Propose a methodology combined with multiple angles such as motor overload, fatigue impact, hydraulic characteristics, electromagnetic brake wear, etc., and this methodology can guide the timing of component input the control process reasonably. Verify the correctness of yaw start and stop control design parameters and the rationality of methodology based on millisecond level data collected from the actual operating wind farm. It is necessary to combine the fatigue impact of start stop with the yaw frequency and duration data of different wind field terrains in the yaw database, taking into account the scope of component life verification. At the same time, it is necessary to evaluate the friction work of the electromagnetic brake during the start stop process and the friction work of the electromagnetic brake to maintain the air gap, in order to ensure consistency between the air gap adjustment cycle of the electromagnetic brake and the maintenance cycle of the unit.