A TORQUE MEASURING SYSTEM AND A METHOD THEREFORE

摘要

The invention relates to a torque measuring system in a vehicle transmission comprising a clutch assembly having a two part, rotatable torque transmitting member, the two parts of said member being angularly movable relative to one another against the compression of at least one damper spring pack (114), and an actuator (121) with a non rotatable cylinder for controlling the clutch. A device for radiating and receiving wave energy is arranged to irradiate said damper spring pack in order to receive a reflected modulation signal proportional to the current resonance frequency of said damper spring pack, and where said modulation signal is arranged to be converted to a torque value by a signal processing device, which torque value corresponds to the actual torque over said clutch.