Actuation system for the clutch of a motor vehicle drive train provided with an automatic transmission, and method for controlling such an actuation system
AssigneeSiemens Aktiengesellschaft
InventorsJoachim Bamberger, Joachim Horn, Peter Michau
Life of this patent
Estimating the term…
Abstract
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.
Claims18
A clutch actuation system for a motor vehicle having an engine connected to a drive train including a clutch, an automatic transmission, and an electrically controlled actuator drive for actuating the clutch, the actuation system comprising:
- a position control circuit having:
- a sensor sensing a position of the clutch and reproducing a position of the clutch with a position measurement signal;
- a controller determining the position of the clutch, said controller connected to said sensor and receiving:
- a setpoint value for the position of the clutch;
- and
- said position measurement signal as an actual position of the clutch;
- and
- a filter connected to said controller and filtering interference oscillations out of said position measurement signal;
- and
- said filter having a stop band adaptively dependent upon a rotational speed of the engine.
In a motor vehicle having an engine connected to a drive train including a clutch, an automatic transmission, and an electrically controlled actuator drive for actuating the clutch, a clutch actuation system comprising:
- a position control circuit having:
- a sensor sensing a position of the clutch and reproducing a position of the clutch with a position measurement signal;
- a controller determining the position of the clutch, said controller connected to said sensor and receiving:
- a setpoint value for the position of the clutch;
- and
- said position measurement signal as an actual position of the clutch;
- and
- a filter connected to said controller and filtering interference oscillations out of said position measurement signal;
- and
- said filter having a stop band adaptively dependent upon a rotational speed of the engine.
A method for controlling an actuation system for an automatic motor vehicle clutch having an electrohydraulic actuator drive for actuating the clutch, which comprises:
- determining a position of the clutch with a position control circuit by:
- feeding to the position control circuit set point values for the position of the clutch and a measured position signal of a sensor representing the position of the clutch as an actual value;
- and
- filtering out interference oscillations from the position signal with a filter having a stop band dependent adaptively upon a rotational speed of a drive engine of the motor vehicle.
Dependencies are inferred from the claim text.