CN117212215A

CN117212215A - Fan speed regulation parameter determination method and device, electronic equipment and storage medium

Info

Publication number: CN117212215A
Application number: CN202311251701.8A
Authority: CN
Inventors: 程枫; 印玮; 周丽平
Original assignee: Zhongke Controllable Information Industry Co Ltd
Current assignee: Zhongke Controllable Information Industry Co Ltd
Priority date: 2023-09-26
Filing date: 2023-09-26
Publication date: 2023-12-12

Abstract

The embodiment of the invention discloses a method, a device, electronic equipment and a storage medium for determining fan speed regulation parameters, wherein the method comprises the following steps: determining an initial PID speed regulation formula configured for a current target radiating component matched with a current target fan; wherein the initial PID speed regulation formula comprises target speed regulation parameters; under the condition that the current target heat dissipation part reaches a set working condition through the speed regulation operation of the current target fan, acquiring the related fan rotating speed of the current target fan and the related part temperature of the current target heat dissipation part; calculating the numerical value of a target speed regulation parameter according to the related fan rotating speed and the related component temperature to obtain a target PID speed regulation formula; the target PID speed regulation formula is used for determining the fan rotating speed applicable to the current target heat dissipation part by the current target fan. The technical scheme of the embodiment of the invention can improve the efficiency and the accuracy of the fan speed regulation parameter configuration, thereby ensuring the stable operation of the cooling fan in the equipment and improving the reliability of cooling of the fan.

Description

Fan speed regulation parameter determination method and device, electronic equipment and storage medium

Technical Field

The embodiment of the invention relates to the technical field of fan control, in particular to a method and a device for determining a fan speed regulation parameter, electronic equipment and a storage medium.

Background

As the types and structures of electronic devices become more complex, the variety and number of heat dissipation components within the device that need to be addressed is also increasing. For equipment, the heat dissipation performance of the whole machine at the highest working environment temperature required by the equipment is required to be met, and the heat dissipation performance requirement on a single heat dissipation part in the equipment is also higher and higher.

At present, the fan is regulated in speed to dissipate heat in the prior art equipment usually adopts the following modes: firstly, using a speed regulating logic in an open loop mode to regulate the speed of a fan; second, fan speed regulation is performed using closed loop (close) mode speed regulation logic; thirdly, fan speed regulation is performed by using speed regulation logic of PID (Proportional Integral Derivative, control system); fourth, fan speed regulation is performed using Grade Loop mode speed regulation logic. Among them, the use of PID speed regulation logic for fan speed regulation is a common way in the field of fan speed regulation.

The inventors have found that the following drawbacks exist in the prior art in the process of implementing the present invention: the openloop fan speed regulation mode needs to determine the relation between a temperature sensor to be regulated and a direct parameter speed regulation sensor (a main temperature sensor for short), and adjusts a fan strategy through the main temperature sensor to ensure that the temperature value of the temperature sensor to be regulated is within a reasonable range. However, because the main temperature sensor and the temperature sensor to be adjusted are not in a linear association relationship, if the parameter setting is unreasonable, a larger heat dissipation allowance exists in the main temperature sensor, so that the fan has high rotating speed, high power consumption and large noise, and the main temperature sensor cannot cover the heat dissipation condition of the temperature sensor to be adjusted. When the temperature value of the main temperature regulating sensor is controlled in the stable area range, the temperature fluctuates up and down in the stable area range by adopting a close fan speed regulating method, and the rotating speed of the fan is not regulated at this time, so that the delay and untimely regulation of the fan are caused, the power consumption of the fan is increased, and the noise is improved. By adopting the PID fan speed regulation method, the formula parameters for speed regulation of the PID fan at present are only set by empirical values, namely the formula parameters are unreasonable. In this case, even if the heat source of the heat radiating member is stable, the temperature value of the main temperature sensor and the fan rotation speed cannot be balanced, and the fan rotation speed and the temperature of the main temperature sensor are liable to vibrate at high frequency for a long time. At the same time, there is also a risk of overheating of the heat dissipating member when the heat source of the heat dissipating member suddenly rises. The Grade Loop fan speed regulating method sets a plurality of fan fixed rotating speeds in a sectional mode, the power consumption of the fan is high, and the rotating speeds of the fans have no linear relation.

Disclosure of Invention

The embodiment of the invention provides a method, a device, electronic equipment and a storage medium for determining fan speed regulation parameters, which can improve the efficiency and the accuracy of fan speed regulation parameter configuration, thereby ensuring the stable operation of a cooling fan in the equipment and improving the reliability of cooling of the fan.

According to an aspect of the present invention, there is provided a fan speed regulation parameter determining method, including:

determining an initial PID speed regulation formula configured for a current target radiating component matched with a current target fan; wherein the initial PID speed regulation formula comprises target speed regulation parameters;

acquiring the related fan rotating speed of the current target fan and the related component temperature of the current target heat dissipation component under the condition that the current target heat dissipation component is determined to reach a set working condition through the speed regulation operation of the current target fan;

calculating the numerical value of the target speed regulating parameter according to the related fan rotating speed and the related component temperature to obtain a target PID speed regulating formula;

the target PID speed regulation formula is used for determining the fan rotating speed applicable to the current target cooling component by the current target fan.

According to the embodiment of the invention, the initial PID speed regulation formula comprising the target speed regulation parameters is determined, the initial PID speed regulation formula is suitable for determining the fan speed of the current target cooling component matched with the current target fan, and the current target cooling component is controlled to achieve the set working condition through the speed regulation operation of the current target fan, and then the associated fan speed of the current target fan and the associated component temperature of the current target cooling component are obtained, so that the value of the target speed regulation parameters is calculated according to the associated fan speed and the associated component temperature, and the target PID speed regulation formula is obtained, thereby determining the fan speed suitable for the current target cooling component through the target PID speed regulation formula, solving the problem that the setting of the formula parameters of PID fan speed regulation is unreasonable in the existing PID fan speed regulation method, improving the efficiency and accuracy of fan speed regulation parameter configuration, ensuring the stable operation of the cooling fan in equipment, and improving the reliability of fan heat radiation.

Optionally, the determining the initial PID governing formula of the current target heat sink component configuration matching the current target fan includes:

acquiring a component specification temperature value of the current target heat dissipation component;

generating a target temperature value of the initial PID speed regulation formula according to the component specification temperature value of the current target radiating component;

and generating the initial PID speed regulation formula according to the target temperature value and each target speed regulation parameter configuration.

According to the technical scheme, the target temperature value of the initial PID speed regulation formula is generated according to the component specification temperature value of the current target heat dissipation component, so that the fan speed regulation strategy implemented by the PID speed regulation formula can meet the heat dissipation requirement of the heat dissipation component on the specification temperature value, and the problem of temperature overshoot of the heat dissipation component is avoided.

Optionally, the target speed regulation parameter includes a scaling factor parameter, the set working conditions include a first set working condition and a second set working condition which are achieved by independently pressurizing the current target heat dissipation component in a low-temperature working temperature environment, and the set working conditions further include a third set working condition which is achieved by pressurizing the whole machine in the low-temperature working temperature environment;

the calculating the value of the target speed regulation parameter according to the related fan rotating speed and the related component temperature comprises the following steps:

Determining a first associated fan speed and a first associated component temperature associated with the first set of operating conditions, and a second associated fan speed and a second associated component temperature associated with the second set of operating conditions;

calculating a first standby scaling factor parameter according to the first associated fan speed, the first associated component temperature, the second associated fan speed and the second associated component temperature;

determining a third associated fan speed and a third associated component temperature associated with the third set of operating conditions;

calculating a second standby scaling factor parameter according to the third associated fan speed, the third associated component temperature, the second associated fan speed and the second associated component temperature;

and selecting the proportional coefficient parameter from the first standby proportional coefficient parameter and the second standby proportional coefficient parameter according to the magnitude relation between the first standby proportional coefficient parameter and the second standby proportional coefficient parameter.

