Method for estimating clutch engagement parameters in a...

Details Method for estimating clutch engagement parameters in a... Method for estimating clutch engagement parameters in a...

2008-02-22

2009-10-13

Hellner, Mark (Department: 3663)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Clutch control

C192S003510

Reexamination Certificate

active

07603219

ABSTRACT:
A method is disclosed for computing clutch engagement characteristics of a friction clutch system in a vehicle powertrain. A dynamic model of the system is used under conditions that cause clutch slipping. Algebraic equations defining a functional relationship between clutch torque and an engagement angle have characteristic parameters that are estimated using a non-linear least squares technique. The non-linear least squares technique repetitively minimizes the difference between a measured clutch output speed and a clutch output speed from the system dynamic model for the same inputs until a small insignificant error is reached. Parameter estimates are used to update each engagement characteristic.

REFERENCES:
patent: 5871419 (1999-02-01), Amendt
patent: 6470253 (2002-10-01), Salecker et al.
patent: 6480777 (2002-11-01), Sato et al.
patent: 7158873 (2007-01-01), Eich et al.
patent: 7258648 (2007-08-01), Smith et al.
patent: 2005/0130806 (2005-06-01), Lopez
patent: 19571455 (1999-05-01), None
patent: 1437520 (2004-07-01), None
patent: 2854848 (2004-11-01), None
K. Madsen, et al., “Methods for Non-Linear Least Squares Problems”, 2ndEdition, Apr. 2004, pp. 1-30.
International Search Report and Written Opinion of the International Searching Authority for PCT/1B2007/00l644 dated Nov. 27, 2007.

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