Invention Grant
- Patent Title: Method of detecting the angular position of an electric motor, corresponding circuit and electric motor
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Application No.: US16685544Application Date: 2019-11-15
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Publication No.: US11005397B2Publication Date: 2021-05-11
- Inventor: Michele Boscolo Berto
- Applicant: STMicroelectronics S.r.l.
- Applicant Address: IT Agrate Brianza
- Assignee: STMicroelectronics S.r.l.
- Current Assignee: STMicroelectronics S.r.l.
- Current Assignee Address: IT Agrate Brianza
- Agency: Slater Matsil, LLP
- Priority: IT102018000011061 20181213
- Main IPC: H02P6/185
- IPC: H02P6/185

Abstract:
A method for detecting the angular position of an electric motor includes: applying a first drive signal with a first polarity between first and second drive terminals that are coupled to respective stator windings of the electric motor; sensing at a third drive terminal a first signal resulting from the application of the first drive signal; applying a second drive signal with a second polarity between the first and second drive terminals, the second polarity being opposite the first polarity; sensing at the third drive terminal a second signal resulting from the application of the second drive signal; and producing a sum signal by summing the first and second signals, wherein the sum signal is indicative of an angular position of a rotor of the electric motor with respect to the stator windings.
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