According to the technical scheme, when the heat dissipation part is independently pressurized under the low-temperature working temperature environment of the equipment and the whole machine is pressurized to the set working condition, the fan rotation speed required by the fan is lowest under the same power consumption pressure of the whole machine equipment in the low-temperature environment, and the change of the fan rotation speed is the largest to the change of the whole air quantity of the system at the low speed, so that the changed heat dissipation performance is the largest. The same heat radiation performance is ensured under the same component pressure, the less the rotating speed of the fan needs to be changed at low temperature, the calculated speed increase of the fan is minimum, so that the minimum value of the calculated standby proportional coefficient parameter can be directly ensured, and the minimum value of the finally calculated proportional coefficient parameter is ensured. When the value of the proportionality coefficient parameter is smaller, the fan and the parts do not oscillate after being stabilized for a long time in the whole fan speed regulating process, the efficiency of adjusting the proportionality coefficient parameter in the later period is greatly improved, and the fan stability is improved.

Optionally, the calculating a first standby scaling factor parameter according to the first associated fan speed, the first associated component temperature, the second associated fan speed, and the second associated component temperature includes:

calculating the first standby scaling factor parameter based on the following formula:

k1＝(PWM2-PWM1)/(T1-T2)

wherein k1 represents the first standby scaling factor parameter, PWM2 represents the second associated fan speed, PWM1 represents the first associated fan speed, T1 represents the first associated component temperature, and T2 represents the second associated component temperature;

the calculating a second standby scaling factor parameter according to the third associated fan speed, the third associated component temperature, the second associated fan speed, and the second associated component temperature includes:

calculating the second standby scaling factor parameter based on the following formula:

k2＝(PWM3-PWM2)/(T2-T3)

wherein k2 represents the second standby scaling factor parameter, PWM3 represents the third associated fan speed, and T3 represents the third associated component temperature.

According to the calculation scheme, the numerical value of the first standby proportional coefficient parameter can be accurately calculated through the formula k1, the accuracy of calculation of the first standby proportional coefficient parameter is improved, the numerical value of the second standby proportional coefficient parameter can be accurately calculated through the formula k2, and the accuracy of calculation of the second standby proportional coefficient parameter is improved.

Optionally, the target speed regulation parameter further includes an integral coefficient parameter, and the set working conditions include a fourth set working condition when the current target heat dissipation component is in a set temperature interval through heat dissipation of the fan in a high-temperature working temperature environment, and a fifth set working condition when the current target heat dissipation component is in a set temperature value through heat dissipation of the fan in the high-temperature working temperature environment;

determining a fourth related fan speed related to the fourth set working condition and a fifth related fan speed related to the fifth set working condition;

and determining the integral coefficient parameter according to the proportionality coefficient parameter, the fourth related fan rotating speed and the fifth related fan rotating speed.

Optionally, the determining the integral coefficient parameter according to the proportionality coefficient parameter, the fourth related fan speed and the fifth related fan speed includes:

calculating the integral coefficient parameter based on the following formula:

ki＝2kp/((PWM5-PWM4)+2kp)

where ki denotes the integral coefficient parameter, kp denotes the proportional coefficient parameter, PWM4 denotes the fourth associated fan speed, and PWM5 denotes the fifth associated fan speed.

According to the technical scheme, the current target fan is controlled to radiate heat under the high-temperature working temperature environment of the current target radiating component so that the current target fan reaches the set stable working condition, the calculated integral coefficient parameter is also applicable to the low-temperature working temperature environment, and the accuracy and applicability of the integral coefficient parameter can be improved.

Optionally, after calculating the value of the target speed regulation parameter according to the associated fan speed and the associated component temperature, the method further includes:

in the process of verifying the fan speed regulation parameters of the current target fan, obtaining fan vibration related data of the current target fan and temperature fluctuation related data of the current target heat dissipation part;

and adjusting the numerical value of the target speed regulation parameter according to the fan oscillation related data and the temperature fluctuation related data.

According to the technical scheme, the accuracy and the rationality of the target debugging parameters can be further improved by adjusting the numerical value of the target speed regulating parameters.

Optionally, the target speed regulation parameter includes a proportional coefficient parameter, an integral coefficient parameter and a differential coefficient parameter;

the adjusting the numerical value of the target speed regulation parameter according to the fan oscillation related data and the temperature fluctuation related data comprises the following steps:

Under the condition that the high-frequency oscillation time of the current target fan exceeds a first time threshold value and the temperature fluctuation time of the current target heat dissipation part exceeds a second time threshold value, gradually adjusting the numerical value of the proportionality coefficient parameter according to a parameter adjustment step until the high-frequency oscillation time of the current target fan is smaller than a third time threshold value and the temperature fluctuation time of the current target heat dissipation part is smaller than a fourth time threshold value;

reducing the value of the integral coefficient parameter under the condition that the current component temperature of the current target heat dissipation component exceeds a preset component temperature threshold value is determined;

and when the temperature fluctuation time of the current target heat dissipation part is determined to be larger than a fifth time threshold and smaller than a sixth time threshold, or when the current part temperature of the current target heat dissipation part is determined to reach a set temperature value, the numerical value of the differential coefficient parameter is increased.

According to the technical scheme, in the verification stage of the fan speed regulation parameters, according to the specific oscillation conditions of the target fan and the target radiating component and the overtemperature condition of the target radiating component, the problem point can be found through rapid fan speed regulation, and the comparison coefficient parameter, the integral coefficient parameter and the differential coefficient parameter are respectively adaptively adjusted so as to rapidly solve the fan speed regulation problem, so that the rationality of the target speed regulation parameter is improved, the stability of the fan can be ensured, and the radiating reliability is greatly improved.

According to another aspect of the present invention, there is provided a fan speed regulation parameter determining apparatus, including:

the initial PID speed regulation formula determining module is used for determining an initial PID speed regulation formula configured for the current target radiating component matched with the current target fan; wherein the initial PID speed regulation formula comprises target speed regulation parameters;

the related rotation speed temperature acquisition module is used for acquiring the related fan rotation speed of the current target fan and the related component temperature of the current target heat dissipation component under the condition that the current target heat dissipation component is determined to reach a set working condition through the speed regulation operation of the current target fan;

the target speed regulation parameter calculation module is used for calculating the numerical value of the target speed regulation parameter according to the related fan rotating speed and the related component temperature to obtain a target PID speed regulation formula;

According to another aspect of the present invention, there is provided an electronic apparatus including:

at least one processor; and

a memory communicatively coupled to the at least one processor; wherein,

The memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the fan speed parameter determination method of any one of the embodiments of the present invention.

According to another aspect of the present invention, there is provided a computer readable storage medium storing computer instructions for causing a processor to execute the method for determining a fan speed adjustment parameter according to any one of the embodiments of the present invention.

It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the invention or to delineate the scope of the invention. Other features of the present invention will become apparent from the description that follows.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a flowchart of a method for determining fan speed adjustment parameters according to an embodiment of the present invention;

fig. 2 is a schematic diagram of an internal structure of a server device according to a first embodiment of the present invention;

FIG. 3 is a flowchart of a method for determining fan speed adjustment parameters according to a second embodiment of the present invention;

fig. 4 is a schematic diagram of the effect of the second embodiment of the present invention on the effect of the air volume of the whole machine under different fan rotation speed gradients;

FIG. 5 is a flow chart of a device executing fan speed control logic according to a target PID speed control formula according to a second embodiment of the invention;

FIG. 6 is a flow chart for determining scaling parameters according to an embodiment of the present invention;

FIG. 7 is a flowchart of determining an integral coefficient parameter according to an embodiment of the present invention;

FIG. 8 is a schematic flow chart for verifying a target speed regulation parameter according to an embodiment of the present invention;

FIG. 9 is a schematic diagram of a fan speed adjustment parameter determination device according to a third embodiment of the present invention;

fig. 10 is a schematic structural diagram of an electronic device according to a fourth embodiment of the present invention.

Detailed Description

In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.

It should be noted that the terms "first," "second," "third," "fourth," "fifth," "sixth," original and target, etc. in the description and claims of the present invention and the above drawings are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Example 1

Fig. 1 is a flowchart of a method for determining a fan speed regulation parameter according to an embodiment of the present invention, where the method may be applied to a case of quickly determining a value of a target speed regulation parameter in an initial PID speed regulation formula according to an associated fan speed and an associated component temperature, and the method may be performed by a fan speed regulation parameter determining device, which may be implemented by software and/or hardware and may be generally integrated in an electronic device, where the electronic device may be a terminal device or a server device, so long as data processing is possible. Accordingly, as shown in fig. 1, the method includes the following operations:

S110, determining an initial PID speed regulation formula configured for a current target radiating component matched with a current target fan; wherein the initial PID tuning formula includes a target tuning parameter.

