Electric power steering equipment

Details Electric power steering equipment Electric power steering equipment

1984-06-29

1987-06-23

Miller, Carl Stuart

Motor vehicles

Including one or more ski-like or runner members

With at least one surface-engaging propulsion element

180 79, B62D 506

Patent

active

046745882

ABSTRACT:
Improved electric power steering equipment includes an electric motor as a driving device therefor wherein wetness detecting means is adapted to minimize reduction in the torque necessary for the steering operation to thereby improve the steering feeling of a driver. The wetness detecting means detects the degree of wetness of a vehicle or a road surface adjacent to the vehicle. The equipment according to the present invention also includes a control means for driving the electric motor in response to the steering torque detected by a torque detecting means and the degree of wetness detected by the wetness detecting means. Thus, wetness on a road is directly or indirectly detected by the wetness detecting means and based on the detecting results thereof, additional torque necessary for the steering operation is controlled, and therefore a driver can drive a vehicle with a relatively constant steering feeling at all times, regardless of various running states of the vehicle.

REFERENCES:
patent: 4392540 (1983-07-01), Michio
patent: 4448275 (1984-05-01), Kitagawa
patent: 4527653 (1985-07-01), Agarwal
patent: 4531082 (1985-07-01), Yoshinada
patent: 4538698 (1985-09-01), Hashimoto

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