发明申请
US20080297095A1 Drive control circuit for polyphase motor capable of reducing variation among armature currents of respective phases, and spindle apparatus using the same
有权
用于多相电动机的驱动控制电路，能够减少各相的电枢电流之间的变化，以及使用该电动机的主轴装置
- 专利标题： Drive control circuit for polyphase motor capable of reducing variation among armature currents of respective phases, and spindle apparatus using the same
- 专利标题（中）： 用于多相电动机的驱动控制电路，能够减少各相的电枢电流之间的变化，以及使用该电动机的主轴装置
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申请号： US12153930申请日： 2008-05-28
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公开(公告)号： US20080297095A1公开(公告)日： 2008-12-04
- 发明人: Kazuyuki Aono , Akio Nakajima
- 申请人： Kazuyuki Aono , Akio Nakajima
- 专利权人： NTN CORPORATION
- 当前专利权人： NTN CORPORATION
- 优先权： JP2007-148152(P) 20070604
- 主分类号： H02P25/02
- IPC分类号： H02P25/02
摘要：
Even when there is some degree of variation in the characteristics among components constituting a polyphase motor and a driving circuit therefor, current control signals of respective phases being input to the drive circuit have their amplitude finely adjusted by an amplitude control circuit, so that amplitude is uniform among armature currents of respective phases that are ultimately output from the drive circuit. The amplitude adjusting circuit is configured by gain variable amplifiers, for example. Thus, rotation fluctuation and vibration of the polyphase motor can be reduced.
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