Electric power steering apparatus

Details Electric power steering apparatus Electric power steering apparatus

1994-07-25

1996-01-02

Hurley, Kevin T.

Motor vehicles

Compensating devices

36442405, B62D 504

Patent

active

054800005

ABSTRACT:
In an electric power steering apparatus, in which an electric motor for assisting the steering torque is adapted to be driven by PWM wave, and the duty of the PWM wave is adapted to be under the feedback control in time series by detecting the driving current of the motor, when the direction of the target current in this time for the feedback control is different from that of the former time, or when the detected driving current in the motor is zero, the former target voltage of the motor for the feedback control is forcibly set to the voltage value decided in reference to the minimum duty of the PWM wave for driving the motor.

REFERENCES:
patent: 4657103 (1987-04-01), Shimizu
patent: 4681181 (1987-07-01), Shimizu
patent: 4688655 (1987-08-01), Shimizu
patent: 4875539 (1989-10-01), Abukawa et al.
patent: 5150021 (1992-09-01), Kamono et al.
patent: 5202830 (1993-04-01), Tsurumiya et al.
patent: 5299648 (1994-04-01), Watanabe et al.
patent: 5303156 (1994-04-01), Matsuoka et al.

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