CN106288197B - A kind of air conditioning control method and its system based on pid algorithm - Google Patents
A kind of air conditioning control method and its system based on pid algorithm Download PDFInfo
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- CN106288197B CN106288197B CN201610683415.2A CN201610683415A CN106288197B CN 106288197 B CN106288197 B CN 106288197B CN 201610683415 A CN201610683415 A CN 201610683415A CN 106288197 B CN106288197 B CN 106288197B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/0001—Control or safety arrangements for ventilation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/0001—Control or safety arrangements for ventilation
- F24F2011/0002—Control or safety arrangements for ventilation for admittance of outside air
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The present invention provides a kind of air conditioning control method and its system based on pid algorithm passes through supply air temperature, return air temperature and the humidity of air-conditioning in acquisition computer room；According to the supply air temperature, return air temperature and default computer room temperature, number and the starting time of the starting of air-conditioning inner compressor are controlled；Using increment type PID algorithm, according between the supply air temperature and return air temperature temperature difference and default computer room temperature, calculate the optimal output frequency of compressor；The optimized rotating speed of blower is adjusted according to the optimal output frequency of compressor simultaneously；Control compressor carries out cooling capacity output with the optimal output frequency and controls blower with the rotational speed after adjusting.The method of the invention and its system are adjusted compressor rotary speed by frequency converter, and air-conditioning exports smaller cooling capacity, to reach the balance of cooling capacity and heat in computer room, the start-stop time for reducing compressor, reduces the operation energy consumption of compressor, to keep the operation of air-conditioning more energy efficient.
Description
Technical field
The present invention relates to air conditioner controlling technology field more particularly to a kind of air conditioning control methods based on pid algorithm
And its system.
Background technique
Currently, the user using tradition IDC data center is essentially telecom operators, data center services quotient, bank, doctor
The big computer room of institute, government organs, such computer room uses direct-expansion type precision air conditioner in high-volume, by starting and stopping compressor
Mode, adjusts the output cooling capacity of air-conditioning, and general partially that there are air-conditioner efficiencies is low, energy consumption is high, high frequent start and stop cause service life
Phenomena such as shortening.
For many years, as the huge phenomenon of the power consumption of data center increasingly highlights, operation cost pressure increases, in industry
Also it is invented in continuous study of various energy conservation, main direction of studying is to improve computer room air current composition, promotes the heat exchange effect of air-conditioning indirectly
Rate has to realize the reduction energy consumption on certain procedures, but the energy consumption of air-conditioning is still very high there are also further energy-saving type air conditioner
It is to be excavated.
But in house and the refrigerating field of general commercial building, there is the invention that energy saving optimizing is done to compressor, but
Because of the difference of application, in the case where air-conditioning is the operating condition of double-compressor, control method is that a frequency converter controls two simultaneously
Compressor and indoor fan, and make two compressors while starting or stoping, and the revolving speed rate of descent of indoor fan and compression
Machine revolving speed rate of descent is consistent.The invention is applied on air conditioner in machine room, there are the shortcomings that have: the control range of its cooling capacity is narrow
(about 70%~100%), in the case where computer room low-load, hence it is evident that increase computer room temperature fluctuating change, can easily surpass very much
The variation that computer room allows out is fluctuated, and is unable to satisfy computer room Wind Volume, small break difference and temperature change and is fluctuated small etc. require.This kind of interior
The regulative mode of rotation speed of fan, supply air temperature is too low in Yi Yinqi computer room, and causes the inlet air temperature of information technoloy equipment in computer room too low；
Haves the defects that humid control low precision in computer room.
Therefore, the existing technology needs further improvement.
Summary of the invention
In view of the above shortcomings in the prior art, a kind of based on PID calculation it is an object of the invention to be provided for user
The air conditioning control method and its system of method, overcome the inlet air temperature of information technoloy equipment in computer room in the prior art too low, there are in computer room
The defect of humid control low precision.
The technical proposal for solving the technical problem of the invention is as follows:
A kind of air conditioning control method based on pid algorithm, wherein the following steps are included:
Step A, supply air temperature, return air temperature and the humidity of air-conditioning in computer room are acquired；
Step B, according to the supply air temperature, return air temperature and default computer room temperature, the starting of air-conditioning inner compressor is controlled
Number and starting time；
Step C, it using increment type PID algorithm, according to the temperature difference between the supply air temperature and return air temperature and presets
Computer room temperature calculates the optimal output frequency of compressor；Turning for blower is adjusted according to the optimal output frequency of compressor simultaneously
Speed；
Step D, control compressor carries out cooling capacity output with the optimal output frequency and controls blower to turn after adjusting
Speed rotation.
