US 12,283,904 B2
Motor control device and computer program
Kensuke Ito, Kanagawa (JP); and Tomoyuki Kawano, Kanagawa (JP)
Assigned to KYB CORPORATION, Tokyo (JP)
Filed by KYB Corporation, Tokyo (JP)
Filed on Feb. 7, 2023, as Appl. No. 18/165,824.
Claims priority of application No. 2022-025645 (JP), filed on Feb. 22, 2022; and application No. 2022-185890 (JP), filed on Nov. 21, 2022.
Prior Publication US 2023/0268863 A1, Aug. 24, 2023
Int. Cl. H02P 27/08 (2006.01)
CPC H02P 27/08 (2013.01) 7 Claims
OG exemplary drawing
 
1. A motor control device configured to control voltage signals of a plurality of phases, the voltage signals being applied to an alternating-current motor, the motor control device comprising:
a differential-value calculation unit configured to calculate a time differential value of a virtual line connecting peak values of each of phase voltage signals that are voltage signals of the respective phases, the voltage signals being input to the alternating-current motor;
a wavelength calculation unit configured to calculate a wavelength of each phase voltage signal input to the alternating-current motor from the time differential value; and
a switching-signal generation unit configured to generate, based on the calculated wavelength, a switching signal that switches the phase of the alternating-current motor, wherein
the wavelength calculation unit, and the switching-signal generation unit are circuits or controllers that execute a program stored in a storage unit.