Method and apparatus for controlling shift force in an automated

Details Method and apparatus for controlling shift force in an automated Method and apparatus for controlling shift force in an automated

1993-08-11

1996-01-02

Shoop, Jr., William M.

Electricity: motive power systems

Positional servo systems

With particular 'error-detecting' means

318610, 318632, G05F 110

Patent

active

054811708

ABSTRACT:
The shift quality of an automated mechanical transmission is improved and transmission wear is reduced by controlling the armature current of the motor driving the transmission shifting mechanism. The current is monitored by a microcontroller to determine if the shifting mechanism has encountered a snag or has stalled during a shift operation. The microcontroller is programmed to control the duty cycle of a pulse width modulated (PWM) voltage signal, applied to the motor, in accordance with an algorithm which provides both proportional and derivative control of the error between the measured current and a target current. The rapid reduction in current spikes through PWM control reduces the force applied to the shifting mechanism and thus the sliding clutch and transmission gearing.

REFERENCES:
patent: 3619755 (1971-11-01), Munro et al.
patent: 3896356 (1975-07-01), Hoffman et al.
patent: 4070609 (1978-01-01), Barrett et al.
patent: 4081727 (1978-03-01), Green
patent: 4160488 (1979-07-01), Blakeslee
patent: 4856360 (1989-04-01), Yoshimura et al.
patent: 4911031 (1990-03-01), Yoshimura et al.
patent: 5196774 (1993-03-01), Baciak et al.
patent: 5219391 (1993-06-01), Edelen
patent: 5281902 (1994-01-01), Edelen et al.
patent: 5305240 (1994-04-01), Davis

Affiliated with

Also associated with

Rating

Method and apparatus for controlling shift force in an automated does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for controlling shift force in an automated, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for controlling shift force in an automated will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-237736