Invention Grant
- Patent Title: Position detection device of AMB
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Application No.: US14809576Application Date: 2015-07-27
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Publication No.: US09850945B2Publication Date: 2017-12-26
- Inventor: Bertrand Haffray , Olivier Lemarchand
- Applicant: Bertrand Haffray , Olivier Lemarchand
- Applicant Address: FR Saint-Marcel
- Assignee: SKF MAGNETIC MECHATRONICS
- Current Assignee: SKF MAGNETIC MECHATRONICS
- Current Assignee Address: FR Saint-Marcel
- Agency: SKF USA Inc. Patent Dept.
- Agent Bryan Peckjian
- Priority: EP14306208 20140728
- Main IPC: F16C32/04
- IPC: F16C32/04 ; G01D5/20 ; G01D5/22

Abstract:
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.
Public/Granted literature
- US20160025518A1 POSITION DETECTION DEVICE OF AMB Public/Granted day:2016-01-28
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