| 摘要 |
The system has a vacuum pump including a brushless, multi-phase, synchronous motor (3) with a permanently magnetically excited rotor (10). A control unit (2) is provided for controlling a vacuum pump. The control unit includes a drive microcontroller (5) that controls a final stage (6). The drive microcontroller turns off before a threshold rotational speed is reached. A microcontroller (7) monitors the rotational speed of the motor and turns off the final stage, when the rotational speed of the motor exceeds the maximum allowable rotational speed of the motor. An independent claim is also included for a method of controlling operation of a brushless, multi-phase, synchronous motor with a permanently magnetically excited rotor, of a vacuum pump. |
