| 摘要 |
In a power steering apparatus is disclosed, in which a current control outputs a voltage to be applied to an electric motor so as to set a current flowing in an electric motor to a predetermined current value by feedback of a motor current detected by a motor current detection circuit, while a motor application voltage indicator indicates a voltage to be applied to the electric motor. And a motor application voltage selector selects the lower of the voltage outputted by the current control and the voltage indicated by the motor application voltage indicator as the voltage to be applied to the electric motor and supplies the selected voltage to a motor drive circuit for driving the electric motor. Hence the apparatus needs no motor drive element of large capacity, thereby enabling to minify and reduce production cost.
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