| 摘要 |
<P>PROBLEM TO BE SOLVED: To shorten the time elapsing before a DC holeless motor stops completely after a state immediately before stoppage with regard to a motor controller and a motor control method in which a rotor can be stopped forcibly. <P>SOLUTION: In the motor controller performing drive control of a DC holeless motor (DCM1) having three-phase coils 5U, 5V and 5W of phase U, phase V and phase W using a controller 10, the controller 10 is provided with a means 14 for applying short brake when a rotation stop instruction is input, a first detection means 15 for detecting the reverse torque disclosure time, a means 16 for supplying a current to each coil 5U, 5V, 5W such that a reverse torque is generated when the reverse torque disclosure time is detected, a second detection means 17 for detecting whether the DCM1 is in a state immediately before rotation stop or not, and a means 18 for stopping rotation of the DCM1 forcibly when the state immediately before rotation stop is detected. <P>COPYRIGHT: (C)2007,JPO&INPIT |
