发明授权
- 专利标题： Non-intrusive speed sensing for induction motors
- 专利标题（中）： 异步电动机非侵入式速度检测
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申请号： US09184687申请日： 1998-11-02
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公开(公告)号： US06208132B1公开(公告)日： 2001-03-27
- 发明人: Gerald Burt Kliman , John Andrew Mallick
- 申请人： Gerald Burt Kliman , John Andrew Mallick
- 主分类号： G01P348
- IPC分类号： G01P348
摘要：
A sensing coil affixed to the outside of an induction motor housing uses flux signals from the motor to measure motor speed. In particular, components of the rotor current are measured and compared to analysis from stator fundamentals and sidebands to determine the true rotor frequency which can then be used to determine the motor speed. A shield and/or a compensating coil can optionally be used to filter out extraneous signal noise.
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