Motor-driven power steering system for vehicles

Details Motor-driven power steering system for vehicles Motor-driven power steering system for vehicles

1987-04-07

1988-07-05

Love, John J.

Motor vehicles

Compensating devices

180142, B62D 504

Patent

active

047548290

ABSTRACT:
A motor-driven power steering system for an automotive vehicle has a drive control device for applying a driving signal to an electric motor for generating assistive torque to be applied to an output shaft, based on output signals from a torque detecting mechanism which detects a steering torque acting on an input shaft. The system detects a freely returning state of a steering wheel to dampen the electric motor when prescribed conditions are met. The range of the prescribed conditions is widened as the speed of travel of the automotive vehicle is increased.

REFERENCES:
patent: 4538698 (1986-12-01), Hashimoto
patent: 4629952 (1987-01-01), Shimizu
patent: 4639651 (1987-03-01), Shimizu
patent: 4651840 (1987-03-01), Shimizu
patent: 4656409 (1987-04-01), Shimizu
patent: 4657103 (1987-04-01), Shimizu
patent: 4660669 (1987-07-01), Shimizu
patent: 4671371 (1987-06-01), Shimizu
patent: 4671372 (1987-06-01), Shimizu
patent: 4681181 (1987-07-01), Shimizu
patent: 4686433 (1987-08-01), Shimizu
patent: 4688655 (1987-08-01), Shimizu

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