Endless belt power transmission systems or components – Control for variable input to output speed-ratio – Condition responsive
Patent
1990-12-12
1992-10-20
Luebke, Renee S.
Endless belt power transmission systems or components
Control for variable input to output speed-ratio
Condition responsive
474 11, 474 28, 74866, F16H 6104
Patent
active
051565722
ABSTRACT:
According to a gear shift control system of a continuous transmission of the present invention, when the gear ratio is controlled to a target gear ratio, a deviation between an actual primary pulley speed and the target primary pulley speed is detected. When a feedback-control is carried out to control the actual primary pulley speed to the target primary pulley speed on the basis of the above deviation, the control gain(s) is changed according to the deviation between the actual and the target primary pulley speeds at changing the gear ratio. Thus, the gear ratio is changed at the constant speed and better gear characteristics can be gained. Moreover, the hunting of the actual primary pulley speed occurred around the target speed can be prevented.
REFERENCES:
patent: 4649488 (1987-03-01), Osanai
patent: 4702128 (1987-10-01), Oshiage
patent: 4729103 (1988-03-01), Oshiage
patent: 4875892 (1989-10-01), Sueda
patent: 4893526 (1990-01-01), Tokoro
patent: 4923433 (1990-05-01), Tanaka
patent: 4995283 (1991-02-01), Sawasaki
patent: 4999774 (1991-03-01), Tokoro
patent: 5060768 (1991-10-01), Yamoshita
Luebke Renee S.
Mazda Motor Corporation
Saether F.
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