The current target fan may be any one of the devices that need to determine the fan speed adjustment parameters of the cooling fan. The current target heat dissipation part may be a heat dissipation part to which the current target fan calculates a fan rotation speed, for example, may be various types of heat dissipation parts such as a processor or a memory, and the like. The initial PID tuning formula may be an initially constructed PID tuning formula. The target governing parameter may be a coefficient in the initial PID governing equation.

Fig. 2 is a schematic diagram of an internal structure of a server device according to a first embodiment of the present invention. In a specific example, illustrated as a server device, as shown in fig. 2, a front hard disk 1 (not all shown in fig. 2) with 12 3.5 inches in front of the server, and 4 intermediate fans 2 behind the hard disk 1 are used to dissipate heat from the system. On the intermediate motherboard 5 are two CPUs 3 (Central Processing Unit, central processing units) and corresponding memories 4. When the server is performing high-efficiency calculation, the CPU3 and the corresponding memory 4 consume electric power and convert the electric power into heat, and at this time, the wind brought up by the rotation of the fan can radiate heat from the CPU3, the memory 4 and other components. Three PCIE (Peripheral Component Interconnect Express, a high-speed serial computer expansion bus standard) cards, namely PCIE6, PCIE7 and PCIE8, are placed on the right motherboard of the CPU3 and are inserted on the motherboard through slots. The upper right side is a PSU9 (Power Supply Unit, power supply) for supplying power to the whole equipment, and a temperature sensor 9-1 for monitoring the temperature entering the PSU9 is arranged inside the PSU 9.

It will be appreciated that a single device may typically be configured with a plurality of fans. Each fan may dissipate heat from one or more heat dissipating components. Correspondingly, the device may calculate and determine a current fan rotation speed for each heat dissipation component by using a PID speed regulation formula for each fan, and after calculating the fan rotation speeds applicable to all heat dissipation components for the fan, perform comprehensive processing, such as weighting processing or averaging processing, on the fan rotation speeds calculated by all heat dissipation components, so as to obtain a final fan rotation speed as the current fan rotation speed finally calculated by the fan.

As shown in fig. 2, the second fan calculates a current fan speed 1 according to the PID governing formula applicable to the first CPU, calculates a current fan speed 2 according to the PID governing formula applicable to the second CPU, and finally performs weighting processing on the current fan speed 1 and the current fan speed 2 according to the weights of the two CPUs to obtain the target fan speed.

It follows that for each fan in the device, the rationality of the PID governing equation that it applies to the respective heat sink piece is critical to determining the rationality of the fan speed of that fan.

In the embodiment of the invention, any fan in the device can be used as the current target fan, and the correlation coefficient in the PID speed regulation formula can be sequentially determined for each heat dissipation component responsible for heat dissipation of the current target fan. Specifically, for the current target fan, an initial PID governing formula may be first configured for the current target heat sink element that matches the current target fan. It will be appreciated that the initial PID governing formulas for the corresponding configurations may also be different for different types of current target heat sink assemblies. In the initial PID speed regulation formula, the target speed regulation parameter is unknown, and the value of the target speed regulation parameter needs to be calculated in a certain mode.

S120, under the condition that the current target heat dissipation part reaches the set working condition through the speed regulation operation of the current target fan, acquiring the related fan rotating speed of the current target fan and the related part temperature of the current target heat dissipation part.

The set working condition can be a working condition type that the current target heat dissipation part is cooled to be stable by adjusting the fan rotating speed of the current target fan in the parameter adjusting stage. The associated fan speed may be a current target fan speed when the current target heat sink member reaches the set operating condition. The associated component temperature may be a temperature of the current target heat sink component when the current target heat sink component reaches the set operating condition.

Alternatively, each heat dissipation member may be provided with a temperature sensor. The device can acquire the temperature of the heat dissipation part in real time through acquiring a temperature sensor configured at the heat dissipation part.

It is understood that the speed regulation mode of the fan may include a manual speed regulation mode and an automatic speed regulation mode. The manual speed regulation mode, namely the manual control of the current rotating speed of the fan, and the automatic speed regulation mode can automatically calculate the current rotating speed by utilizing a PID speed regulation formula according to the real-time temperature value of each radiating component in the acquisition period.

In the parameter adjusting stage, optionally, the rotation speed of the current target fan can be adjusted by adopting a manual speed adjusting mode, so that the current target heat dissipation component can reach a certain set working condition through the speed adjusting operation of the current target fan. Correspondingly, under different set working conditions, the rotating speed value of the current target fan can be measured and obtained to serve as the rotating speed of the associated fan, and the temperature value of the current target heat dissipation part can be measured and obtained to serve as the temperature of the associated part.

S130, calculating the numerical value of the target speed regulation parameter according to the related fan rotating speed and the related component temperature to obtain a target PID speed regulation formula; the target PID speed regulation formula is used for determining the fan rotating speed applicable to the current target cooling component by the current target fan.

The target PID speed regulation formula is that the target speed regulation parameter is a PID speed regulation formula with known quantity.

When the current target cooling part dissipates heat to the set working condition through the speed regulation operation of the current target fan, the related fan rotating speed and the related part temperature under the set working condition can reflect the linear proportional relation between the fan rotating speed and the part temperature change and the like, so that the numerical value of the target speed regulation parameter can be rapidly and reasonably calculated according to the related fan rotating speed and the related part temperature under the set working condition.

Accordingly, after the target PID speed regulation formula is obtained, the target PID speed regulation formula can be formally put into equipment for use, so that the equipment determines the fan rotating speed suitable for the current target fan to the current target radiating component according to the target PID speed regulation formula.

Example two

Fig. 3 is a flowchart of a fan speed adjustment parameter determination method according to a second embodiment of the present invention, which is implemented based on the foregoing embodiment, and in this embodiment, several specific alternative implementations of determining an initial PID speed adjustment formula, an obtained associated fan speed and an associated component temperature, and calculating a value of a target speed adjustment parameter are provided. Accordingly, as shown in fig. 3, the method of this embodiment may include:

s210, acquiring a component specification temperature value of the current target heat dissipation component.

The component specification temperature value may be a rated temperature value of a current target heat dissipating component, which is generally referred to as SPEC (Specifications).

It will be appreciated that different types of heat sink components may also have different specified nominal temperature specifications. Illustratively, the rated temperature specification of the CPU is typically around 100 degrees and the rated temperature specification of the memory is typically around 85 degrees.

S220, generating a target temperature value of the initial PID speed regulation formula according to the component specification temperature value of the current target heat radiation component.

S230, generating the initial PID speed regulation formula according to the target temperature value and each target speed regulation parameter configuration.

The target temperature value may be a temperature value of the current target heat dissipating component that can stably operate, and may also be referred to as a temperature target value of the current target heat dissipating component, i.e., SP (SetPoint).

It can be understood that when the working temperature of the heat dissipation part is lower than the rated temperature thereof, the continuous and stable operation of the heat dissipation part can be ensured, so that the continuous and stable operation of the equipment is ensured, but the load of the heat dissipation part can suddenly become larger or smaller, the temperature of the heat dissipation part can also be rapidly increased, the temperature exceeds the specification temperature in a short time, the phenomenon is called temperature overshoot, which is an operation problem frequently existing in the design of the equipment, and can cause frequent alarm and frequency reduction of the equipment, even downtime, and seriously affect the normal operation of the service carried by the equipment. Therefore, the temperature of the heat dissipation part can be stabilized at a certain temperature value below the rated temperature by adjusting the rotation speed of the fan, which is called a target temperature value, when the temperature of the heat dissipation part exceeds the target temperature value, the rotation speed of the fan can be increased by a PID speed regulation formula to quickly reduce the temperature, so that the temperature overshoot problem of the heat dissipation part can be avoided.

