Motor-driven power steering apparatus

Details Motor-driven power steering apparatus Motor-driven power steering apparatus

2008-07-01

2008-07-01

Winner, Tony H. (Department: 3611)

Motor vehicles

Steering gear

With electric power assist

C180S446000

Reexamination Certificate

active

07392879

ABSTRACT:
In a motor-driven power steering apparatus, the main coil winding and auxiliary coil winding are wound around the same slot of a stator core in a parallel manner, a motor drive means has a main driver feeding at least to the main coil windings, and an auxiliary driver feeding only to the auxiliary coil windings, the main driver being actuated so as to be capable of assisting the steering during normal conditions of a control system of an electric motor, and the auxiliary driver is actuated so as to execute an auxiliary assist corresponding to a motor friction torque under abnormal conditions of the control system of the electric motor.

REFERENCES:
patent: 5225729 (1993-07-01), Yang
patent: 5691591 (1997-11-01), McCann
patent: 5866964 (1999-02-01), Li
patent: 6938722 (2005-09-01), Sasaki et al.
patent: 2000-318627 (2000-11-01), None

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