Control method and control device of direct-current brushless motor

The invention provides a control method and a control device of a direct-current brushless motor. The control method of the direct-current brushless motor comprises the following steps: calculating delay time based on a delay angle between a stator magnetomotive force and a rotor position when switching devices in a switch array of the direct-current brushless motor are switched; and controlling the state transition of the switching devices in each position interval of the Hall sensor based on the delay time so as to control the switching devices to delay switching at the delay time when the Hall sensor detects that the position of the rotor is changed. 本发明提供一种直流无刷电机的控制方法和控制装置。所述直流无刷电机的控制方法包括：基于直流无刷电机的开关阵列中的开关器件切换时的定子磁动势和转子位置之间的延迟角度，来计算延迟时间；基于所述延迟时间来控制开关器件在霍尔传感器的每个位置区间内的状态转换，以实现当通过霍尔传感器检测到转子位置改变时控制开关器件以所述延迟时间延迟切换。