Motor Drive Circuit

摘要

A drive circuit for an electric motor, has a driving source unit, configured to generate a driving source signal and a driving unit, connected to the motor and configured to drive the motor according to the driving source signal. A sensing unit senses the actual speed of the motor. A control unit stops operation of the motor when the actual speed of the motor falls below a predetermined level. A timing unit counts a predetermined time period from the time the motor stops operation. The motor resumes operation at the end of the predetermined time period.

主权项

1. A drive circuit for an electric motor, comprising:
a driving source unit, configured to generate a driving source signal; a driving unit, connected to the motor and configured to drive the motor according to the driving source signal; a sensing unit, configured to sense an actual rotational speed of the motor; a control unit, connected to the sensing unit to receive the actual rotational speed and configured to cause the motor to stop operating by causing the driving unit to stop driving the motor when the actual rotational speed falls below a predetermined rotational speed; and a timing unit, connected to the control unit and configured to start timing a predetermined time period when the control unit causes the motor to stop operating, wherein the control unit causes the motor, which does not operate during the predetermined time period, to resume operating by controlling the driving unit to drive the motor, when the predetermined time period expires.