| 摘要 |
PURPOSE:To effectively detect the abnormal rotation by detecting the malfunction when information of position change is not obtained by position detecting means for detecting the positional relation between a rotor and a stator irrespective of the executed rotating process. CONSTITUTION:Position detecting signals SW1-SW3 from position detecting means for detecting the positional relation between a stator and a rotor are input to a microcomputer 6. The microcomputer 6 outputs a drive signal to transistors Q1-Q3 on the basis of the inputs of the signals SW1-SW3 to rotate a motor. When the signals SW1-SW3 are not obtained even if a drive signal is output, the microcomputer 6 judges that the motor or a load is abnormal to all turn OFF the drive signals. |
