| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a motor controller capable of preventing a driving circuit from being broken down by an induction voltage of an uncontrolled motor rotated by an external force. <P>SOLUTION: A motor controller 1 includes: a driving circuit 10 for driving a motor 21; a relay 7 disposed between a battery 3 and the driving circuit 10, for turning itself on to supply electric current from the battery 3 to the driving circuit 10 and off to shut down the electric current; a rotation frequency detection part 6 for detecting the rotation frequency of the motor 21; and a control part 4 for controlling the motor 21 by operating the driving circuit 10. The control part 4 turns off a contact point 7b of the relay 7 when the rotation frequency of the motor 21 detected by the rotation frequency detection part 6 is equal to or more than the prescribed value while the electric motor 21 is uncontrolled. <P>COPYRIGHT: (C)2013,JPO&INPIT |
