Electric motor drive unit and actuating device
A motor having: a rotor having a permanent magnet; and a stator having an air core coil, wherein a rotating magnetic field is formed between the permanent magnet and the air core coil by performing an energization control of the air core coil to rotate the rotor, a rotor shaft is made of one of a ma...
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| Format: | Patent |
| Sprache: | eng ; fre ; ger |
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| Zusammenfassung: | A motor having: a rotor having a permanent magnet; and a stator having an air core coil, wherein a rotating magnetic field is formed between the permanent magnet and the air core coil by performing an energization control of the air core coil to rotate the rotor, a rotor shaft is made of one of a magnetic material and a nonmagnetic material, and a part or a portion to form the rotor excluding the permanent magnet and the rotor shaft is made of a nonmagnetic material. |
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