Siemens Aktiengesellschaft

Peter Michau

Joachim Bamberger

Joachim Horn

Stephan Pindl

Ernst Nock

A clutch actuation system includes an actuator drive for actuating the clutch, and a position control circuit having a controller determining a position of the clutch and to which a position setpoint value is fed and a measurement signal, representing the position, of a sensor is fed as an actual value. A filter that filters interference oscillations out of the position signal is inserted into the position control circuit. The stop band of the filter depends adaptively on the rotational speed of the drive engine of the motor vehicle, in particular, the stop band corresponds to the speed.

Actuation system for the clutch of a motor vehicle drive train provided with an automatic transmission, and method for controlling such an actuation system

In a method of controlling a transmission ratio of a continuously variable toroidal transmission, a holding force for an intermediate roller is pilot-controlled as a function of the torques acting on the toroidal disks and of the pivoted position of the intermediate roller, and/or the adjustment path of the intermediate roller is fed back statically or dynamically into a control circuit.

Method of controlling the transmission ratio of a continuously variable toroidal transmission

A motor vehicle drive and a method for controlling a motor vehicle drive in which control signals, by reference to which a set position is set, are transmitted from a superordinate controller to a subordinate clutch position controller. An actual position signal is transmitted from the position controller to the controller. A feedback message is transmitted from the controller to the position controller via an efficient interface, and the controlling quality is thus optimized by the position controller in accordance with the respective travel situation.

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Wuppertal, Germany

Peter Michau