In general, the undetermined coefficient of the initial PID governing formula may include target governing parameters such as a proportional coefficient parameter, an integral coefficient parameter, and a differential coefficient parameter, and the application of the target temperature value may be involved in the initial PID governing formula, and specifically, the fan governing strategy under the condition that the proportional coefficient parameter fails may be determined together according to the target temperature value and the integral coefficient parameter included in the target governing parameter. Since the component specification temperature values of the respective heat radiating components are different, the target temperature values set for the respective heat radiating components may be different. Correspondingly, when the initial PID speed regulation formula is configured and generated, the component specification temperature value of the current target heat dissipation component can be firstly obtained for the current target heat dissipation component, and the safety temperature value is subtracted as the target temperature value of the initial PID speed regulation formula applicable to the current target heat dissipation component on the basis of the component specification temperature value, so that the initial PID speed regulation formula is finally generated according to the target temperature value and each target speed regulation parameter configuration.

Alternatively, the safe temperature values of the different heat dissipating components may be the same or different. For example, the safe temperature value of the CPU may be set to 15 degrees, the safe temperature value of the memory may be set to 20 degrees, etc., and may be specifically set according to factors such as temperature sensitivity of the heat dissipation component, etc., and the embodiment of the present invention does not limit specific values of the safe temperature value.

In an optional embodiment of the present invention, the target speed regulation parameter may include a scaling factor parameter, the set working conditions may include a first set working condition and a second set working condition that are achieved by pressurizing the current target heat dissipation component independently in a low-temperature working temperature environment, and the set working conditions may further include a third set working condition that is achieved by pressurizing the whole machine in the low-temperature working temperature environment.

The scaling factor parameter may be abbreviated as kp, and the fan rotation speed may be controlled according to a difference between a current sampling temperature reading value of the current target heat dissipation component and a last sampling temperature value of the current target heat dissipation component, so that the fan can quickly change the rotation speed, and adapt to the current component temperature. The first setting condition and the second setting condition may be stable conditions that the fan rotation speed is controlled to radiate the current target radiating component after the current target radiating component is individually pressurized in the low-temperature working temperature environment. The third set working condition may be a stable working condition achieved by controlling the rotation speed of the fan to radiate the current target radiating component after pressurizing the whole equipment in a low-temperature working temperature environment.

Accordingly, calculating the value of the target speed adjustment parameter based on the associated fan speed and the associated component temperature may include the operations of:

s240, determining a first associated fan speed and a first associated component temperature associated with the first set working condition, and a second associated fan speed and a second associated component temperature associated with the second set working condition.

The first related fan rotation speed may be a rotation speed of the current target fan after the current target heat dissipation part reaches the first set working condition. The first associated component temperature may be a temperature of the current target heat sink component after the current target heat sink component reaches the first set operating condition. The second associated fan speed may be a current target fan speed after the current target heat sink member reaches the second set operating condition. The second associated component temperature may be a temperature of the current target heat sink component after the current target heat sink component reaches the second set operating condition.

S250, calculating a first standby proportionality coefficient parameter according to the first associated fan rotating speed, the first associated component temperature, the second associated fan rotating speed and the second associated component temperature.

The first standby scaling factor parameter may be one of standby scaling factor parameters calculated according to the first associated fan speed, the first associated component temperature, the second associated fan speed, and the second associated component temperature.

In an alternative embodiment of the present invention, the calculating the first standby scaling factor parameter according to the first associated fan speed, the first associated component temperature, the second associated fan speed, and the second associated component temperature may include: calculating the first standby scaling factor parameter based on the following formula:

k1＝(PWM2-PWM1)/(T1-T2)

wherein k1 represents the first standby scaling factor parameter, PWM2 represents the second associated fan speed, PWM1 represents the first associated fan speed, T1 represents the first associated component temperature, and T2 represents the second associated component temperature.

Fig. 4 is a schematic diagram of the effect of the second embodiment of the present invention on the effect of the air volume on the whole machine operation of the device under different fan rotation speed gradients. In a specific example, as shown in fig. 4, the higher the rotation speed of the fan in the server device is, the higher the system impedance is, but the actually increased air volume is smaller, the lower the effective air volume ratio that the fan can provide is, the lower the corresponding heat dissipation benefit is, so when the working environment temperature of the device is the lowest temperature, the influence of the change of the rotation speed of the fan on the air volume of the system is the largest.

Specifically, when the value of the scaling factor parameter is determined, the environmental temperature of the device can be first adjusted to a lower temperature, for example, 20 ℃, and meanwhile, the current target fan can be manually adjusted to be full of rotation so as to ensure timely heat dissipation of the current target heat dissipation component. Then, the current target heat sink member is individually pressure-pressurized using the pressurizing software, so that the heat consumption of the current target heat sink member is increased to the maximum power consumption. And then gradually controlling and reducing the rotating speed of the current target fan, and adjusting the rotating speed of the current target fan for a plurality of times, so that the temperature of the current target heat dissipation part is stable and then meets the minimum standard of heat dissipation of the current target heat dissipation part, for example, the temperature of the current target heat dissipation part is reduced to SPEC (part specification temperature value of the current target heat dissipation part) -3 ℃, and the current target heat dissipation part is controlled to reach the first set working condition. When the current target heat dissipation part is determined to reach the first set working condition, recording the current rotating speed PWM1 of the current target fan and the temperature value T1 of the current target heat dissipation part. Further, the rotating speed of the current target fan is increased to PWM2, for example, about 20PWM is increased, and considering the hysteresis of the temperature, the temperature value of the current target heat dissipation part is not changed any more, and the current target heat dissipation part is determined to reach the second set working condition. When the current target heat dissipation part is determined to reach the second set working condition, the temperature value T2 of the current target heat dissipation part is recorded, and at the moment, k1 can be calculated as a first standby scaling factor parameter through a formula k1= (PWM 2-PWM 1)/(T1-T2).

According to the calculation scheme, the numerical value of the first standby proportional coefficient parameter can be accurately calculated through the formula k1, and the accuracy of calculating the first standby proportional coefficient parameter is improved.

S260, determining a third related fan rotating speed and a third related component temperature related to the third set working condition.

The third related fan rotation speed may be a rotation speed of the current target fan after the current target heat dissipation part reaches a third set working condition. The third associated component temperature may be a temperature of the current target heat sink component after the current target heat sink component reaches a third set operating condition.

S270, calculating a second standby proportionality coefficient parameter according to the third related fan rotating speed, the third related component temperature, the second related fan rotating speed and the second related component temperature.

The second standby scaling factor parameter may be another standby scaling factor parameter calculated according to the third related fan speed, the third related component temperature, the second related fan speed, and the second related component temperature.

In an alternative embodiment of the present invention, the calculating the second standby scaling factor parameter according to the third related fan speed, the third related component temperature, the second related fan speed, and the second related component temperature may include: calculating the second standby scaling factor parameter based on the following formula:

k2＝(PWM3-PWM2)/(T2-T3)

Specifically, when the value of the proportionality coefficient parameter is determined, and when the current target heat dissipation part is determined to reach the second set working condition, and after the first standby proportionality coefficient parameter is obtained by calculation, the whole machine of the equipment is pressurized by using pressurizing software, so that the heat consumption of the current equipment is increased to the maximum power consumption. And then the rotating speed of the current target fan is adjusted for a plurality of times, so that the temperature of the current target heat dissipation part is stable and then meets the minimum standard of heat dissipation of the current target heat dissipation part, for example, the temperature of the current target heat dissipation part is reduced to SPEC (part specification temperature value of the current target heat dissipation part) -3 ℃, and the current target heat dissipation part is controlled to reach a third set working condition. When the current target heat dissipation part is determined to reach the third set working condition, recording the current rotating speed PWM3 of the current target fan and the temperature value T3 of the current target heat dissipation part. At this time, k2 can be calculated as the second standby scaling factor parameter by the formula k2= (PWM 3-PWM 2)/(T2-T3).

According to the calculation scheme, the numerical value of the second standby proportional coefficient parameter can be accurately calculated through the formula k2, and the accuracy of calculating the second standby proportional coefficient parameter is improved.

S280, selecting the proportionality coefficient parameter from the first standby proportionality coefficient parameter and the second standby proportionality coefficient parameter according to the magnitude relation of the first standby proportionality coefficient parameter and the second standby proportionality coefficient parameter.

Accordingly, after the first standby scaling factor parameter k1 and the second standby scaling factor parameter k2 are obtained, the magnitude relation of k1 and k2 may be compared, and kp=min { k1, k2}. That is, a parameter having the smallest value may be selected from the first reserve scale factor parameter and the second reserve scale factor parameter as the final scale factor parameter.

