Method and apparatus for fault-tolerant transmission gear...

Details Method and apparatus for fault-tolerant transmission gear... Method and apparatus for fault-tolerant transmission gear...

2006-08-04

2009-08-04

Pang, Roger (Department: 3655)

Machine element or mechanism

Gearing

Interchangeably locked

C477S906000, C340S456000

Reexamination Certificate

active

07568402

ABSTRACT:
A fault-tolerant gear selector lever position apparatus is described. Included is a first sensor operable to detect each position, and a second sensor operable to detect subsets of the positions. A first controller monitors the second sensor, and a second controller monitors the first sensor. The second controller identifies and communicates one of the positions to the first controller, and the first controller validates the position and communicates the position to a control system. The lever is applicable to a power transmission device. Each sensor preferably comprises digital encoding sensor; the first sensor generates a unique signal for each position, and the second sensor generates a unique signal for each subset of the positions, preferably a unique signal for each of Park, Reverse, Neutral, and Forward Drive. The controllers identify faults in the sensors, and communicate and act accordingly.

REFERENCES:
patent: 5561416 (1996-10-01), Marshall et al.
patent: 6205874 (2001-03-01), Kupper et al.
patent: 6550351 (2003-04-01), O'Reilly et al.
patent: 6773369 (2004-08-01), Altenkirch et al.
patent: 2004/0079181 (2004-04-01), von Haeften
patent: 2818725 (2002-06-01), None
English Translation of DE10159861 (German equivalent of FR2818725), Dec. 3, 2008, http://epo.worldlingo.com/wl/epo/epo.html.

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