Motor vehicles – Steering gear – With electric power assist
Reexamination Certificate
2005-04-05
2005-04-05
Boehler, Anne Marie (Department: 3611)
Motor vehicles
Steering gear
With electric power assist
C701S041000
Reexamination Certificate
active
06874594
ABSTRACT:
To provide a controller for an electric power steering system capable of balancing a steering assist force by correcting an offset and improving the steering feeling. A controller for an electric power steering system having motor driving means for driving a motor for electric power steering and motor current detecting means for detecting a current running through the motor is used in which the motor-driving means realizes a motor stop state in which no current runs through the motor under a non-energized state, uses a motor current detection signal under the motor stop state as the offset value of the motor current detecting means, and automatically corrects the offset of the motor current detecting means in accordance with the offset value.
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Itakura Yusuke
Koiwai Hisayoshi
Boehler Anne Marie
NSK Ltd.
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