| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a controller for brushless motor which can prevent the occurrence of abnormal sound at the time of controlling a motor current by updating the applied voltage to a coil, according to the rotational position of a rotor, the target current, and the actual current flowing to a coil. <P>SOLUTION: This controller updates the applied voltage to the coil, according to the applied voltage to the coil that is calculated according to the rotational position of the rotor, the target current, and the actual current flowing to the coil, so as to generate the torque of the rotor by the change of the field generated by the coil (S7). The update cycle of the applied voltage is made shorter than the calculation cycle of the applied voltage geared to the rotational position of the rotor (S8 and S9). <P>COPYRIGHT: (C)2006,JPO&NCIPI |