In an optional embodiment of the present invention, the target speed regulation parameter further includes an integral coefficient parameter, and the set working conditions include a fourth set working condition when the current target heat dissipation part is in a set temperature interval through heat dissipation of the fan in a high temperature working temperature environment, and a fifth set working condition when the current target heat dissipation part is in a set temperature value through heat dissipation of the fan in a high temperature working temperature environment.

The integral coefficient parameter may be generally referred to as ki, and may be accumulated in time according to a difference between a current temperature value of the current target heat dissipation part and a target temperature value. The larger the value of the integral coefficient parameter is, the more obvious the control effect of the difference value between the current temperature value of the current target heat dissipation part and the target temperature value on the rotating speed of the fan is. The fourth set working condition may be a stable working condition in which the current target heat dissipation component is dissipated by the current target fan under the high-temperature working temperature environment, so that the temperature of the current target heat dissipation component is in the set temperature range. The fifth set working condition may be a stable working condition that after the current target heat dissipation component is in the fourth set working condition under the high-temperature working temperature environment, the current target fan dissipates heat of the current target heat dissipation component after pressurizing the whole machine, so that the temperature of the current target heat dissipation component is in a set temperature value. The set temperature interval may be set according to actual requirements, for example, the interval of [ SP-5 ℃, sp+5℃ ] and similarly, the set temperature value may be set according to actual requirements, for example, the interval may be about SPEC-3 ℃, and the specific interval range of the set temperature interval and the specific temperature value of the set temperature value are not limited in the embodiment of the present invention.

Correspondingly, the calculating the value of the target speed regulation parameter according to the related fan rotating speed and the related component temperature further comprises the following operations:

s290, determining a fourth related fan rotating speed related to the fourth set working condition and a fifth related fan rotating speed related to the fifth set working condition.

The fourth related fan rotation speed may be a rotation speed of the current target fan after the current target heat dissipation part reaches the fourth set working condition. The fifth associated fan speed may be the current target fan speed after the current target heat sink member reaches the fifth set operating condition.

S2A0, determining the integral coefficient parameter according to the proportional coefficient parameter, the fourth related fan rotating speed and the fifth related fan rotating speed.

In an alternative embodiment of the present invention, the determining the integral coefficient parameter according to the scaling factor parameter, the fourth associated fan speed, and the fifth associated fan speed may include: calculating the integral coefficient parameter based on the following formula:

ki＝2kp/((PWM5-PWM4)+2kp)

Specifically, when the integral coefficient parameter is determined, the overall environmental temperature of the device can be firstly adjusted to the highest temperature that the device can support, and then the current target fan is adjusted to radiate the current target radiating component, so that the temperature of the current target radiating component is stabilized at about a set temperature interval such as an interval of [ SP-5 ℃, SP+5], and the current target radiating component reaches a fourth set working condition. When the current target heat dissipation part is determined to reach the fourth set working condition, the rotating speed PWM of the current target fan is recorded as PWM4, and the temperature of the current target heat dissipation part is recorded as T4. Further, the whole power consumption of the device is pressurized at the same time, and the temperature T5 of the current target heat dissipation part is stabilized at a set temperature value, such as SPEC-3 ℃ and the like, by adjusting the rotating speed of the current target fan to PWM5, and the set temperature value can be defined according to the allowance. Correspondingly, ki can be calculated according to the formula (1/ki-1) x 2 x kp= (PWM 5-PWM 4). Wherein, (1/ki-1) x 2 is the failure interval of ki, and in the failure interval of ki, the rotation speed of the current target fan can be controlled according to kp calculation. Further, from the formula (1/ki-1) ×2kp= (PWM 5-PWM 4), ki=2kp/((PWM 5-PWM 4) +2kp) can be obtained, and ki is calculated as an integral coefficient parameter.

In an alternative embodiment of the present invention, the target governor parameter may further include a differential coefficient parameter.

The differential coefficient may be simply referred to as kd, which can adjust the rotation speed of the fan according to the temperature change rate, and the larger the value of the differential coefficient, the faster the fan adjustment changes, but the vibration may be caused.

Correspondingly, the calculating the value of the target speed regulation parameter according to the related fan rotating speed and the related component temperature may include:

S2B0, setting the differential coefficient parameter as a default value.

Alternatively, the default value may be 0.

It will be appreciated that since excessive values of the differential coefficient parameter may cause oscillations, the value of the differential coefficient parameter may be set to 0 for the initial PID tuning equation, and the value of the tuning differential coefficient parameter may be used in later adjustments to each target tuning parameter.

S2C0, constructing a target PID speed regulation formula according to the numerical value of the target speed regulation parameter and the initial PID speed regulation formula.

Correspondingly, after kp, ki and kd are obtained, a target PID speed regulation formula can be constructed according to kp, ki and kd.

Alternatively, the initial PID governing equation can be found as follows: PWM (k) =pwm (k-1) +kp [ T (k) -T (k-1) ]+ki [ T (k) -SP ] +kd [ (T (k) -T (k-1)) - (T (k-1) -T (k-2)) ]. Wherein, PWM (k) represents the PWM value of the current target fan calculated according to the temperature change of the current target heat dissipation part, the PWM value of the fan can be used as the rotating speed value of the fan, PWM (k-1) represents the PWM value of the current target fan of the last sampling period, T (k) represents the current sampling temperature value of the current target heat dissipation part, and T (k-1) represents the last sampling temperature value of the current target heat dissipation part. kp is a proportional coefficient parameter, ki is an integral coefficient parameter, and kd is a differential coefficient parameter. Optionally, the sampling period is generally 1 time/s, which can be specifically set according to actual requirements, and the embodiment of the present invention does not limit specific values of the sampling period. Correspondingly, after the kp, ki and kd in the initial PID speed regulation formula are assigned and parameters are adjusted, the initial PID speed regulation formula can become a target PID speed regulation formula.

In an alternative embodiment of the present invention, after calculating the value of the target speed regulation parameter according to the associated fan speed and the associated component temperature, the method may further include: acquiring fan oscillation related data and temperature fluctuation related data in the process of verifying fan speed regulation parameters of the current target fan; and adjusting the numerical value of the target speed regulation parameter according to the fan oscillation related data and the temperature fluctuation related data.

The fan vibration related data may be vibration data of each fan in the process of verifying the fan speed regulation parameters, for example, but not limited to vibration frequency and vibration time of the fan. The temperature fluctuation-related data may be temperature fluctuation data of each heat dissipation part in the process of verifying the fan speed regulation parameter, and may include, but is not limited to, fluctuation frequency and fluctuation time of the temperature of each heat dissipation part, for example. As long as the vibration condition of the fan and the temperature fluctuation condition of the heat dissipation component can be reflected, the embodiment of the invention does not limit the specific data type and data content of the fan vibration related data and the temperature fluctuation related data.

It should be noted that, the above technical solution only determines the specific value of each target speed regulation parameter in the target PID speed regulation formula. The processor or controller of the device is typically complex to implement the automatic speed regulation logic of the fan according to a target PID speed regulation formula. For example, in the process that the processor or the controller of the device implements the automatic speed regulation logic of the fan according to the target PID speed regulation formula, the device may calculate a plurality of rotational speeds adapted to each heat dissipation part by the current fan according to the target PID speed regulation formula, and calculate a final fan rotational speed of the current fan according to weights for the plurality of rotational speeds adapted to each heat dissipation part by the current fan. After all the fans calculate the final fan rotation speed, the final fan rotation speed is comprehensively processed again for all the fans, for example, the maximum fan rotation speed is taken as the current rotation speed of each fan, or the final fan rotation speed is weighted for all the fans. Therefore, the rationality of each target speed regulation parameter in the target PID speed regulation formula directly influences the rationality of the whole fan speed regulation logic.

