发明名称 |
POSITION DETECTION DEVICE OF AMB |
摘要 |
A position detection device of active magnetic bearings (AMB's) maintaining the position of a rotating shaft and comprising two sensing inductance coils, the position detection device comprising a programmable digital component for generating a 25 KHz square waveform signal, a current amplifier receiving the 25 KHz square waveform signal and injecting two identical control currents in the two sensing inductance coils, a differential amplifier for amplifying a voltage difference between the resulting voltages in the two sensing inductance coils and, depending on the displacement of the rotating shaft, an analog to digital (A/D) converter for delivering a position value from the voltage difference. |
申请公布号 |
US2016025518(A1) |
申请公布日期 |
2016.01.28 |
申请号 |
US201514809576 |
申请日期 |
2015.07.27 |
申请人 |
HAFFRAY Bertrand;LEMARCHAND Olivier |
发明人 |
HAFFRAY Bertrand;LEMARCHAND Olivier |
分类号 |
G01D5/20 |
主分类号 |
G01D5/20 |
代理机构 |
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代理人 |
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主权项 |
1. A position detection device of active magnetic bearings maintaining the position of a rotating shaft and comprising two sensing inductance coils, wherein the position detection device further comprises:
a programmable digital component for generating a 25 KHz square waveform signal, a current amplifier receiving the 25 KHz square waveform signal and injecting two identical control currents in the two sensing inductance coils, a differential amplifier for amplifying a voltage difference between the resulting voltages in the two sensing inductance coils and depending on the displacement of the rotating shaft, and an analog to digital (A/D) converter for delivering a position value from the voltage difference. |
地址 |
Saint-Etienne-du-Rouvray FR |