CN110778517B - Fan control method, device and storage medium - Google Patents
Fan control method, device and storage medium Download PDFInfo
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- CN110778517B CN110778517B CN201910926260.4A CN201910926260A CN110778517B CN 110778517 B CN110778517 B CN 110778517B CN 201910926260 A CN201910926260 A CN 201910926260A CN 110778517 B CN110778517 B CN 110778517B
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- 238000000034 method Methods 0.000 title claims abstract description 35
- 230000004044 response Effects 0.000 claims abstract description 28
- 238000004590 computer program Methods 0.000 claims description 14
- 230000000630 rising effect Effects 0.000 claims description 8
- 230000009286 beneficial effect Effects 0.000 abstract description 5
- 230000017525 heat dissipation Effects 0.000 abstract description 5
- 230000003449 preventive effect Effects 0.000 abstract description 4
- 230000006870 function Effects 0.000 description 6
- 230000008859 change Effects 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
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- 238000012986 modification Methods 0.000 description 2
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- 230000033228 biological regulation Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/20—Cooling means
- G06F1/206—Cooling means comprising thermal management
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/82—Forecasts
- F05D2260/821—Parameter estimation or prediction
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/30—Control parameters, e.g. input parameters
- F05D2270/303—Temperature
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
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- Theoretical Computer Science (AREA)
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention discloses a control method of a fan, which comprises the following steps: in response to receiving a starting instruction, sending an initial control signal to the fan; circularly acquiring the temperature of each memory, and comparing the temperature of each memory to obtain the highest temperature; predicting a variation trend of a current of the memory corresponding to the highest temperature in response to the highest temperature being greater than a preset value; in response to predicting that the current is in an upward trend, sending a control signal corresponding to an upward speed of the current to the fan. The invention also discloses a computer device and a readable storage medium. The method disclosed by the invention can improve the rotating speed of the fan in advance by predicting the current trend, so that the integral environment temperature is not obviously improved because the fan carries out preventive heat dissipation, thus being beneficial to the working efficiency of related devices of a system and saving the power consumption caused by temperature rise.
Description
Technical Field
The invention relates to the field of fan control, in particular to a fan control method, fan control equipment and a storage medium.
Background
At present, in the heat dissipation design of a server or a memory, fan intensity control is mostly performed based on the current temperature performance. For example, a table lookup is used to output the corresponding PID parameters or control the fan intensity according to the temperature value read at present.
However, this method may result in untimely adjustment of the fan speed, which may significantly increase the overall ambient temperature, which may not be beneficial to the working efficiency of the related devices of the system, or may result in increased power consumption of the fan due to an excessive fan speed.
Therefore, a method for controlling the fan is urgently needed.
Disclosure of Invention
In view of the above, in order to overcome at least one aspect of the above problems, an embodiment of the present invention provides a method for controlling a fan, including:
in response to receiving a starting instruction, sending an initial control signal to the fan;
circularly acquiring the temperature of each memory, and comparing the temperature of each memory to obtain the highest temperature;
predicting a variation trend of a current of the memory corresponding to the highest temperature in response to the highest temperature being greater than a preset value;
in response to predicting that the current is in an upward trend, sending a control signal corresponding to an upward speed of the current to the fan.
In some embodiments, sending a control signal corresponding to a rising speed of the current to the fan further comprises:
sending a first control signal to the fan in response to the rate of rise of the current being less than a first threshold.
In some embodiments, further comprising:
sending a second control signal to the fan greater than the first control signal in response to the rate of rise of the current being greater than a first threshold and less than a second threshold.
In some embodiments, further comprising:
sending a third control signal to the fan greater than the second control signal in response to the speed of rise of the current being greater than the second threshold and less than a third threshold.
In some embodiments, sending a control signal corresponding to a rising speed of the current to the fan further comprises:
after a preset time period, judging whether the temperature of the memory corresponding to the highest temperature is reduced or not;
adjusting, by a PID controller, the control signal in response to a temperature drop of a memory corresponding to the maximum temperature.
