发明名称 |
Motor controller and drum washing machine |
摘要 |
A motor controller including a vector controller that controls a permanent magnet motor including a rotor being provided with a permanent magnet having a coercivity low enough to allow modification in amount of magnetization and that executes a vector control by detecting current flowing at the permanent magnet motor; a speed/position detector that detects a rotational speed and a rotational position of the permanent magnet motor; a magnetization controller that increases or decreases the magnetization of the permanent magnet depending on the rotational position of the permanent magnet motor through adjustment in status of the magnetization of the permanent magnet by way of armature counteraction; and a demagnetization detector that detects a decrease in the magnetization of the permanent magnet magnetized by the magnetization controller during operation of the permanent magnet motor. |
申请公布号 |
US8327670(B2) |
申请公布日期 |
2012.12.11 |
申请号 |
US20090635130 |
申请日期 |
2009.12.10 |
申请人 |
MAEKAWA SARI;HOSOITO TSUYOSHI;KABUSHIKI KAISHA TOSHIBA;TOSHIBA CONSUMER ELECTRONICS HOLDINGS CORPORATION;TOSHIBA HOME APPLIANCES CORPORATION |
发明人 |
MAEKAWA SARI;HOSOITO TSUYOSHI |
分类号 |
D06F33/00 |
主分类号 |
D06F33/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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