| 摘要 |
<P>PROBLEM TO BE SOLVED: To easily and surely calculate a motor constant of a linear electromagnetic actuator in a controller of an electric vehicle equipped with the linear electromagnetic actuator. <P>SOLUTION: The controller includes: a power converter 5 for supplying AC power to a primary member of the linear electromagnetic actuator 4 at a variable voltage and a variable frequency; a voltage instruction means 8 for instructing an output voltage supplied to the linear electromagnetic actuator by the power converter; a current detection means 7 for detecting information on a current flowing between the power converter and the linear electromagnetic actuator; and a motor constant calculation means for calculating the motor constant of the linear electromagnetic actuator from the voltage information Vu obtained by the voltage instruction means and the current information Iu detected by the current detection means when the electric vehicle is deactivated by a deactivation signal. <P>COPYRIGHT: (C)2008,JPO&INPIT |