In some embodiments, further comprising:
and responding to the current trend of descending, continuously sending an initial control signal to the fan, and returning to the step of comparing the temperature of each memory.
In some embodiments, continuing to send an initial control signal to the fan further comprises:
after a preset time period, judging whether the temperature of the memory corresponding to the highest temperature rises or not;
adjusting, by a PID controller, the initial control signal in response to a temperature rise of a memory corresponding to the maximum temperature.
In some embodiments, further comprising:
and sending an initial control signal, the first control signal, the second control signal and the third control signal to the fan through a BMC (baseboard management controller), an FPGA (field programmable gate array), a CPLD (complex programmable logic device) or an MCU (micro controller unit).
Based on the same inventive concept, according to another aspect of the present invention, an embodiment of the present invention further provides a computer apparatus, including:
at least one processor; and
a memory storing a computer program operable on the processor, wherein the processor executes the program to perform the steps of any of the methods of controlling a fan described above.
Based on the same inventive concept, according to another aspect of the present invention, an embodiment of the present invention further provides a computer-readable storage medium storing a computer program which, when executed by a processor, performs the steps of any of the methods for controlling a fan as described above.
The invention has one of the following beneficial technical effects: the method disclosed by the invention can improve the rotating speed of the fan in advance by predicting the current trend, so that the integral environment temperature is not obviously improved because the fan carries out preventive heat dissipation, thus being beneficial to the working efficiency of related devices of a system and saving the power consumption caused by temperature rise.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other embodiments can be obtained by using the drawings without creative efforts.
Fig. 1 is a flowchart illustrating a method for controlling a fan according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a computer device provided in an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a computer-readable storage medium according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following embodiments of the present invention are described in further detail with reference to the accompanying drawings.
It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are used for distinguishing two entities with the same name but different names or different parameters, and it should be noted that "first" and "second" are merely for convenience of description and should not be construed as limitations of the embodiments of the present invention, and they are not described in any more detail in the following embodiments.
In the embodiment of the present invention, bmc (baseboard management controller) is a baseboard management controller, a remote management controller of an execution server, fpga (field Programmable Gate array) is an electric field Programmable Logic Gate array, and CPLD (complex Programmable Logic device) is a complex Programmable Logic device, and CPLD is suitable for implementing various operations and combinational Logic. The PID controller is composed of a proportional unit (P), an integral unit (I), and a derivative unit (D), and its characteristics can be adjusted by adjusting the gains Kp, Ki, and Kd of the three units. Pwm (pulse Width modulation), which is a technique for converting an analog signal into a pulse wave, generally has a fixed period of the converted pulse wave, but the duty cycle of the pulse wave varies depending on the magnitude of the analog signal.
According to an aspect of the present invention, an embodiment of the present invention provides a method for controlling a fan, as shown in fig. 1, which may include the steps of: s1, responding to the received starting instruction, and sending an initial control signal to the fan; s2, circularly acquiring the temperature of each memory, and comparing the temperature of each memory to obtain the highest temperature; s3, responding to the fact that the highest temperature is larger than a preset value, and predicting the change trend of the current of the memory corresponding to the highest temperature; and S4, responding to the prediction that the current is in the ascending trend, and sending a control signal corresponding to the ascending speed of the current to the fan.
The method disclosed by the invention can improve the rotating speed of the fan in advance by predicting the current trend, so that the integral environment temperature is not obviously improved because the fan carries out preventive heat dissipation, thus being beneficial to the working efficiency of related devices of a system and saving the power consumption caused by temperature rise.
In some embodiments, when a server power-on command is received, an initial control signal is sent to the fan to enable the fan to operate at an initial speed.
In some embodiments, the initial control signal may be a BWM signal, and may be sent to the fan by a BMC, an FPGA, a CPLD, or an MCU.
Then, the temperature of each memory is continuously obtained, and the temperature of each memory is compared to obtain the highest temperature.
In some embodiments, the temperature of each memory may be obtained by the BMC, FPGA, CPLD, or MCU.
It should be noted that the temperature of each memory is dynamically changed, that is, the memory corresponding to the highest temperature may be changed.
