| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a motor drive device capable of reducing a magnetizing current for changing a magnetic force of a variable magnetic force magnet. <P>SOLUTION: A variable magnetic force memory motor drive device 1 has a variable magnetic force memory motor 2 having a variable magnetic force magnet 41 whose magnetization characteristics Fimag vary. The magnetization characteristics Fimag of the variable magnetic force magnet 41 are specified. A magnetic flux target value ϕ* after magnetization is determined on the basis of a rotation number Nr of the variable magnetic force memory motor 2. An inverter 4 is controlled so as to apply a magnetizing current Id to the variable magnetic force magnet 41 on the basis of the magnetization characteristics Fimag and the magnetic flux target value ϕ*. <P>COPYRIGHT: (C)2013,JPO&INPIT |
