Electrically operated power steering control device

Details Electrically operated power steering control device Electrically operated power steering control device

1994-08-09

1996-04-16

Tyson, Karin L.

Motor vehicles

Compensating devices

36442405, B62D 504

Patent

active

055073590

ABSTRACT:
A signal corresponding to steering torque detected by a torque detector is inputted into both a control device and a torque signal direction determining device 19. Only when the signal directions of both device are coincident, a signal to drive a motor in that direction is outputted from a motor drive circuit. In this case, even when the steering torque is in a dead zone, a signal of a predetermined direction can be outputted from the torque signal direction determining device by a switching signal. Accordingly, in the power steering control device, even when a torque direction signal sent from the direction determining device is in a dead zone, a signal for driving the motor to assist a steering shaft with rotation is made to be outputted in a predetermined direction, so that steering feelings can be improved when a steering wheel is suddenly reversed.

REFERENCES:
patent: 4687976 (1987-08-01), Shimizu
patent: 4736810 (1988-04-01), Morishita et al.
patent: 4869334 (1989-09-01), Marumoto et al.
patent: 4959787 (1990-09-01), Morishita et al.
patent: 5201818 (1993-04-01), Nishimoto
patent: 5253725 (1993-10-01), Nishimoto

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