| 摘要 |
Disclosed is a method for detecting an unbalanced drum in a drum type washing machine. In the method, deviation of the number of revolutions is calculated, and unbalance of the drum is judged when the deviation is greater than a predetermined unbalance criterion. The deviation is the difference between maximum and minimum numbers of revolutions. The calculation of deviation and the judgement of unbalance are repeatedly performed. Pulse signals of a tachometer need not be accumulated over a long period of time, and an additional unbalance detection program need not be provided and performed, whereby the unbalanced drum can be detected in a short period of time.
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