| 摘要 |
PROBLEM TO BE SOLVED: To precisely control the rotational speed of a driven device in a power transmission device using a magnetic joint. SOLUTION: In the power transmission device using a magnetic joint, the following correlations are determined: correlation A between the rotational speed of the driven device obtained when the rotational speed is increased and the distance D between the rotating plate and the magnet plate of the magnetic joint; and correlation B between the rotational speed obtained when the rotational speed is reduced and the distance D between the rotating plate and the magnet plate. The distance D is set based on these correlations A, B. The distance D is differently set when the rotational speed of the driven device is increased to target rotational speed E and when the rotational speed of the driven device is reduced to the target rotational speed E. COPYRIGHT: (C)2009,JPO&INPIT
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