Patent ID: 9026262
Filing Date: 2015-05-05
Classification: F04D,G06F,H02P,Y02B

Abstract:
1. A method for dynamically controlling a fan to dissipate heat of a processor and adjusting fan noise, the method comprising: predefining a multistage function curve which is established based on fan noise values and associates temperatures with rotation speed values; detecting a temperature of the processor; obtaining one of the rotation speed values by looking up the multistage function curve according to the detected temperature of the processor; and adjusting a rotation speed based on the obtained rotation speed value, wherein when the detected temperature of the processor is higher than a first threshold value and lower than a second threshold value, the rotation speed is controlled to rise with a variation rate of 1% per second; wherein the multistage function curve comprises a first steady-state function segment, a second steady-state function segment and N function segments, the N function segments are positioned between the first steady-state function segment and the second steady-state function segment, and N is a positive integer; a slope of the first steady-state function segment and a slope of the second steady-state function segment are both zero; a slope of a (i+1) the (i+1) the first threshold value corresponds to a first threshold point where the first steady-state function segment joins a first function segment.