Invention Grant
- Patent Title: Motor control apparatus and motor drive apparatus
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Application No.: US15690827Application Date: 2017-08-30
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Publication No.: US10374535B2Publication Date: 2019-08-06
- Inventor: Shen Wang
- Applicant: Kabushiki Kaisha Toshiba
- Applicant Address: JP Tokyo
- Assignee: Kabushiki Kaisha Toshiba
- Current Assignee: Kabushiki Kaisha Toshiba
- Current Assignee Address: JP Tokyo
- Agency: White & Case LLP
- Priority: JP2017-027747 20170217
- Main IPC: H02P6/16
- IPC: H02P6/16 ; H02P6/17 ; H02P6/18 ; H02K11/215

Abstract:
According to an embodiment, a motor control apparatus includes a current detecting unit that detects a motor current, a rotation position detecting unit that detects a rotation position of a rotor, a phase difference calculating unit that calculates first phase difference information between the motor current and the rotation position when a rotation speed of a motor is equal to or lower than a predetermined rotation speed and second phase difference information when the rotation speed of the motor exceeds the predetermined rotation speed, a storage unit that stores phase correction information based on the first phase difference information, a correcting unit that outputs a corrected rotation position signal and a drive unit that generates a drive signal to be output to the motor.
Public/Granted literature
- US20180241327A1 MOTOR CONTROL APPARATUS AND MOTOR DRIVE APPARATUS Public/Granted day:2018-08-23
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