| 摘要 |
Each of changeable rotors has an identification mark portion thereon. The identification mark portion is detected to generate an identification signal. A microprocessor starts and accelerates rotation of the motor, detects whether the identification signal is detected during acceleration of the rotor, detects whether the identification signal has been detected before the motor reaches a predetermined rotation speed, and controls the driver to rotate the motor at a steady state rotation speed if identification signal has not been detected before rotation of the motor reaches a predetermined rotation speed, to provide detection of the identification mark portion by the identification mark detection means. The microprocessor cyclically detects whether the identification mark portion is detected during rotating the rotor at the steady state rotation speed. The user is informed of error when the control means fails to detect the identification mark portion a predetermined times or within a predetermined interval.
|