It can be understood that verification is required according to the accuracy and rationality of the target speed regulation parameters tested and calculated under different working conditions. Therefore, after the target speed regulation parameter is obtained through preliminary calculation, in order to further improve the accuracy and rationality of the target debugging parameter, the target speed regulation parameter can be substituted into the initial PID speed regulation formula to obtain the target PID speed regulation formula, and the fan speed regulation parameter verification flow is expanded by utilizing the target PID speed regulation formula. In the verification process of the fan speed regulating parameter, a processor or a controller of the equipment automatically calculates the rotating speed of the fan according to a target PID speed regulating formula, and automatically controls the rotating speed of the fan according to the calculated rotating speed of the fan so as to realize automatic speed regulating logic of the fan. The same fan speed regulation parameter verification mode can be adopted for all fans. Correspondingly, for one fan, fan vibration related data of the fan and temperature fluctuation related data of related radiating components can be obtained, and vibration conditions of temperatures of the fan and the related radiating components are determined according to the fan vibration related data and the temperature fluctuation related data, so that rationality of each target speed regulation parameter is determined according to the vibration conditions of temperatures of the fan and each related radiating component, and further, the numerical value of the target speed regulation parameter is adaptively adjusted.

In an alternative embodiment of the present invention, the target speed regulation parameter may include a proportional coefficient parameter, an integral coefficient parameter, and a differential coefficient parameter; the adjusting the value of the target speed regulation parameter according to the fan oscillation related data and the temperature fluctuation related data may include: under the condition that the high-frequency oscillation time of the target fan exceeds a first time threshold value and the temperature fluctuation time of the target heat dissipation part exceeds a second time threshold value, gradually adjusting the numerical value of the proportional coefficient parameter according to a parameter adjustment step until the high-frequency oscillation time of the target fan is smaller than a third time threshold value and the temperature fluctuation time of the target heat dissipation part is smaller than a fourth time threshold value; reducing the value of the integral coefficient parameter under the condition that the current component temperature of the target heat dissipation component exceeds a preset component temperature threshold value is determined; and in the case that the temperature fluctuation time of the target heat dissipation part is determined to be larger than a fifth time threshold and smaller than a sixth time threshold, or in the case that the current part temperature of the target heat dissipation part is determined to reach a set temperature value, increasing the value of the differential coefficient parameter.

The target fan may need to verify whether the target speed regulation parameter in the target PID speed regulation formula has a reasonable value. The target heat sink member may be a relevant heat sink member to which the target fan is capable of performing heat dissipation processing. Specific values of the first time threshold, the second time threshold, the third time threshold, the fourth time threshold, the fifth time threshold and the sixth time threshold may be set according to actual needs, for example, the first time threshold is 2 minutes, the second time threshold is 1 minute, the third time threshold is 30 seconds, the fourth time threshold is 30 seconds, the fifth time threshold is 1 minute, the sixth time threshold is 1 minute, etc., the values of part of the time thresholds may be the same, or the values of the time thresholds may all be different, and the embodiment of the present invention does not limit the specific values of the time thresholds. The preset component temperature threshold may be a temperature value that is capable of characterizing that the scaling factor parameter has a small effect in the failure interval of the integration factor parameter, for example, a temperature value of SP+1/ki. Typically, when the temperature value of the current target heat sink exceeds SP+1/ki, it is indicated that the temperature of the current target heat sink is about to exceed the pre-warning value.

Specifically, the target speed regulation parameter obtained by preliminary calculation can be output to a speed regulation logic parameter of a device processor or a controller, and a verification process of the target speed regulation parameter is started at a lower temperature supported by the device. When the working environment temperature of the equipment is lower, the power consumption of the whole machine is increased under the pressure and the power consumption of each heat dissipation part is pressurized independently under the low-temperature environment. In the pressurizing process, the target fans automatically regulate the speed, and whether the temperatures of the target radiating components fluctuate up and down or not and whether the target fans vibrate up and down at high frequency or not are observed. If the internal part temperature and the fan rotating speed vibrate rapidly at high frequency for a long time, the value of the proportionality coefficient parameter is too high at low temperature, and the target fan cannot find a balance point, so that the temperature stability of the target radiating part is ensured at a certain fan rotating speed. At this time, the values of the scaling parameters in the target PID governing equation of the target fan may be adjusted down step by step according to the parameter adjustment steps, for example, the scaling parameters may be reduced step by step with 0.5 as the step. And repeating the steps until the parameter value of the proportionality coefficient meeting the requirement is found, so that the rotation speed of the target fan and the temperature of the target heat dissipation part cannot vibrate for a long time at high frequency.

Accordingly, if the target heat sink temperature exceeds a preset component temperature threshold, such as SP+1/ki, during the target fan automatic speed adjustment process, the target fan speed will be increased by ki (Ttemp-SP) PWM every sampling period. Where Ttemp represents the current temperature of the target heat sink. The temperature change of the target heat dissipation part is slow, so that the target fan can meet the current heat dissipation requirement of the target heat dissipation part, but the temperature hysteresis is adopted, and the ki value is effective every second, so that even if the temperature of the target heat dissipation part is stabilized for a period of time which is greater than the SP+1/ki value, the rotating speed of the target fan can be still raised to be high in a short time, and the requirement of speed regulation of the target fan is not met. At this time, the value of the integral coefficient parameter ki can be reduced appropriately, so that the value of (1/ki-1) x 2, which is the non-effective value interval ki, becomes larger, and further the speed increase of the fan caused by the proportional coefficient parameter can meet the heat dissipation requirement of the target heat dissipation component in the enlarged ki failure interval.

Accordingly, if the target fan and the target heat sink are relatively stable in temperature as a whole while the scaling parameters are being adjusted, but there is occasional occurrence of a small period of temperature oscillations, the differential coefficient parameter value may be increased appropriately, for example, from a gradient of 0 to 0.5, until no wide range oscillations occur after the target heat sink and the target fan are stable as a whole. Or when the temperature of the target heat dissipation part exceeds SPEC-3 ℃ in the speed regulation process of the target fan, the value of the differential coefficient parameter can be properly increased, so that the rotating speed of the target fan is rapidly increased to rapidly cool the target heat dissipation.

Fig. 5 is a flow chart of a device executing fan speed regulation logic according to a target PID speed regulation formula according to a second embodiment of the present invention. In a specific example, as shown in fig. 5, after the target PID tuning formula is determined, the target PID tuning formula may be input to a fan controller or a processor of the device, and the controller may be, for example, a BMC (Baseboard Management Controller, board level management controller) controller, and the processor may be a CPU or the like. Correspondingly, the controller or the processor of the device for processing the fan speed regulating logic reads the temperature of the corresponding component first, so as to input the read temperature into the target PID speed regulating formula, determine the latest fan rotating speed according to the calculation result of the target PID speed regulating formula, and control the operation of the fan according to the latest fan rotating speed, so that the latest rotating speed of the fan is executed.

It will be appreciated that in the target PID tuning formula, PWM (k-1) and PWM (k) are integers, but since the corresponding calculated values of the other parameters kp, ki, kd are generally decimal, and the effective number of each parameter is 5 bits or more. Correspondingly, when the processor or the controller of the device calculates the rotation speed of the latest fan by using the target PID speed regulation formula and regulates the fan, if the increment value of kp [ T (k) -T (k-1) ] +ki [ T (k) -SP ] +kd [ (T (k) -T (k-1)) - (T (k-1) -T (k-2)) ] calculated according to the target PID speed regulation formula is a decimal, the sum of the increment values can be rounded downwards, for example 100.568- >100, so as to ensure that the calculated PWM (k) is an integer, avoid the failure of fan speed regulation logic and improve the stability and reliability of the operation of the fan.

In order to more clearly describe the technical solution provided by the embodiment of the present invention, the embodiment of the present invention specifically describes the specific flow of the above-mentioned fan speed regulation parameter determination method by taking a server device as an example. The PID speed regulation calculation formula adopted by the BMC in the server refers to the following expression: PWM (k) =pwm (k-1) +kp [ T (k) -T (k-1) ]+ki [ T (k) -SP ] +kd [ (T (k) -T (k-1)) - (T (k-1) -T (k-2)) ]. Fig. 6 is a schematic flow chart of determining a scaling factor parameter according to an embodiment of the present invention. In a specific example, as shown in fig. 6, in the initial stage of the scaling factor parameter, the environmental temperature of the server is adjusted to a lower temperature that is possible to work, for example, 20 ℃, and a full rotation fan is required to ensure heat dissipation, and a certain component is pressurized by using pressurizing software to increase the heat consumption to the maximum power consumption. Then, the fan speed is gradually reduced, the system fan is adjusted for a plurality of times to enable the temperature of the component to be stable and then the minimum standard (such as SPEC-3 ℃) of the heat dissipation of the component is met, and the current fan speed PWM1 and the component temperature value T1 are recorded. Further, the fan speed is increased (about 20 PWM) to PWM2, the current temperature T2 is recorded when the temperature reading value of the component is not changed, and k1= (PWM 2-PWM 1)/(T1-T2) is calculated. Then, the server total pressure is increased to the maximum pressure, the above operation is repeated, and k2= (PWM 3-PWM 2)/(T2-T3) is calculated. Finally kp=min { k1, k2}.

