Patent ID: 6755616
Filing Date: 2004-06-29
Classification: G05D,G06F,H05K,Y02D,Y10S

Abstract:
A method of noise value control through controlling the rotation rate of a fan, which comprises:(a) acquiring a fan module; (b) acquiring a corresponding relation of values of the temperature of a target member and values of the operation parameter of the fan module, and a corresponding relation of values of the operation parameter of the fan module and values of the noise; (c) plotting a relation chart according to values of the temperature of the target member and values of the operation parameter of the fan module, and a relation chart according to values of the operation parameter of the fan module and values of the noise; (d) setting a temperature control plot; (e) plotting the temperature control plot into the relation chart according to values of the temperature of the target member and values of the operation parameter of the fan module; (f) obtaining an intersection point, called an operation point, of the fan module, of the temperature control plot and the relation chart of according to values of the temperature of the target member and values of the operation parameter of the fan module; (g) obtaining the operation parameter value corresponding to the operation point from the relation chart according to values of the temperature of the target member and values of the operation parameter of the fan module; (h) obtaining the noisy value corresponding to the operation point from the relation chart according to values of the operation parameter of the fan module and values of the noise; (i) obtaining a tolerant range of noisy values; and (j) making sure the noisy value satisfy the tolerant range.