Invention Grant
- Patent Title: Controlling a motor with two or more hall sensors
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Application No.: US14975145Application Date: 2015-12-18
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Publication No.: US09915709B2Publication Date: 2018-03-13
- Inventor: Raymond Liu , Estella Chung
- Applicant: Woodward, Inc.
- Applicant Address: US CO Fort Collins
- Assignee: Woodward, Inc.
- Current Assignee: Woodward, Inc.
- Current Assignee Address: US CO Fort Collins
- Agency: Fish & Richardson P.C.
- Main IPC: H02K29/08
- IPC: H02K29/08 ; G01R33/07 ; G01R23/00 ; H02P6/16 ; H02P6/00 ; H02P6/12 ; H02P29/032

Abstract:
A motor system includes a motor including two Hall sensors configured to output binary values, and a controller configured to control the motor. The two Hall sensors are placed 120 or 60 electrical degrees apart. The controller is operable to monitor output signals of the two Hall sensors and to determine a third Hall sensor output binary value. The controller is operable to fulfill the commanded requirements to operate in a servo system, by controlling commutation of a drive current into the motor, and by keeping track of the motor rotor position based on the third generated signal and the outputs of the two Hall sensors.
Public/Granted literature
- US20160105134A1 Controlling a Motor with Two or More Hall Sensors Public/Granted day:2016-04-14
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