| 摘要 |
PROBLEM TO BE SOLVED: To provide a motor system using a direct drive motor which can detect the rotational angle of a rotor with accuracy and further can secure the maintenance while avoiding atmospheric pollution. SOLUTION: Since the outer rotor (the second outer rotor 21' and a ring-shaped member 23') of the direct drive motor D2 is supported to the outer rotor (the first outer rotor 21 and the cylindrical member 23) of another direct drive motor D1 by a bearing 19', the bearing 19' having supported such an outer rotor can be exposed by removing the outer rotor of the direct drive motor D2, and next the bearing 19 having supported such an outer rotor can be exposed by removing the outer rotor of the direct drive motor D1, thus their inspection or removal can be performed easily, so the maintenance improves. Furthermore, it will do to merely remove only the outer rotor positioned outside the bulkhead 13, so there is no need to remove the bulkhead structure, and upon reassembly, leakage check, etc. become needless, and the assembability improves. COPYRIGHT: (C)2006,JPO&NCIPI
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