Method and device for determining fan speed
A fan speed and speed technology, applied in the computer field, can solve the problems of high temperature of the heat-dissipated parts and the fan speed cannot meet the heat dissipation requirements of the heat-dissipated parts, so as to achieve the effect of increasing the degree, narrowing the gap, and reducing the possibility of overheating
Active Publication Date: 2017-07-28
LENOVO (BEIJING) LTD
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Problems solved by technology
[0006] Embodiments of the present invention provide a method and device for determining the fan speed. The purpose is to solve the problem that the speed of the fan cannot meet the heat dissipation requirements of the heat-dissipated components caused by the error between the actual speed of the fan and the speed calculated by the PID, so that the The problem of overheating of heat dissipation components
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[0054] The embodiment of the present application discloses a method and device for determining the fan speed, which can be applied in electronic equipment, the electronic equipment has a fan, and a control device of the fan, and the control device of the fan is used to control the operation of the fan. In addition, the electronic device also has a register for storing data. In this embodiment, a hard disk is taken as an example. It should be pointed out that the method for controlling the fan speed can also be used for other components of electronic equipment.
[0055] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary sk...
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The embodiment of the application provides a method and a device for determining the rotation speed of a fan. Apart from the integer part of the rotation speed value of a current calculation period, an integer value which is formed by accumulating decimal parts of rotation speed values of historical calculation periods is also accumulated to the rotation speed of the fan, namely compared with the prior art, the decimal part, which cannot be identified by the fan, of each calculation period is accumulated step by step, and the obtained integer part is accumulated into the final rotation speed value instead of being rounded, so that the difference between the actual rotation speed of the fan and the calculation value is reduced; and the match degree between the rotation speed of the fan and the temperature of components subjected to heat dissipation is improved, so that the probability that the components which are subjected to heat dissipation is overheated is reduced.
Description
technical field [0001] The invention relates to the field of computers, in particular to a method and device for determining the rotational speed of a fan. Background technique [0002] A hard disk is an important storage element in an electronic device. In order to ensure the normal use of the hard disk, a fan is generally installed in the electronic device to dissipate heat from the hard disk. [0003] At present, the PID (proportional, integral, derivative) control method is used to determine the speed of the fan. Due to hardware limitations, the fan cannot recognize the speed less than 1. Therefore, when the obtained fan speed has a fractional part, usually The decimal part will be rounded up. For example, if the speed is 1.2 using the PID control algorithm, the final result will be 1. If the obtained speed is 1.6, the final result will be 2. [0004] Because the speed value obtained in this calculation cycle will be added to the speed value in the next calculation cycl...
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IPC IPC(8): F04D27/00G06F1/20
Inventor 范瑞展保罗·雅文赖正明
Owner LENOVO (BEIJING) LTD