US 12,255,560 B2
Motor control device and motor control method
Chia-Hung Hung, Hsinchu (TW)
Assigned to Nuvoton Technology Corporation, Hsinchu (TW)
Filed by Nuvoton Technology Corporation, Hsinchu (TW)
Filed on Nov. 21, 2022, as Appl. No. 17/991,821.
Claims priority of application No. 110149361 (TW), filed on Dec. 29, 2021.
Prior Publication US 2023/0208331 A1, Jun. 29, 2023
Int. Cl. H02P 6/00 (2016.01); H02P 6/08 (2016.01); H02P 6/20 (2016.01); H02P 6/28 (2016.01); H02P 21/32 (2016.01); H02P 21/34 (2016.01)
CPC H02P 21/32 (2016.02) [H02P 6/08 (2013.01); H02P 6/20 (2013.01); H02P 6/28 (2016.02); H02P 21/34 (2016.02)] 10 Claims
OG exemplary drawing
 
1. A motor control device, comprising:
a memory, adapted to store at least one control parameter, wherein the at least one control parameter comprises starting-angle information and locked exciting-current information; and
a controller, coupled to the memory to access the at least one control parameter, wherein during an initialization period, the controller drives a motor to change a rotor position through a drive circuit for adjusting and obtaining a starting angle and a locked exciting current corresponding to the starting angle, the controller stores the starting-angle information corresponding to the starting angle and the locked exciting-current information corresponding to the locked exciting current in the memory, the starting angle and the locked exciting current corresponding to the starting angle are determined before a normal rotation period starts, and the normal rotation period is performed if the rotor position of the motor is at the starting angle before the normal rotation period starts; and
after the initialization period ends, during the normal rotation period, the controller maintains the rotor position of the motor at the starting angle with the locked exciting current through the drive circuit until the controller activates the motor through the drive circuit.