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    Method of controlling a brushless motor
    1.
    发明授权
    Method of controlling a brushless motor 有权

    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.