Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Vehicle subsystem or accessory control
Reexamination Certificate
2008-04-29
2008-04-29
Black, Thomas (Department: 3661)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Vehicle subsystem or accessory control
C701S041000, C180S443000, C180S446000
Reexamination Certificate
active
07366599
ABSTRACT:
An electric power steering apparatus that performs steering assist by transmitting a driving force produced by an electric motor to a steering mechanism. The apparatus is provided with a current detection circuit for detecting a current flowing through the electric motor to output a motor current detection signal, and a microcomputer for controlling the electric motor on the basis of the motor current detection signal. The current detection circuit has a variable gain amplification circuit, to output the motor current detection signal amplified by the variable gain amplification circuit. The microcomputer has an analog-to-digital conversion port to which the motor current detection signal outputted by the current detection circuit is inputted, to receive the motor current detection signal through the analog-to-digital conversion port. The apparatus is further provided with a gain change section for changing the gain of the variable gain amplification circuit.
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Behncke Christine M
Black Thomas
JTEKT Corporation
Rabin & Berdo P.C.
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