Fig. 7 is a schematic flow chart of determining an integral coefficient parameter according to an embodiment of the present invention. In a specific example, as shown in fig. 7, in the initial stage of the integral coefficient parameter, the temperature of the whole environment of the server is adjusted to the highest temperature supported by the server, the fan is adjusted, the temperature of the component is stabilized to be about SP-5 ℃, the current fan PWM is recorded as PWM4, and the component temperature is recorded as T3. Further, the overall power consumption of the server is pressurized at the same time, the component temperature T4 is stabilized at SPEC-3 by adjusting the rotation speed of the fan to PWM5, and ki=2kp/((PWM 5-PWM 4) +2kp) is calculated.

Further, a parameter verification phase is entered. Fig. 8 is a schematic flow chart for verifying a target speed regulation parameter according to an embodiment of the present invention. In a specific example, as shown in fig. 8, the calculated target speed regulation parameter may be output to a server BMC speed regulation logic parameter, and verification is started at a lower temperature supported by the server, and power consumption pressurization is performed on each heat dissipation component separately and at a low temperature under increased pressure for power consumption of the whole machine, so that the fan automatically regulates speed, and whether the component temperature fluctuates up and down and whether the fan oscillates up and down at high frequency are observed. If the temperature and the fan rotation speed vibrate rapidly and high for a long time, the kp value is too high at low temperature, and the fan cannot find a balance point, so that the temperature stability of the heat dissipation part is ensured at a certain fan rotation speed. At this time, the kp value may be gradually reduced in accordance with the parameter adjustment steps, and this is repeated until a kp value satisfying the requirement is found.

During the fan auto-speed adjustment process, if the component temperature exceeds the SP+1/ki value, the fan speed calculated by the BMC will increase by the PWM of ki (Temp-SP) every sampling period. Due to the slow component temperature changes, the fan actually meets the current heat dissipation requirements, but the ki value will still be effective every second. Therefore, even if the temperature is stabilized to be higher than the SP+1/ki value for a period of time, the fan rotation speed still rises to be high in a short time, and the requirement of fan speed regulation is not met. At this time, the ki value can be properly reduced, so that the interval of the ki value which is not effective becomes larger, and the speed increase of the fan caused by kp can meet the heat dissipation requirement of the component in the interval.

If the temperature of the whole fan and the component is stable during kp adjustment, but there is occasional temperature oscillation for a short period of time, the kd value can be increased appropriately, for example, from 0-0.5 gradient, until the whole fan and the component are stable and no large-scale oscillation occurs. Or if the temperature of the component exceeds SPEC-3 ℃ in the fan speed regulation process, the kd value can be increased appropriately to avoid the problem of temperature early warning caused by temperature overshoot.

It will be appreciated that the more complex the device, the more its internal component types and numbers. And the heat dissipation performance and the thermal reaction time of different components are greatly different. It is therefore necessary to ensure that the applicable fan speed parameters can be determined as soon as possible for all components. The fan speed regulation parameter determining method provided by the embodiment of the invention can meet the fan speed regulation parameter defining method of any component, can improve the efficiency of fan speed regulation parameter definition, can ensure the stable operation of the fan, and can greatly improve the heat dissipation reliability of the fan.

It should be noted that any permutation and combination of the technical features in the above embodiments also belong to the protection scope of the present invention.

Example III

Fig. 9 is a schematic diagram of a fan speed regulation parameter determining apparatus according to a third embodiment of the present invention, as shown in fig. 9, where the apparatus includes: an initial PID governing equation determination module 310, an associated rotational speed temperature acquisition module 320, and a target governing parameter calculation module 330, wherein:

an initial PID governing formula determination module 310, configured to determine an initial PID governing formula configured for a current target heat sink component for which a current target fan matches; wherein the initial PID speed regulation formula comprises target speed regulation parameters;

the related rotation speed temperature obtaining module 320 is configured to obtain a related fan rotation speed of the current target fan and a related component temperature of the current target heat dissipation component when it is determined that the current target heat dissipation component reaches a set working condition through a speed regulation operation of the current target fan;

a target speed regulation parameter calculation module 330, configured to calculate a value of the target speed regulation parameter according to the associated fan speed and the associated component temperature, so as to obtain a target PID speed regulation formula;

Optionally, the initial PID governing formula determination module 310 is specifically configured to: acquiring a component specification temperature value of the current target heat dissipation component; generating a target temperature value of the initial PID speed regulation formula according to the component specification temperature value of the current target radiating component; and generating the initial PID speed regulation formula according to the target temperature value and each target speed regulation parameter configuration.

Optionally, the target speed regulation parameter includes a scaling factor parameter, the set working conditions include a first set working condition and a second set working condition which are achieved by independently pressurizing the current target heat dissipation component in a low-temperature working temperature environment, and the set working conditions further include a third set working condition which is achieved by pressurizing the whole machine in the low-temperature working temperature environment; the target speed regulation parameter calculation module 330 is specifically configured to: determining a first associated fan speed and a first associated component temperature associated with the first set of operating conditions, and a second associated fan speed and a second associated component temperature associated with the second set of operating conditions; calculating a first standby scaling factor parameter according to the first associated fan speed, the first associated component temperature, the second associated fan speed and the second associated component temperature; determining a third associated fan speed and a third associated component temperature associated with the third set of operating conditions; calculating a second standby scaling factor parameter according to the third associated fan speed, the third associated component temperature, the second associated fan speed and the second associated component temperature; and selecting the proportional coefficient parameter from the first standby proportional coefficient parameter and the second standby proportional coefficient parameter according to the magnitude relation between the first standby proportional coefficient parameter and the second standby proportional coefficient parameter.

Optionally, the target speed regulation parameter calculation module 330 is specifically configured to: calculating the first standby scaling factor parameter based on the following formula: k1 = (PWM 2-PWM 1)/(T1-T2); wherein k1 represents the first standby scaling factor parameter, PWM2 represents the second associated fan speed, PWM1 represents the first associated fan speed, T1 represents the first associated component temperature, and T2 represents the second associated component temperature; calculating the second standby scaling factor parameter based on the following formula: k2 = (PWM 3-PWM 2)/(T2-T3); wherein k2 represents the second standby scaling factor parameter, PWM3 represents the third associated fan speed, and T3 represents the third associated component temperature.

Optionally, the target speed regulation parameter further includes an integral coefficient parameter, and the set working conditions include a fourth set working condition when the current target heat dissipation component is in a set temperature interval through heat dissipation of the fan in a high-temperature working temperature environment, and a fifth set working condition when the current target heat dissipation component is in a set temperature value through heat dissipation of the fan in the high-temperature working temperature environment; the target speed regulation parameter calculation module 330 is specifically configured to: determining a fourth related fan speed related to the fourth set working condition and a fifth related fan speed related to the fifth set working condition; and determining the integral coefficient parameter according to the proportionality coefficient parameter, the fourth related fan rotating speed and the fifth related fan rotating speed.

Optionally, the target speed regulation parameter calculation module 330 is specifically configured to: calculating the integral coefficient parameter based on the following formula: ki=2 kp/((PWM 5-PWM 4) +2kp); where ki denotes the integral coefficient parameter, kp denotes the proportional coefficient parameter, PWM4 denotes the fourth associated fan speed, and PWM5 denotes the fifth associated fan speed.

Optionally, the fan speed regulation parameter determining device further includes a target speed regulation parameter module for: acquiring fan oscillation related data and temperature fluctuation related data in the process of verifying fan speed regulation parameters of the current target fan; and adjusting the numerical value of the target speed regulation parameter according to the fan oscillation related data and the temperature fluctuation related data.