The air conditioning control method based on pid algorithm, wherein the step B includes:
Step B1, when meeting condition T2 > T+k1, and when compressor-free operation, then start the first compressor；
Step B2, when meeting condition T2 > T+k2, and the revolving speed of the first compressor is maximum value, and keeps first to preset
After time TIME1, then start the second compressor；
Step B3, when meeting condition T2 < T-k3, and the revolving speed of a first compressor and a second compressor is minimum value, then
After keeping the second preset time T IME2, then stop the operation of the second compressor or the first compressor；
Step B4, when meeting condition T2 < T-k4, and the revolving speed for the first compressor or the second compressor being currently running
For minimum value, and after keeping third preset time T IME3, then stop all compressors operations；
Wherein, the T2 is return air temperature, and T is default computer room temperature, k2 > k1, k4 > k3, and the value of k1, k2, k3 and k4
For the constant no more than 2；The value of described TIME1, TIME2 and TIME3 are constant.
The air conditioning control method based on pid algorithm, wherein increment type PID algorithm described in the step C passes through
Following formula one calculates:
△uk= uk-uk-1= Kp×△ek+ Ki×ek+ Kd×[△ek-△ek-1]；
ek=T-T2；△ek=ek-ek-1, △ ek-1=ek-1-ek-2；
Wherein, T is default computer room temperature, and T2 is return air temperature；Described Kp, Ki and Kd are constant.
The air conditioning control method based on pid algorithm, wherein in the step C further include:
Step C1, increment type PID algorithm and adaptive algorithm are combined, compressor is calculated most by following formula two
Excellent output frequency:
△uk =△uk(1+ Kx)；
Wherein: Kx=| preset value-value of feedback |/preset value × 100%；As Kx < 10%, △ uk =△uk；Work as Kx >=
When 10%, △ uk =△uk(1+ Kx)；The value of feedback is the return air temperature of air-conditioning, and the preset value is default return air temperature.
The air conditioning control method based on pid algorithm, wherein the step C further include:
Step C2, by after the setting synchronous with the revolving speed of compressor of the revolving speed of blower, according to supply air temperature, return air humidity, pre-
If the revolving speed of blower is adjusted in the first protection value, default second protection value, default third protection value and the 4th protection value；
If supply air temperature is less than default first protection value, the revolving speed for controlling blower cannot be less than default second protection value；
If return air humidity is greater than third protection value, controls rotation speed of fan and be not greater than the 4th protection value.
A kind of air-conditioner control system based on pid algorithm, wherein include: that multiple compressors and each compressor establish one
One be correspondingly connected with multiple frequency converters, blower, the shared governor for establishing with whole blowers connection, wind pushing temperature sensor,
Return air temperature sensor, return air humidity sensor and controller；
The air-supply of air-conditioning in the wind pushing temperature sensor, return air temperature sensor and return air humidity sensor acquisition computer room
Temperature, return air temperature and humidity, are transmitted to controller；
The controller includes: starting number and time control module, optimal data computing module and control operation module；
The starting number and time control module, for according to the supply air temperature, return air temperature and default computer room temperature
Degree, the number of control air-conditioning inner compressor starting and starting time；
The optimal data computing module, for utilizing increment type PID algorithm, according to the supply air temperature and return air temperature
Between temperature difference and default computer room temperature, calculate the optimal output frequency of compressor, while according to the optimal defeated of compressor
Frequency adjusts the revolving speed of blower out；
Control operation module, for control compressor with the optimal output frequency carry out cooling capacity output and control blower with
Rotational speed after adjusting.
The air-conditioner control system based on pid algorithm, wherein the starting number and time control module include:
First condition judging unit then starts first for when meeting condition T2 > T+k1, and when compressor-free is run
Compressor；
Second condition judging unit, for when meeting condition T2 > T+k2, and the revolving speed of the first compressor is maximum value,
And after keeping the first preset time T IME1, start the second compressor；
Third condition judging unit, for when meeting condition T2 < T-k3, and a first compressor and a second compressor turns
Speed is that minimum value then stops the operation of the second compressor or the first compressor after then keeping the second preset time T IME2；
Fourth condition judging unit, for when meeting condition T2 < T-k4, and the first compressor being currently running or
The revolving speed of two compressors is minimum value, and after keeping third preset time T IME3, then stops all compressors operations；
Wherein, the T2 is return air temperature, and T is default computer room temperature, k2 > k1, k4 > k3, and the value of k1, k2, k3 and k4
For the constant no more than 2；The value of described TIME1, TIME2 and TIME3 are constant.
