Controller for transmission

Details Controller for transmission Controller for transmission

2007-05-29

2007-05-29

Pang, Roger (Department: 3681)

Machine element or mechanism

Gearing

Interchangeably locked

C477S906000

Reexamination Certificate

active

11107729

ABSTRACT:
A controller for a transmission capable of preventing an occurrence of a gear squeak caused by a malfunction of a synchronization mechanism. The voltage determination section24performs a shift operation of a transmission by determining a control input Vin to a shift motor13so as to match an actual position Psc of a coupling sleeve6grasped by an actual position grasping section21with a target position Psc_cmd of the coupling sleeve6set by a target position setting section22. After starting the shift operation of the transmission, it halts the shift operation by detecting a malfunction in the gear position where the shift operation is under execution when the actual position Psc of the coupling sleeve6has reached a malfunction judgment position provided within a range from a balk point to a contact point between the coupling sleeve6and an idle gear7cbefore a difference Esc between the actual position Psc and the target position Psc_cmd of the coupling sleeve6exceeds a given contact judgment value.

REFERENCES:
patent: 6785599 (2004-08-01), Berger et al.
patent: 2003/0064855 (2003-04-01), Tanaka et al.
patent: 2004/0145321 (2004-07-01), Yasui et al.
patent: 11-22816 (1999-01-01), None
patent: 2000-46176 (2000-02-01), None
patent: 2002-71005 (2002-03-01), None

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