Optionally, the target speed regulation parameter includes a proportional coefficient parameter, an integral coefficient parameter and a differential coefficient parameter; the target speed regulation parameter module is specifically used for: under the condition that the high-frequency oscillation time of the target fan exceeds a first time threshold value and the temperature fluctuation time of the target heat dissipation part exceeds a second time threshold value, gradually adjusting the numerical value of the proportional coefficient parameter according to a parameter adjustment step until the high-frequency oscillation time of the target fan is smaller than a third time threshold value and the temperature fluctuation time of the target heat dissipation part is smaller than a fourth time threshold value; reducing the value of the integral coefficient parameter under the condition that the current component temperature of the target heat dissipation component exceeds a preset component temperature threshold value is determined; and in the case that the temperature fluctuation time of the target heat dissipation part is determined to be larger than a fifth time threshold and smaller than a sixth time threshold, or in the case that the current part temperature of the target heat dissipation part is determined to reach a set temperature value, increasing the value of the differential coefficient parameter.

The fan speed regulation parameter determining device can execute the fan speed regulation parameter determining method provided by any embodiment of the application, and has the corresponding functional modules and beneficial effects of the executing method. Technical details not described in detail in this embodiment may be referred to the fan speed adjustment parameter determination method provided in any embodiment of the present application.

Since the fan speed adjustment parameter determining device described above is a device capable of executing the fan speed adjustment parameter determining method according to the embodiment of the present application, those skilled in the art will be able to understand the specific implementation of the fan speed adjustment parameter determining device according to the embodiment of the present application and various modifications thereof based on the fan speed adjustment parameter determining method described in the embodiment of the present application, so how the fan speed adjustment parameter determining device implements the fan speed adjustment parameter determining method according to the embodiment of the present application will not be described in detail herein. The device adopted by the fan speed regulation parameter determination method in the embodiment of the application belongs to the scope of protection required by the application as long as the person skilled in the art implements the device.

Example IV

Fig. 10 shows a schematic diagram of the structure of an electronic device 10 that may be used to implement an embodiment of the application. Electronic devices are intended to represent various forms of digital computers, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. Electronic equipment may also represent various forms of mobile devices, such as personal digital processing, cellular telephones, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions, are meant to be exemplary only, and are not meant to limit implementations of the applications described and/or claimed herein.

As shown in fig. 10, the electronic device 10 includes at least one processor 11, and a memory, such as a Read Only Memory (ROM) 12, a Random Access Memory (RAM) 13, etc., communicatively connected to the at least one processor 11, in which the memory stores a computer program executable by the at least one processor, and the processor 11 may perform various appropriate actions and processes according to the computer program stored in the Read Only Memory (ROM) 12 or the computer program loaded from the storage unit 18 into the Random Access Memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the electronic device 10 may also be stored. The processor 11, the ROM 12 and the RAM 13 are connected to each other via a bus 14. An input/output (I/O) interface 15 is also connected to bus 14.

Various components in the electronic device 10 are connected to the I/O interface 15, including: an input unit 16 such as a keyboard, a mouse, etc.; an output unit 17 such as various types of displays, speakers, and the like; a storage unit 18 such as a magnetic disk, an optical disk, or the like; and a communication unit 19 such as a network card, modem, wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information/data with other devices via a computer network, such as the internet, and/or various telecommunication networks.

The processor 11 may be a variety of general and/or special purpose processing components having processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), various specialized Artificial Intelligence (AI) computing chips, various processors running machine learning model algorithms, digital Signal Processors (DSPs), and any suitable processor, controller, microcontroller, etc. The processor 11 performs the various methods and processes described above, such as the fan speed parameter determination method.

In some embodiments, the fan speed parameter determination method may be implemented as a computer program tangibly embodied on a computer-readable storage medium, such as the storage unit 18. In some embodiments, part or all of the computer program may be loaded and/or installed onto the electronic device 10 via the ROM 12 and/or the communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the fan speed parameter determination method described above may be performed. Alternatively, in other embodiments, the processor 11 may be configured to perform the fan speed parameter determination method in any other suitable manner (e.g., by means of firmware).

Various implementations of the systems and techniques described here above may be implemented in digital electronic circuitry, integrated circuit systems, field Programmable Gate Arrays (FPGAs), application Specific Integrated Circuits (ASICs), application Specific Standard Products (ASSPs), systems On Chip (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs, the one or more computer programs may be executed and/or interpreted on a programmable system including at least one programmable processor, which may be a special purpose or general-purpose programmable processor, that may receive data and instructions from, and transmit data and instructions to, a storage system, at least one input device, and at least one output device.

A computer program for carrying out methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the computer programs, when executed by the processor, cause the functions/acts specified in the flowchart and/or block diagram block or blocks to be implemented. The computer program may execute entirely on the machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.

In the context of the present invention, a computer-readable storage medium may be a tangible medium that can contain, or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. The computer readable storage medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. Alternatively, the computer readable storage medium may be a machine readable signal medium. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

To provide for interaction with a user, the systems and techniques described here can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and a pointing device (e.g., a mouse or a trackball) through which a user can provide input to the electronic device. Other kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form, including acoustic input, speech input, or tactile input.

The systems and techniques described here can be implemented in a computing system that includes a background component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such background, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), wide Area Networks (WANs), blockchain networks, and the internet.

The computing system may include clients and servers. The client and server are typically remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. The server can be a cloud server, also called a cloud computing server or a cloud host, and is a host product in a cloud computing service system, so that the defects of high management difficulty and weak service expansibility in the traditional physical hosts and VPS service are overcome.

Claims

1. A method for determining a fan speed adjustment parameter, comprising:

2. The method of claim 1, wherein determining an initial PID tuning formula for a current target heat sink component configuration for a current target fan match comprises:

3. The method of claim 1, wherein the target speed regulation parameter comprises a scaling factor parameter, the set conditions comprise a first set condition and a second set condition achieved by pressurizing the current target heat sink element independently in a low temperature operating temperature environment, the set conditions further comprise a third set condition achieved by pressurizing the whole engine in the low temperature operating temperature environment;

4. The method of claim 3, wherein said calculating a first backup scaling factor parameter based on said first associated fan speed, said first associated component temperature, said second associated fan speed, and said second associated component temperature comprises:

k1＝(PWM2-PWM1)/(T1-T2)

k2＝(PWM3-PWM2)/(T2-T3)

5. The method of claim 3 or 4, wherein the target speed regulation parameter further comprises an integral coefficient parameter, the set condition comprises a fourth set condition when the current target heat sink member is in a set temperature interval by fan heat dissipation in a high temperature operating temperature environment, and a fifth set condition when the current target heat sink member is in a set temperature value by fan heat dissipation in a high temperature operating temperature environment;

6. The method of claim 5, wherein said determining said integral factor parameter from said scaling factor parameter, said fourth associated fan speed, and said fifth associated fan speed comprises:

Calculating the integral coefficient parameter based on the following formula:

ki＝2kp/((PWM5-PWM4)+2kp)

7. The method of claim 1, further comprising, after said calculating the value of the target governor parameter based on the associated fan speed and the associated component temperature:

acquiring fan oscillation related data and temperature fluctuation related data in the process of verifying fan speed regulation parameters of the current target fan;

8. The method of claim 7, wherein the target governor parameter includes a proportional coefficient parameter, an integral coefficient parameter, and a differential coefficient parameter;

under the condition that the high-frequency oscillation time of the target fan exceeds a first time threshold value and the temperature fluctuation time of the target heat dissipation part exceeds a second time threshold value, gradually adjusting the numerical value of the proportional coefficient parameter according to a parameter adjustment step until the high-frequency oscillation time of the target fan is smaller than a third time threshold value and the temperature fluctuation time of the target heat dissipation part is smaller than a fourth time threshold value;

Reducing the value of the integral coefficient parameter under the condition that the current component temperature of the target heat dissipation component exceeds a preset component temperature threshold value is determined;

and in the case that the temperature fluctuation time of the target heat dissipation part is determined to be larger than a fifth time threshold and smaller than a sixth time threshold, or in the case that the current part temperature of the target heat dissipation part is determined to reach a set temperature value, increasing the value of the differential coefficient parameter.

9. A fan speed adjustment parameter determination apparatus, comprising:

10. An electronic device, the electronic device comprising:

at least one processor; and

a memory communicatively coupled to the at least one processor; wherein,

the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the fan speed parameter determination method of any one of claims 1-8.

11. A computer readable storage medium storing computer instructions for causing a processor to perform the method of determining a fan speed adjustment parameter of any one of claims 1-8.