TORQUE TRANSFER DEVICE FOR A MOTOR VEHICLE COMPRISING AN ELECTROMAGNETIC ACTUATION SYSTEM WITH FORCE FEEDBACK CONTROL USING PIEZOELECTRIC RING AND METHOD FOR CONTROLLING A RESPECTIVE ACTUATION SYSTEM

摘要

A torque transfer device (34) for a motor vehicle includes a clutch (50) for transferring torque between first and second shafts (76, 78). An electromagnetic actuator (118, 120) includes an axially moveable armature (120) for applying an application force to the clutch (50). An actuator control system includes a force sensor (130) positioned within a clutch actuation force load path and is operable to output a signal indicative of a force applied to the clutch (50). The control system includes a controller operable to control the electromagnetic actuator (118, 120) to vary the force applied to the clutch (50) based on the force sensor signal.