公开(公告)号：US20220014125A1

公开(公告)日：2022-01-13

申请号：US17294774

申请日：2019-10-16

Applicant: Dyson Technology Limited

Inventor： Neil William HODGINS ,  Libo ZHENG

IPC: H02P6/15 ,  H02P25/03

Abstract: A method of controlling a brushless permanent magnet motor includes determining a motor operating target. The method includes comparing the motor operating target to a set of pre-determined excitation timing parameter relationships. The method includes operating the motor in accordance with an excitation timing parameter relationship determined from the set of pre-determined excitation timing parameter relationships to provide a motor operating response close to the motor operating target. The method includes measuring a measured motor operating response, comparing the measured motor operating response to the motor operating target, and applying a correction factor to an excitation timing parameter of the motor when the measured motor operating response does not match the motor operating target, such that the measured motor operating response moves toward the motor operating target.