CN106681458A - PID fan regulation and control strategy protection method - Google Patents
PID fan regulation and control strategy protection method Download PDFInfo
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- CN106681458A CN106681458A CN201611219238.9A CN201611219238A CN106681458A CN 106681458 A CN106681458 A CN 106681458A CN 201611219238 A CN201611219238 A CN 201611219238A CN 106681458 A CN106681458 A CN 106681458A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/20—Cooling means
- G06F1/206—Cooling means comprising thermal management
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
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- Cooling Or The Like Of Electrical Apparatus (AREA)
- Control Of Temperature (AREA)
Abstract
The invention discloses a PID fan regulation and control strategy protection method and belongs to the technical field of server cooling. The method includes the steps that a CPU temperature protection point is set, logic statements are added in a PID regulation and control strategy, when the CPU temperature is lower than the temperature protection point, the PID regulation and control strategy outputs a fan PWM value according to a normal PID calculation method, when the CPU temperature is higher than the temperature protection point, the PID regulation and control strategy adds a constant value into the PWM value and then outputs the PWM value to a fan, and the rotation speed of the fan is regulated and controlled so as to avoid the excessively high temperature of a CPU. According to the PID fan regulation and control strategy protection method, the PWM value of the fan is regulated and controlled according to the actual situation, the heat dissipating capability is improved, the excessively high temperature of the CPU is avoided, the power consumption and noise of a system are reduced, and the method has very good application value.
Description
Technical field
The present invention relates to server radiating technical field, specifically provides a kind of PID fan regulation and controllings strategy guard method.
Background technology
Computer has the advantages of information memory capacity is big, and user acquisition information is convenient and swift, is widely applied.With
The progress and expanding economy of society, performance requirement more and more higher of the user to computer.Server and traditional calculating
Machine is compared, and with more preferable autgmentability, ease for use and ease of manageability, is favored by many large enterprises.With entering for technology
Step and raising of the market to server performance demand, the CPU power consumption specification of server is gradually lifted, and the CPU that how to dissipate in time is produced
Raw heat and reduce the power consumption and noise of system fan and become the emphasis of server design concern.The radiating specification of CPU is
It is linear, be not a fixed numerical value, in order to prevent CPU excess temperatures or fan from overrunning, need constantly to adjust rotation speed of the fan with
Adapt to the radiating requirements of CPU.Traditional staircase method needs server internal components and parts to have larger range of temperature just can enter
The regulation and control of row rotation speed of the fan, therefore there is excessive heat dissipation problem when server workload is relatively low.Traditional staircase method is compared,
PID regulation and control method can effectively reduce rotation speed of the fan and system noise, and avoid the fan in server running from shaking
Swing.At present PID regulation and control method has become the mainstream scheme of server design.
PID fan regulation and controllings are based on below equation：
Continuous adjustment tri- parameters of P, I, D, and in record system pressure process cpu temperature and rotation speed of the fan change it is bent
Line, it is possible to obtain suitable for the best parameter group of system.Wherein, what proportional P can affect that rotation speed of the fan varies with temperature is fast
Slowly, when P values increase, rotation speed of the fan increasing degree when CPU exceedes set point temperatures becomes big, and cpu temperature can be made to reduce rapidly.
But in general, P values are too high can cause system fan to be shaken, and in order to accelerate stablizing for system, P values can not be excessive.For employing
For the server of high power consumption CPU, suddenly in the case of pressurization, cpu temperature is quickly raised system, it is contemplated that fan response time
And relative speed variation, the lifting of heat-sinking capability relatively lags behind in the lifting of temperature, and the risk of CPU excess temperatures easily occurs, and easily causes
The damage of CPU, affects the normal work of server.
The content of the invention
The technical assignment of the present invention is for above-mentioned problem, there is provided a kind of to regulate and control fan according to practical situation
PWM value, improves heat-sinking capability, so as to avoid CPU excess temperatures, and can reduce the power consumption of system and the PID fan regulation and controlling strategies of noise
Guard method.
For achieving the above object, the invention provides following technical scheme：
A kind of PID fan regulation and controllings strategy guard method, arranges cpu temperature protection point, and in PID regulating strategies logic is increased
Sentence, when cpu temperature is less than temperature protection point, PID regulating strategies export fan PWM value according to normal PID computational methods, when
When cpu temperature exceedes temperature protection point, PID regulating strategies increase PWM value one and quantitatively export again to fan, regulate and control fan
Rotating speed, realization avoids CPU excess temperatures.
