公开(公告)号：US09705435B2

公开(公告)日：2017-07-11

申请号：US13682819

申请日：2012-11-21

申请人： Dyson Technology Limited

发明人： Hanping Dai ,  Yu Chen ,  Mark Edward Leaver ,  Samuel Wesley Hinchliffe

IPC分类号： H02P23/12 ,  H02K19/12 ,  H02P6/14 ,  H02P6/26 ,  H02P29/032 ,  H02P6/15

CPC分类号： H02P6/26 ,  H02P6/15 ,  H02P6/153 ,  H02P29/032

摘要： A method of controlling a brushless motor that includes storing a lookup table of control values, periodically obtaining a speed-adjusted control value, and exciting a phase winding of the motor. The speed-adjusted control value is then used to define the phase and/or length of excitation. Obtaining the speed-adjusted control value includes measuring the speed of the motor, increasing or decreasing a speed-adjust variable in the event that the measured speed is greater or less than a threshold, selecting a control value from the lookup table using the measured speed, and adjusting the selected control value using the speed-adjust variable to obtain the speed-adjusted control value. Additionally, a control system that implements the method, and a motor assembly that incorporates the brushless motor and the control system.