Then, it is determined whether the maximum temperature is greater than a preset threshold.
In some embodiments, in response to the maximum temperature being greater than a preset value, a trend of a change in a current of the memory corresponding to the maximum temperature is predicted.
It should be noted that, after the server is powered on, the current and the temperature of the memory may be obtained every 1 second, so that when the temperature of one memory is the highest and is greater than the threshold, the next current change trend may be predicted according to the obtained current value.
Of course, in order to obtain the temperature and the current of each memory, a temperature sensor and a current sensor may be disposed on each memory, and the detected temperature and current may be transmitted to the BMC, the FPGA, the CPLD, or the MCU.
In some embodiments, in response to predicting that the current is in an upward trend, a control signal corresponding to a rate of rise of the current is sent to the fan.
In some embodiments, a first control signal is sent to the fan in response to a rate of rise of the current being less than a first threshold. In a further embodiment, a second control signal greater than the first control signal is sent to the fan in response to the rate of rise of the current being greater than a first threshold and less than a second threshold. In a further embodiment, a third control signal, greater than the second control signal, is sent to the fan in response to the rate of rise of the current being greater than the second threshold and less than a third threshold.
Specifically, the temperature that can be reached by the memory may be predicted based on the rising speed of the current, so that a first control signal may be sent to the fan when the rising speed of the current is in a first level, i.e., less than a first threshold value, a second control signal may be sent to the fan when the rising speed of the current is in a second level, i.e., less than a second threshold value and greater than the first threshold value, and a third control signal may be sent to the fan when the rising speed of the current is in a third level, i.e., greater than the second threshold value and less than a third threshold value.
It should be noted that the first control signal, the second control signal and the third control signal are all multiplied by weights on the basis of the initial control signal to obtain the rotation speeds of the increased fans with different amplitudes, and the weights corresponding to the three control signals are different. In addition, different servers can set different weights to meet actual requirements.
In some embodiments, the first control signal, the second control signal, and the third control signal may be issued by a BMC, an FPGA, a CPLD, or an MCU.
In some embodiments, after a period of time, the trend of the current may continue to be predicted, and if the current trends downward, the rotation speed of the fan may be reduced based on the first control signal, the second control signal, or the third control signal. Specifically, the method for reducing the rotation speed of the fan is the same as the method for increasing the rotation speed of the fan, and the weight given to the first control signal, the second control signal or the third control signal is determined by determining the reduction speed of the current, but the weight at this time is to reduce the magnitude of the first control signal, the second control signal or the third control signal to reduce the rotation speed of the fan.
It should be noted that, if the temperature of each storage is not greater than the threshold, the fan is maintained at the initial rotation speed, that is, the rotation speed of the fan is not changed.
In some embodiments, sending a control signal corresponding to a rising speed of the current to the fan further comprises: after a preset time period, judging whether the temperature of the memory corresponding to the highest temperature is reduced or not; adjusting, by a PID controller, the control signal in response to a temperature drop of a memory corresponding to the maximum temperature.
Specifically, it is possible to predict the error by predicting the current trend to control the increase of the fan speed in advance, and since the current changes faster than the temperature changes, it is necessary to adjust the fan speed by the actual temperature change after a certain period of time.
In some embodiments, the speed of the fan may be adjusted by the PID controller based on the actual temperature, for example, the speed of the fan may be adjusted by adjusting the PWM signal.
In some embodiments, when the trend of the current of the memory corresponding to the highest temperature is predicted, in response to the current being in a downward trend, the initial control signal is continuously sent to the fan, and the step of comparing the temperature of each memory is returned.
Specifically, when the current of the memory corresponding to the highest temperature is judged to be in a descending trend, the memory is in a load reduction state, so that the rotating speed of the fan does not need to be adjusted, the initial rotating speed of the fan is continuously maintained, and the temperature of each memory is continuously compared.
Of course, the predicted current descending trend may be wrong, and at this time, after a preset time period elapses, it is determined whether the temperature of the memory corresponding to the maximum temperature rises; adjusting, by a PID controller, the initial control signal in response to a temperature rise of a memory corresponding to the maximum temperature.