The PWM is the abbreviation of Pulse Width Modulation.
The guard method increases logical statement in PID regulating strategies, by the logical statement of increase when cpu temperature is close to
During temperature protection point, fan PWM value can increase moment, increase the rotating speed of fan, improve heat-sinking capability, it is to avoid cpu temperature is too high,
Ensure the normal work of server.
Preferably, the cpu temperature protection point of the setting is two-stage, one-level temperature protection point arrange parameter is P1, is protected
Shield point temperature is Tjmax-P1, and corresponding PWM increments are Q1, and two grades of temperature protection point arrange parameters are P2, and protection point temperature is
Tjmax-P2, corresponding PWM increments are Q2, P1>P2, Q1<Q2.
The Tjmax is the highest cpu temperature for allowing.
P1>P2, is to make two grades of temperature protection point temperature be higher than one-level temperature protection point temperature.
Q1<Q2, if cpu temperature is less than two grades of temperature protection point temperature, will deduct Q1, equivalent to PWM to PWM variable quantities
Increase Q1；If cpu temperature is higher than two grades of temperature protection point temperature, Q2 will be deducted to PWM variable quantities, equivalent to PWM Q2 will be increased,
Cpu temperature is triggered to higher temperature protection point, plays more preferable protective effect.
Preferably, the guard method is concretely comprised the following steps：
S1：Definition system initial p WM value；
S2：Define initial temperature deviation Le；
S3：Definition ratio is to COEFFICIENT Kp；
S4：Defining integration item system Ki；
S5：Define differential term COEFFICIENT Kd；
S6：Define time in counting period dt；
S7：Design temperature control parameter Tcontrol, cpu temperature is controlled at (Tjmax-Tcontrol)；
S8：One-level temperature protection point arrange parameter is P1, and protection point temperature is Tjmax-P1, and two grades of temperature protection points are arranged
Parameter is P2, and protection point temperature is Tjmax-P2, P1>P2；
S9：The corresponding PWM increments of one-level temperature protection point are Q1, and the corresponding PWM increments of two grades of temperature protection points are Q2, Q1
<Q2；
S10：Cpu temperature surplus TDTS is read, according to temperature margin TDTS and temperature control parameter Tcontrol, according to
PID regulating strategies calculate required PWM variable quantities.
Preferably, in step S10, judging cpu temperature, cpu temperature is less than one-level temperature protection point temperature
During Tjmax-P1, PWM variable quantities are constant, PWM value normal regulating, otherwise increase by one quantitatively to PWM value.
Preferably, when cpu temperature is higher than one-level temperature protection point temperature Tjmax-P1, judging again, work as cpu temperature
During less than two grades of temperature protection point temperature Tjmax-P2, Q1 is increased to PWM value, when cpu temperature is higher than two grades of temperature protection point temperature
During degree Tjmax-P2, Q2 is increased to PWM value, and to Le again assignment, be circulated calculating.
Compared with prior art, PID fan regulation and controlling strategy guard methods of the invention have beneficial effect following prominent：
(1) PID fan regulation and controllings strategy of the present invention guard method protects point by arranging cpu temperature, and adjusts in PID
Increase logical statement in control strategy, when the close temperature protection point of cpu temperature, fan PWM value can increase moment, improve fan
Rotating speed, so as to improve the heat-sinking capability of server, it is to avoid the phenomenon of excess temperature occurs in CPU；
(2) the cpu temperature protection point is two-stage, and one-level temperature protection point arrange parameter is P1, and protection point temperature is
Tjmax-P1, the corresponding PWM increments of one-level temperature protection point are Q1, and two grades of temperature protection point arrange parameters are P2, and protection point is warm
Spend for Tjmax-P2, the corresponding PWM increments of two grades of temperature protection points are Q2, P1>P2, Q1<Q2, makes two grades of temperature protection point temperature
Higher than one-level temperature protection point temperature, cpu temperature is triggered to higher temperature protection point, plays more preferable protective effect, and energy
The power consumption and noise of system are enough reduced, is easily used, it is easy to promote, improve practicality.
Description of the drawings
Fig. 1 is the flow chart of PID fan regulation and controllings strategy guard method of the present invention.
Specific embodiment
Below in conjunction with drawings and Examples, the PID fan regulation and controlling strategies guard method to the present invention is made further in detail
Explanation.
