| 摘要 |
<p>[Problem] An object of the present invention is to provide a control apparatus for an electric power steering apparatus that suppresses disaccord between the dead time and the dead time compensation value by correcting the dead time compensation value based on the temperature of the switching element and reduces the distortion of the motor current and the occurrence of the torque ripple, and simultaneously reduces the occurrence of noises by performing a dead time compensation corresponding to steering conditions and obtains good steering performances even under an environment from low temperature to high temperature. [Means for solving the problem] The present invention comprises a dead time characteristic section that calculates a dead time characteristic value; a steering status determining section that determines a steering status; a gain section that varies a gain of the dead time characteristic value in accordance with a determination of the steering status; a polarity determining section that switches polarity determining methods in accordance with the determination of the steering status and determines a polarity on the basis of a detected current of a motor, a current command value or a model current; a temperature sensor that detects a temperature of an inverter; a dead time temperature correction value calculating section that calculates a dead time temperature correction value corresponding to the temperature; and a calculation processing section that calculates and processes the dead time temperature correction value with respect to a dead time compensation value with polarity based on an output of the gain section and outputs a dead time compensation value.</p> |
