| 摘要 |
A drum washing machine includes a drum ( 7 ) accommodating laundry and having a substantially horizontal axis of rotation, an electric motor ( 14 ) rotating the drum ( 7 ), current detecting means ( 47 ) for detecting an electric current flowing through the motor ( 14 ), torque control means ( 53 ) for vector-controlling the motor ( 14 ) on the basis of the current detected by the current detecting means ( 47 ) so that torque developed by the motor ( 14 ) becomes optimum at least in each of a wash operation and a dehydration operation, and laundry weight estimating means ( 54, 61 ) or accelerating the motor ( 14 ) with a maximum output torque developed when determining that a rotational speed of the motor ( 14 ) is between a first rotational speed at which the laundry is assumed to start falling from an uppermost part of an inner periphery of the drum ( 7 ) when the rotational speed of the motor ( 14 ) is reduced from a high speed side and a second rotational speed at which the laundry in the drum is assumed to start sticking to an uppermost part of the inner periphery of the drum ( 7 ), thereby estimating a laundry weight according to a q-axis current value in the vector control during an accelerating period.
|