Embodiment 1
The PID fan regulation and controlling strategy guard methods of the present invention, arrange cpu temperature protection point, increase in PID regulating strategies
Logical statement, when cpu temperature is less than temperature protection point, PID regulating strategies export fan PWM according to normal PID computational methods
Value, when cpu temperature exceedes temperature protection point, PID regulating strategies increase PWM value one and quantitatively export again to fan, regulation and control
The rotating speed of fan, realization avoids CPU excess temperatures.
Embodiment 2
On the basis of embodiment 1, the cpu temperature protection point of setting is two-stage, and one-level temperature protection point arrange parameter is
P1, protection point temperature is Tjmax-P1, and corresponding PWM increments are Q1, and two grades of temperature protection point arrange parameters are P2, and protection point is warm
Spend for Tjmax-P2, corresponding PWM increments are Q2, P1>P2, Q1<Q2.
P1>P2, makes two grades of temperature protection point temperature be higher than one-level temperature protection point temperature.
Q1<Q2, if cpu temperature is less than two grades of temperature protection point temperature, will deduct Q1, equivalent to PWM to PWM variable quantities
Increase Q1；If cpu temperature is higher than two grades of temperature protection point temperature, Q2 will be deducted to PWM variable quantities, equivalent to PWM Q2 will be increased,
Cpu temperature is triggered to higher temperature protection point, plays more preferable protective effect.
Embodiment 3
As shown in figure 1, the PID fan regulation and controlling strategy guard methods of the present invention are concretely comprised the following steps：
S1：Definition system initial p WM value.
S2：Define initial temperature deviation Le.
S3：Definition ratio is to COEFFICIENT Kp。
S4：Defining integration item system Ki。
S5：Define differential term COEFFICIENT Kd。
S6：Define time in counting period dt.
S7：Design temperature control parameter Tcontrol, cpu temperature is controlled at (Tjmax-Tcontrol).
S8：One-level temperature protection point arrange parameter is P1, and protection point temperature is Tjmax-P1, and two grades of temperature protection points are arranged
Parameter is P2, and protection point temperature is Tjmax-P2, P1>P2.
S9：The corresponding PWM increments of one-level temperature protection point are Q1, and the corresponding PWM increments of two grades of temperature protection points are Q2, Q1
<Q2。
S10：Cpu temperature surplus TDTS is read, according to temperature margin TDTS and temperature control parameter Tcontrol, according to
PID regulating strategies calculate required PWM variable quantities.Cpu temperature is judged, cpu temperature is less than one-level temperature protection point temperature
During degree Tjmax-P1, PWM variable quantities are constant, PWM value normal regulating.Cpu temperature is higher than one-level temperature protection point temperature Tjmax-
When P1 is less than two grades of temperature protection point temperature Tjmax-P2, Q1 is increased to PWM value, i.e., Q1 is deducted to PWM variable quantities.Cpu temperature
During higher than two grades of temperature protection point temperature Tjmax-P2, Q2 is increased to PWM value, i.e., deduct Q2 to PWM variable quantities, and to Le again
Assignment, is circulated again calculating, it is to avoid CPU is in over-temperature condition, it is ensured that the normal work of server.
Embodiment described above, the simply present invention more preferably specific embodiment, those skilled in the art is at this
The usual variations and alternatives carried out in the range of inventive technique scheme all should be comprising within the scope of the present invention.
Claims (5)
1. a kind of PID fan regulation and controllings strategy guard method, it is characterised in that：Cpu temperature protection point is set, in PID regulating strategies
Middle increase logical statement, when cpu temperature is less than temperature protection point, PID regulating strategies export wind according to normal PID computational methods
Fan PWM value, when cpu temperature exceedes temperature protection point, PID regulating strategies increase by one and quantitatively export again to fan to PWM value,
The rotating speed of regulation and control fan, realization avoids CPU excess temperatures.