In some embodiments, the speed of the fan may be adjusted by the PID controller based on the actual temperature, for example, the speed of the fan may be adjusted by adjusting the PWM signal. For example, the PID controller can track and converge the PWM according to the predetermined Kp, Ki and Kd.
Therefore, the method provided by the embodiment can be used for performing preventive heat dissipation on the fan, so that the overall environment temperature is not remarkably improved, the working efficiency of related devices of the system is facilitated, and the power consumption caused by temperature rise is reduced. When the device is in operation load reduction, the rotation speed of the fan is reduced in advance because the expected temperature is not increased any more, so that the power consumption of the fan is saved. Of course, the actual regulation can also be carried out by the PID controller according to the actual memory temperature.
Based on the same inventive concept, according to another aspect of the present invention, as shown in fig. 2, an embodiment of the present invention further provides a computer apparatus 501, comprising:
at least one processor 520; and
the memory 510, the memory 510 stores a computer program 511 that is executable on the processor, and the processor 520 executes the program to perform the steps of any of the above-described fan control methods.
Based on the same inventive concept, according to another aspect of the present invention, as shown in fig. 3, an embodiment of the present invention further provides a computer-readable storage medium 601, where the computer-readable storage medium 601 stores computer program instructions 610, and the computer program instructions 610, when executed by a processor, perform the steps of the method for controlling a fan as any one of the above.
Finally, it should be noted that, as will be understood by those skilled in the art, all or part of the processes of the methods of the above embodiments may be implemented by a computer program to instruct related hardware to implement the methods. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), a Random Access Memory (RAM), or the like. The embodiments of the computer program may achieve the same or similar effects as any of the above-described method embodiments.
In addition, the apparatuses, devices, and the like disclosed in the embodiments of the present invention may be various electronic terminal devices, such as a mobile phone, a Personal Digital Assistant (PDA), a tablet computer (PAD), a smart television, and the like, or may be a large terminal device, such as a server, and the like, and therefore the scope of protection disclosed in the embodiments of the present invention should not be limited to a specific type of apparatus, device. The client disclosed by the embodiment of the invention can be applied to any one of the electronic terminal devices in the form of electronic hardware, computer software or a combination of the electronic hardware and the computer software.
Furthermore, the method disclosed according to an embodiment of the present invention may also be implemented as a computer program executed by a CPU, and the computer program may be stored in a computer-readable storage medium. The computer program, when executed by the CPU, performs the above-described functions defined in the method disclosed in the embodiments of the present invention.
Further, the above method steps and system elements may also be implemented using a controller and a computer readable storage medium for storing a computer program for causing the controller to implement the functions of the above steps or elements.
Further, it should be appreciated that the computer-readable storage media (e.g., memory) herein can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. By way of example, and not limitation, nonvolatile memory can include Read Only Memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM), which can act as external cache memory. By way of example and not limitation, RAM is available in a variety of forms such as synchronous RAM (DRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The storage devices of the disclosed aspects are intended to comprise, without being limited to, these and other suitable types of memory.
Those of skill would further appreciate that the various illustrative logical blocks, modules, circuits, and algorithm steps described in connection with the disclosure herein may be implemented as electronic hardware, computer software, or combinations of both. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as software or hardware depends upon the particular application and design constraints imposed on the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the disclosed embodiments of the present invention.
The various illustrative logical blocks, modules, and circuits described in connection with the disclosure herein may be implemented or performed with the following components designed to perform the functions herein: a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination of these components. A general purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP, and/or any other such configuration.
The steps of a method or algorithm described in connection with the disclosure herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC. The ASIC may reside in a user terminal. In the alternative, the processor and the storage medium may reside as discrete components in a user terminal.
In one or more exemplary designs, the functions may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer. By way of example, and not limitation, such computer-readable media can comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor. Also, any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of medium. Disk and disc, as used herein, includes Compact Disc (CD), laser disc, optical disc, Digital Versatile Disc (DVD), floppy disk, blu-ray disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media.
