Power steering device having electrically driven pump

Details Power steering device having electrically driven pump Power steering device having electrically driven pump

1992-11-19

1994-11-22

Wysocki, Jonathan

Electricity: motive power systems

Motor-reversing

Automatic and/or with time-delay means

180 791, B62D 504

Patent

active

053672356

ABSTRACT:
A power steering device having a pump to be driven by an electric motor and adapted to assist in steering a vehicle with hydraulic pressure produced by the pump. The device includes a controller for interrupting application of voltage to the motor for a predetermined period of time, calculating the number of revolutions of the motor based on the resulting counter electromotive force between the terminals of the motor and controlling the flow rate of the pump based on the calculated number of revolutions.

REFERENCES:
patent: Re30492 (1981-01-01), Blakeslee
patent: 4532567 (1985-07-01), Kade
patent: 4658584 (1987-04-01), Suzuki et al.
patent: 4837692 (1989-06-01), Shimizu
patent: 4986380 (1991-01-01), Morishita
patent: 5000278 (1991-03-01), Morishita
patent: 5198981 (1993-03-01), Collier-Hallman et al.

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