Invention Grant
- Patent Title: Motor control device, control method, motor module, and electric power steering apparatus
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Application No.: US17547150Application Date: 2021-12-09
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Publication No.: US11713074B2Publication Date: 2023-08-01
- Inventor: Shuji Endo , Masaya Ishikawa , Hiroaki Mizushima
- Applicant: NIDEC CORPORATION
- Applicant Address: JP Kyoto
- Assignee: NIDEC CORPORATION
- Current Assignee: NIDEC CORPORATION
- Current Assignee Address: JP Kyoto
- Agency: Hauptman Ham, LLP
- Priority: JP 20206252 2020.12.11
- Main IPC: G05B5/00
- IPC: G05B5/00 ; H02H7/08 ; H02P1/00 ; H02P3/00 ; B62D15/02 ; H02P21/22 ; H02P25/22 ; H02P29/028 ; B62D5/04 ; H02P27/12

Abstract:
To improve steering feeling felt by a driver, a motor control device includes a processor and a memory which stores a program for controlling an operation of the processor. According to the program, the processor executes: switching from n-phase (n is an integer of three or more) energization control to n−1 phase energization control in response to a switching signal; acquiring a torque command value, an electrical angle of a motor, and an actual current value of the motor; generating a pre-current command value on the basis of the torque command value, the electrical angle of the motor, and the actual current value of the motor which are acquired; generating a current command value by applying dither control to the pre-current command value in a dead point range of an electrical angle range from 0 to 2π; and performing the n−1 phase energization control on the basis of the current command value.
Public/Granted literature
- US20220185370A1 MOTOR CONTROL DEVICE, CONTROL METHOD, MOTOR MODULE, AND ELECTRIC POWER STEERING APPARATUS Public/Granted day:2022-06-16
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