METHOD AND DEVICE FOR CONTROLLING FAN ROTATION SPEED IN ELECTRONIC DEVICE Russian patent published in 2019 - IPC F04D27/00 

FIELD: control systems.

SUBSTANCE: invention discloses a method and a device for controlling fan rotation speed in an electronic device. Method includes following stages: first temperature value of certain temperature collection point in electronic device is obtained at current speed of fan rotation (Step S102); obtaining value of change of first temperature value in first preset time period (Stage S104); and when the change value is greater than the first predetermined limit, the fan rotation speed is controlled (Step S106).

EFFECT: using the method and the device, the technical problem that the rotation speed can increase abruptly or cause vibration in the heat release process of the variable speed fan can be solved, stable operation of the fan is provided to a certain extent, and service life of the fan is prolonged.

10 cl, 8 dwg