| 摘要 |
PROBLEM TO BE SOLVED: To provide a magnetic bearing control device having reduced operating cost and enabling a magnetic bearing to stably support a rotary shaft under such a condition that the rotary shaft swings largely. SOLUTION: The magnetic bearing control device includes a bias current selecting portion 25 that selects a second bias current in a second state after a first state in which the bias current is the constant second bias current different from a first bias current, based on a control current in the first state in which a bias current generating portion 23 generates the constant first bias current. The bias current selecting portion 25 outputs a signal indicating the second bias current to the bias current generating portion 23. COPYRIGHT: (C)2008,JPO&INPIT
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