Electric power steering apparatus

Details Electric power steering apparatus Electric power steering apparatus

2007-02-13

2007-02-13

Morris, Lesley D. (Department: 3611)

Motor vehicles

Steering gear

With electric power assist

C701S041000

Reexamination Certificate

active

10091711

ABSTRACT:
The power steering apparatus comprises a torque sensor for detecting a steering torque applied to a steering wheel and a steering assist motor which is driven to rotate based on the detected steering torque. The motor is driven under field weakening control in a high-speed rotation area. The motor is a brushless motor comprising a rotor having a plurality of permanent magnets which are respectively fixed in a plurality of recesses provided in a rotor core. With the electric power steering apparatus, a steer-assisting force can be obtained in high-speed steering.

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Japanese Office Action mail May 17, 2005, for Japanese Patent Application No. 2000-318584 (w/ English translation).

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