| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide the motor arrangement by compensating its delaying and driving a motor in the optimum timing, so as to improve efficiency in the wider range of a rotation and noiseless performance. <P>SOLUTION: A motor drive control circuit 2 of this motor arrangement 1 is provided with a phase adjustment circuit 20 inputting the signal of U/V/W phase output from a rotational position signal amplifier 10, 11, 12 to adjust the phase in a manner as advanced by ratio α in accordance with phase adjustment voltage VDEG<SP>+</SP>, VDEG<SP>-</SP>relating to the respective signal, an automatic gain control circuit 13 inputting the output signal with this gain feedback controlled by a drive current in the armature coil of a motor, an FG circuit 21 generating a periodic pulse train from a rotational position signal, and a frequency voltage conversion circuit 22 converting the frequency into voltage corresponding to the frequency of this pulse train to output this voltage as the phase adjustment voltage. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
