| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a motor controller capable of stable switching between an intermittent energization drive system and a 180° energization drive system. <P>SOLUTION: This motor controller includes: an inverter circuit 5 for supplying electric power to a motor 6; a 180°energization drive section 9 for controlling the inverter circuit 5 through a PWM preparation/each phase distribution section 11 for drive of the motor 6 by the 180° energization drive system; an intermittent conduction drive section 8 to control the inverter circuit 5 through the PWM preparation/each phase distribution section 11 for drive of the motor 6 by the 180° energization drive system; a drive system selection section 10 for selecting either of the drive systems; and a rotational-speed control PMW duty/modulation rate calculation section 12 for correcting a drive signal immediately before switching by one drive system to obtain a drive signal immediately after switching by the other drive system at the time of switching from one drive system to the other drive system. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
