| 摘要 |
PROBLEM TO BE SOLVED: To provide a velocity control apparatus of DC brushelss motor which enables continuous operation with less vibration to a load which various periodically. SOLUTION: An induced voltage detecting section 5 obtains a rotor position detecting signal and sequentially switches a stator coil which is fed from a power feeding coil switching section 6. Moreover, a velocity variation detecting section 7 obtains variation of application voltage to control velocity variation thereof. Next, an average velocity control section 9 corrects, when the obtained average application voltage is exceeding the value predetermined in every operation velocity (frequency or number of rotations), the average application voltage to realize operation by increasing the operation rate higher than the predetermined rate. An application voltage varying section 10 varies the obtained average application voltage of motor and also varies the application voltage of motor to determined the voltage to be applied to the motor. Thereby, a drive signal generating section 11 generates the driven signal of a semiconductor switching element group 3 to driven the motor 4. |
