Method for activating a vehicle clutch
AssigneeGETRAG Getriebe- und Zahnradfabrik Hermann Hagenmeyer GmbH & Cie KG
InventorsThorsten Stepper, Joerg Meissner, Ralf Trutschel
Life of this patent
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Abstract
A method for activating a clutch of a vehicle drive train. A controller of an electronic control unit generates an electrical desired-value signal corresponding to a desired pressure with which the clutch is to be acted upon. The control unit receives from a sensor an electrical actual-value signal which is to correspond to an actual pressure with which the clutch is acted upon. The sensor measures the pressure at a measurement location which is connected via a transfer link to an action location at which the clutch is acted upon with a clutch pressure. The actual-value signal passes through a transfer element having a delay property before it is delivered to the controller.
Claims15
Method for activating a clutch of a vehicle drive train, a controller of an electronic control unit generating an electrical desired-value signal corresponding to a desired pressure with which the clutch is to be acted upon, the control unit receiving from a sensor an electrical actual-value signal which is to correspond to an actual pressure with which the clutch is acted upon, the sensor measuring the pressure at a measurement location which is connected via a transfer link to an action location at which the clutch is acted upon with a clutch pressure, wherein the transfer link includes hydraulic components which cannot be ignored in dynamic terms and is arranged between the clutch and the pressure sensor, and the actual-value signal passing through a transfer element having a predetermined delay property before it is delivered to the controller, the predetermined delay property simulating a delay property of the transfer link.
Method for activating a clutch of a vehicle drive train, an electronic control unit generating an electrical desired-value signal corresponding to a desired pressure with which the clutch is to be acted upon, the control unit receiving from a sensor an electrical actual-value signal which is to correspond to an actual pressure with which the clutch is acted upon, wherein the transfer link includes hydraulic components which cannot be ignored in dynamic terms and is arranged between the clutch and the pressure sensor, the actual-value signal passing through a transfer element having a predetermined delay property before it is delivered to a controller of the electronic control unit, the predetermined delay property simulating a delay property of the transfer link, and the desired-value signal being modulated with a higher frequency dither signal in order to minimize hysteresis effects
Dependencies are inferred from the claim text.