| 摘要 |
A method and apparatus for the setting of the torque transmitted by a friction clutch by means of an actuator chain having an electric motor which effects a displacement of a pressure plate of the friction clutch via a reduction gear and a mechanism for the conversion of the rotary movement of the electric motor. In the method, on the basis of a given torque/angle dependence, a desired angle of rotation of the electric motor or of a link of the actuator chain is determined from the torque to be transmitted by the friction clutch and is set in a setting process by means of a regulator acting on the electric 2. Furthermore, for the compensation of wear inside the friction clutch which results in a variation in the given torque/angle dependence, a calibration process takes place in which the current consumption of the electric motor is measured on the closing of the clutch, a torque corresponding in each case to the measured current is determined via a given torque/current consumption dependence and a first correction angle is determined for the torque/angle dependence from the determined torque and the currently detected angle of rotation, with a variation in the torque/current consumption dependence caused by wear occurring within the actuator chain additionally being taken into account. In accordance with the invention, the number of the setting procedures of the electric motor within a predetermined time interval is determined and is used for the taking into account of the change in the torque/power consumption dependence.
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