| 摘要 |
A drive protection method for a drive circuit (30) used for a direct current motor (10). The direct current motor has a maximum resistance value. The drive protection method comprises the following steps: firstly, providing a control signal and a drive current (S51), the control signal being used for controlling an output level of the drive current, and the drive current being used for driving a direct current motor; next, providing a maximum signal level corresponding to the maximum resistance value (S52); then, comparing a feedback signal fed back by the direct current motor and the maximum signal level (S53); and finally, when a level of the feedback signal exceeds the maximum signal level, starting an operation of the feedback signal to obtain an operation signal, and when a level of the operation signal reaches a closing level, stopping output of the control signal (S54). |
