| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an actuator drive control device capable of smoothly performing actuator start-up operation without unnecessarily damaging a torsion bar part. <P>SOLUTION: When power is turned on, an initial driving current of a prescribed current value is supplied to a drive coil by sweeping its frequency, and a frequency in which a deflection angle of a movable part is maximized based on a detected output of a deflection angle sensor is set (S1 to S3). It is determined whether the frequency whose set deflection angle of the movable part is maximized matches a resonant frequency of the movable part, and the driving current frequency is adjusted so that they match. A driving current value to be supplied to the drive coil is controlled so that the deflection angle of the movable part becomes a target value based on the detected output of the deflection angle sensor while the driving current frequency is being adjusted (S4 to S9). <P>COPYRIGHT: (C)2012,JPO&INPIT |
