Electric power steering apparatus

Details Electric power steering apparatus Electric power steering apparatus

2007-03-13

2007-03-13

Boehler, Anne Marie (Department: 3611)

Motor vehicles

Steering gear

With electric power assist

C701S041000

Reexamination Certificate

active

10439606

ABSTRACT:
An electric power steering apparatus is provided, which has a first device for detection of steering torque, a motor, a motor drive unit, a second device for determining a target current based upon at least a signal of steering torque, a third device for detection of a motor current, and a control unit for generating a signal for motor drive based upon at least a deviation between the target current and motor current and transmitting the signal for motor drive to the motor drive unit. The apparatus has a feature that the control unit includes a fourth device for weakening a magnetic field within the motor according to the deviation or a value computed based upon the deviation.

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patent: 102 06 955 (2003-02-01), None
patent: 1 241 073 (2002-09-01), None
patent: 2000-279000 (2000-10-01), None

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