Method for synchronization control of rapid connect awd systems
AssigneeDana Automotive Systems Group, LLC
InventorsSTIJN GOOSSENS, MARK R. J. VERSTEYHE, THOMAS J. VYNCKE
Life of this patent
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Abstract
A method of controlling an all-wheel-drive system connect event including providing a power transmission apparatus having a clutch, a propeller shaft, and a rear drive unit with a clutch pack assembly. The rear drive unit clutch pack is actuated by creating a model of the propeller shaft rotational speed, adapting the model parameters to compensate for temperature and vehicle wheel speed, storing the model, adapting the model utilizing information collected during a previous all-wheel-drive system connect event, and developing a set point for the clutch driving element utilizing the model and a multi-loop control architecture. The power transmission apparatus clutch is then engaged.
Claims8
A method for controlling a vehicle all-wheel-drive system connect event, which comprises:
- providing a portion of a vehicle driveline including:
- a power transmission apparatus having a clutch,
- a propeller shaft,
- said power transmission apparatus selectively driveably coupled with said propeller shaft,
- a rear drive unit including a clutch pack assembly,
- said rear drive unit selectively driveably coupled with said propeller shaft, and
- actuating said rear drive unit clutch pack assembly, where said actuation comprises,
- creating a model of said propeller shaft rotational speed utilizing a torque of said clutch pack assembly and a position of a clutch pack assembly power source,
- adapting a parameter of said model to compensate for dynamic temperature and said vehicle wheel speed,
- storing said model,
- adapting said model utilizing information collected during a previously completed all-wheel-drive system connect event,
- developing a clutch driving element set point utilizing said model of said propeller shaft rotational speed and a multi-loop control architecture,
- engaging said power transmission apparatus clutch.
Dependencies are inferred from the claim text.