Control device for power steering apparatus

Details Control device for power steering apparatus Control device for power steering apparatus

1986-10-23

1987-10-27

Love, John J.

Motor vehicles

Including one or more ski-like or runner members

With at least one surface-engaging propulsion element

180133, B62D 506

Patent

active

047023341

ABSTRACT:
In a control device for a power steering apparatus of which steering force is controlled on the basis of a control signal produced in accordance with a vehicle speed signal, the control device comprises means which outputs an engine rotation speed signal corresponding to an engine rotation speed, change relaxation means for relaxing changes in the engine rotation speed signal, and a switchover circuit which outputs an output signal of the change relaxation means instead of the vehicle speed signal when the vehicle speed signal is lost. Accordingly, even if a vehicle speed sensor is out of order for any reason, the power steering is carried out by the engine rotation speed signal, resulting small change of the steering force. Thus, this can protect the vehicle driver from dangerous conditions.

REFERENCES:
patent: 4476529 (1984-10-01), Nakamura et al.
patent: 4518055 (1985-05-01), Yagi et al.
patent: 4549627 (1985-10-01), Takeshima

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