Motor vehicles – Compensating devices
Patent
1990-11-14
1992-09-08
Hill, Mitchell J.
Motor vehicles
Compensating devices
180142, 280 91, 36442405, B62D 504
Patent
active
051450224
ABSTRACT:
The present invention provides a rear wheel steering system for a vehicle comprising a controller to which driving information is supplied, and a rear wheel steering mechanism driven through a reduction mechanism by a DC electric motor which is rotationally controlled by the controller. The rotational amount of the motor is detected by a motor rotation sensor, and the motor can be stopped by an electromagnetic brake. For accurately stopping the motor at a target rotational position corresponding to a target pivotal angle for the rear wheels, the controller first interrupts the drive current to the motor when the detected rotational amount reaches a first value short of the target rotational position, and then actuates the brake when the detected rotational amount reaches a second value immediately short of the target rotational position.
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patent: 4538698 (1985-09-01), Hashimoto et al.
patent: 4869335 (1989-09-01), Takahashi
patent: 4943074 (1990-07-01), Kido
patent: 4949984 (1990-08-01), Uemura et al.
patent: 4953650 (1990-09-01), Ohmura
patent: 4956590 (1990-09-01), Phillips
patent: 4987963 (1991-01-01), Oslapas et al.
patent: 5007494 (1991-04-01), Ohmura et al.
Daihatsu Motor Co. Ltd.
Eilberg William H.
Hill Mitchell J.
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