2. PID fan regulation and controllings strategy guard method according to claim 1, it is characterised in that：The cpu temperature of the setting
Protection point is two-stage, and one-level temperature protection point arrange parameter is P1, and protection point temperature is Tjmax-P1, and corresponding PWM increments are
Q1, two grades of temperature protection point arrange parameters are P2, and protection point temperature is Tjmax-P2, and corresponding PWM increments are Q2, P1>P2, Q1
<Q2。
3. PID fan regulation and controllings strategy guard method according to claim 1 and 2, it is characterised in that：The guard method
Concretely comprise the following steps：
S1：Definition system initial p WM value；
S2：Define initial temperature deviation Le；
S3：Definition ratio is to COEFFICIENT Kp；
S4：Defining integration item system Ki；
S5：Define differential term COEFFICIENT Kd；
S6：Define time in counting period dt；
S7：Design temperature control parameter Tcontrol, cpu temperature control is existed（Tjmax-Tcontrol）；
S8：One-level temperature protection point arrange parameter is P1, protects point temperature for Tjmax-P1, two grades of temperature protection point arrange parameters
For P2, protection point temperature is Tjmax-P2, P1>P2；
S9：The corresponding PWM increments of one-level temperature protection point are Q1, and the corresponding PWM increments of two grades of temperature protection points are Q2, Q1<Q2；
S10：Cpu temperature surplus TDTS is read, according to temperature margin TDTS and temperature control parameter Tcontrol, is adjusted according to PID
PWM variable quantities needed for control policy calculation.
4. PID fan regulation and controllings strategy guard method according to claim 3, it is characterised in that：In step S10, to CPU temperature
Degree is judged that when cpu temperature is less than one-level temperature protection point temperature Tjmax-P1, PWM variable quantities are constant, and PWM value is normally adjusted
Section, otherwise increases by one quantitatively to PWM value.
5. PID fan regulation and controllings strategy guard method according to claim 4, it is characterised in that：When cpu temperature is higher than one-level
During temperature protection point temperature Tjmax-P1, judge again, when cpu temperature is less than two grades of temperature protection point temperature Tjmax-P2,
Q1 is increased to PWM value, when cpu temperature is higher than two grades of temperature protection point temperature Tjmax-P2, Q2 is increased to PWM value, and to Le
Again assignment, is circulated calculating.
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| CN201611219238.9A CN106681458A (en) | 2016-12-26 | 2016-12-26 | PID fan regulation and control strategy protection method |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107165849A (en) * | 2017-06-24 | 2017-09-15 | 山东超越数控电子有限公司 | A kind of machine box for server control method for fan based on Redundant Control strategy |
| CN107269567A (en) * | 2017-08-18 | 2017-10-20 | 郑州云海信息技术有限公司 | A kind of realization method and system of the PID fan regulation and controlling strategies based on environment temperature |
| CN107643811A (en) * | 2017-09-26 | 2018-01-30 | 郑州云海信息技术有限公司 | A kind of fan regulation and controlling optimization method based on PID control principle |
| CN107762936A (en) * | 2017-11-17 | 2018-03-06 | 英业达科技有限公司 | Temperature control equipment and its method |
| CN107893773A (en) * | 2017-10-31 | 2018-04-10 | 郑州云海信息技术有限公司 | A kind of fan regulation and controlling method based on Overall Power Consumption |
| CN108597559A (en) * | 2017-12-29 | 2018-09-28 | 青岛海信医疗设备股份有限公司 | Heat dissipating method and device for Medical Devices |
| CN109407793A (en) * | 2018-09-12 | 2019-03-01 | 西安易朴通讯技术有限公司 | A kind of temprature control method, relevant apparatus and readable storage medium storing program for executing |
| CN109656777A (en) * | 2018-11-20 | 2019-04-19 | 山东超越数控电子股份有限公司 | A kind of reducing fan noise regulation method, apparatus, terminal and storage medium |
| CN112068691A (en) * | 2020-08-21 | 2020-12-11 | 苏州浪潮智能科技有限公司 | Fan rotating speed regulation and control method and system introducing power algorithm |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107165849A (en) * | 2017-06-24 | 2017-09-15 | 山东超越数控电子有限公司 | A kind of machine box for server control method for fan based on Redundant Control strategy |
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| CN109656777A (en) * | 2018-11-20 | 2019-04-19 | 山东超越数控电子股份有限公司 | A kind of reducing fan noise regulation method, apparatus, terminal and storage medium |
| CN112068691A (en) * | 2020-08-21 | 2020-12-11 | 苏州浪潮智能科技有限公司 | Fan rotating speed regulation and control method and system introducing power algorithm |
| CN112068691B (en) * | 2020-08-21 | 2022-07-08 | 苏州浪潮智能科技有限公司 | Fan rotating speed regulation and control method and system introducing power algorithm |
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Application publication date: 20170517 |