Invention Grant
- Patent Title: Rotary position sensor
- Patent Title (中): 旋转位置传感器
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Application No.: US13469234Application Date: 2012-05-11
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Publication No.: US08947077B2Publication Date: 2015-02-03
- Inventor: Joong K. Lee , Lingmin Shao , Ryan Elliott
- Applicant: Joong K. Lee , Lingmin Shao , Ryan Elliott
- Applicant Address: US DE Wilmington
- Assignee: KSR IP Holdings LLC.
- Current Assignee: KSR IP Holdings LLC.
- Current Assignee Address: US DE Wilmington
- Agency: Gifford, Krass, Sprinkle, Anderson & Citkowski, P.C.
- Main IPC: G01B7/30
- IPC: G01B7/30 ; G01D5/20

Abstract:
A rotary position sensor having a transmitter coil excited by a high frequency signal source. A first and second receiver coil, each having at least two oppositely wound loops, are rotatably positioned electrically 90 degrees relative to each other. The receiver coils are positioned so as to be inductively coupled with the transmitter coil while a coupler constructed of an electrically conductive material is rotatably positioned over and inductively coupled with the first and second receiver coils. The outputs from the first and second receiver coils are coupled through a high pass filter and a low pass filter, respectively, thus creating a 90° phase shift in the resultant signals. These signals are summed together and coupled as an input signal to a PWM circuit together with a signal from the transmitter coil.
Public/Granted literature
- US20120293166A1 ROTARY POSITION SENSOR Public/Granted day:2012-11-22
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