The foregoing is an exemplary embodiment of the present disclosure, but it should be noted that various changes and modifications could be made herein without departing from the scope of the present disclosure as defined by the appended claims. The functions, steps and/or actions of the method claims in accordance with the disclosed embodiments described herein need not be performed in any particular order. Furthermore, although elements of the disclosed embodiments of the invention may be described or claimed in the singular, the plural is contemplated unless limitation to the singular is explicitly stated.
It should be understood that, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly supports the exception. It should also be understood that "and/or" as used herein is meant to include any and all possible combinations of one or more of the associated listed items.
The numbers of the embodiments disclosed in the embodiments of the present invention are merely for description, and do not represent the merits of the embodiments.
It will be understood by those skilled in the art that all or part of the steps of implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, and the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, of embodiments of the invention is limited to these examples; within the idea of an embodiment of the invention, also technical features in the above embodiment or in different embodiments may be combined and there are many other variations of the different aspects of the embodiments of the invention as described above, which are not provided in detail for the sake of brevity. Therefore, any omissions, modifications, substitutions, improvements, and the like that may be made without departing from the spirit and principles of the embodiments of the present invention are intended to be included within the scope of the embodiments of the present invention.
Claims (6)
1. A control method of a fan comprises the following steps:
in response to receiving a starting instruction, sending an initial control signal to the fan;
circularly acquiring the temperature of each memory, and comparing the temperature of each memory to obtain the highest temperature;
predicting a variation trend of a current of the memory corresponding to the highest temperature in response to the highest temperature being greater than a preset value;
responding to the current which is in a descending trend, continuously sending an initial control signal to the fan, and returning to the step of comparing the temperature of each memory;
in response to predicting that the current is in an upward trend, sending a control signal corresponding to an upward speed of the current to the fan;
wherein transmitting a control signal corresponding to a rising speed of the current to the fan further includes:
sending a first control signal to the fan in response to the speed of rise of the current being less than a first threshold;
sending a second control signal greater than the first control signal to the fan in response to the speed of rise of the current being greater than a first threshold and less than a second threshold;
sending a third control signal to the fan greater than the second control signal in response to the speed of rise of the current being greater than a second threshold and less than a third threshold;
the first control signal, the second control signal and the third control signal are obtained by multiplying different weights on the basis of the initial control signal, and then increasing the rotating speed of the fan by different amplitudes;
and continuing to predict the trend of the current, and reducing the rotating speed of the fan on the basis of the first control signal, the second control signal or the third control signal in response to the current showing a descending trend.
2. The method of claim 1, wherein sending a control signal to the fan corresponding to a rate of rise of the current further comprises:
after a preset time period, judging whether the temperature of the memory corresponding to the highest temperature is reduced or not;
adjusting, by a PID controller, the control signal in response to a temperature drop of a memory corresponding to the maximum temperature.
3. The method of claim 1, wherein continuing to send an initial control signal to the fan further comprises:
after a preset time period, judging whether the temperature of the memory corresponding to the highest temperature rises or not;
adjusting, by a PID controller, the initial control signal in response to a temperature rise of a memory corresponding to the maximum temperature.
4. The method of claim 1, further comprising:
and sending an initial control signal, the first control signal, the second control signal and the third control signal to the fan through a BMC (baseboard management controller), an FPGA (field programmable gate array), a CPLD (complex programmable logic device) or an MCU (micro controller unit).
5. A computer device, comprising:
at least one processor; and
memory storing a computer program operable on the processor, characterized in that the processor executes the program to perform the steps of the method according to any of claims 1-4.
6. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, is adapted to carry out the steps of the method of any one of claims 1 to 4.
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| CN201910926260.4A CN110778517B (en) | 2019-09-27 | 2019-09-27 | Fan control method, device and storage medium |
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| CN201910926260.4A CN110778517B (en) | 2019-09-27 | 2019-09-27 | Fan control method, device and storage medium |
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|---|---|---|---|---|
| CN111414057A (en) * | 2020-03-12 | 2020-07-14 | 苏州浪潮智能科技有限公司 | Fan rotating speed control method and system, electronic equipment and storage medium |
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