assembly and producing a sensor signal in response thereto; and a controller coupled to the at least one actuator and the at least one sensor, the controller receiving the sensor and reference signals, the controller predicting a frequency and amplitude at which the drivetrain assembly vibrates based on the rotational speed of the component and generating an actuator signal in response thereto; wherein the at least one actuator receives the actuator signal and generates a canceling vibration in the drivetrain assembly in response thereto, the canceling vibration having a predetermined frequency and amplitude to substantially cancel-out the vibrations in a predetermined bandwidth that are generated during the operation of the drivetrain assembly to thereby prevent the vibrations generated during the operation of the drivetrain assembly from being transmitted to the vehicle passenger compartment; wherein the controller selectively varies a set of filter weights that are employed to generate the actuator signal based on the sensor signal; and wherein the controller does not generate the actuator signal until the vehicle has, achieved a predetermined vehicle speed wherein said predetermined vehicle speed is at least about 25 miles per hour.