The air-conditioner control system based on pid algorithm, wherein the increment type PID algorithm passes through following formula
One is calculated:
△uk= uk-uk-1= Kp×△ek+ Ki×ek+ Kd×[△ek-△ek-1]；
ek=T-T2；△ek=ek-ek-1, △ ek-1=ek-1-ek-2；
Wherein, T is default computer room temperature, and T2 is return air temperature, and the Kp is proportionality coefficient；Ki: integral coefficient；Kd: micro-
Divide coefficient.
The air-conditioner control system based on pid algorithm, wherein the optimal data computing module is also used to increase
Amount formula pid algorithm and adaptive algorithm combine, and the optimal output frequency of compressor is calculated by following formula two:
△uk =△uk(1+Kx)；
Kx=(preset value-value of feedback)/preset value × 100%；As Kx < 10%, △ uk =△uk；
When Kx >=10% when, △ uk =△uk(1+ Kx)；
Wherein, the value of feedback is the return air temperature of air-conditioning, and the preset value is default return air temperature.
The air-conditioner control system based on pid algorithm, wherein the optimal data computing module is also used to wind
After the revolving speed of machine and the synchronous setting of the revolving speed of compressor, according to supply air temperature, return air humidity, default first protection value, default the
The revolving speed of blower is adjusted in two protection values, default third protection value and the 4th protection value；
If supply air temperature is less than default first protection value, the revolving speed for controlling blower cannot be less than default second protection value；
If return air humidity is greater than third protection value, controls rotation speed of fan and be not greater than the 4th protection value.
Beneficial effect, the present invention provides a kind of air conditioning control method and its system based on pid algorithm pass through harvester
The supply air temperature of air-conditioning, return air temperature and humidity in room；According to the supply air temperature, return air temperature and default computer room temperature, control
The number of air-conditioning inner compressor starting processed and starting time；Using increment type PID algorithm, according to the supply air temperature and return air temperature
Temperature difference and default computer room temperature between degree, calculate the optimal output frequency of compressor；Simultaneously according to the optimal of compressor
The optimized rotating speed of output frequency adjusting blower；It controls compressor and cooling capacity output and control blower is carried out with the optimal output frequency
With the rotational speed after adjusting.The optimal control for realizing air conditioner in machine room makes up control of the prior art in computer room low-load and lacks
It falls into, when computer room load is relatively low, runs compression and adjusted, compressor rotary speed is adjusted by frequency converter, it is empty
It adjusts the smaller cooling capacity of output to reduce the start-stop time of compressor to reach the balance of cooling capacity and heat in computer room, reduces compression
The operation energy consumption of machine, to keep the operation of air-conditioning more energy efficient.Cold regulation range using air-conditioning after this technology is wider, effectively solves
Computer room temperature of having determined fluctuates excessive problem, reduces the start-stop time of compressor, while energy-saving effect is more excellent.
Detailed description of the invention
Fig. 1 is the step flow chart of the air conditioning control method of the present invention based on pid algorithm.
Fig. 2 is the theory structure schematic diagram of system of the present invention.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer and more explicit, right as follows in conjunction with drawings and embodiments
The present invention is further described.It should be appreciated that specific embodiment described herein is used only for explaining the present invention, and do not have to
It is of the invention in limiting.
For air conditioner in machine room energy consumption height and above-mentioned defect existing in the prior art, the present invention proposes a kind of novel
Control method and control system.The method and system provided by the invention are suitable for transformation and the new room of old air conditioner in machine room
The control system of air-conditioning configures a governor to indoor fan, by adopting by the way that frequency converter is separately configured to every compressor
Supply air temperature, return air temperature and the humidity for collecting air-conditioning in computer room calculate optimal output frequency as the controller built in control equipment
Rate controls the revolving speed of compressor and indoor fan, to realize the adjusting of air-conditioning cold flow.
The present invention provides a kind of air conditioning control method based on pid algorithm, such as Fig. 1, comprising the following steps:
Supply air temperature, return air temperature and the humidity of air-conditioning in S1, acquisition computer room.
Use the wind pushing temperature sensor, return air temperature sensor and return air humidity sensor being mounted in Air Conditioning Facilities
Supply air temperature, return air temperature and the humidity in Air Conditioning Facilities are acquired respectively, and send control for collected data
Device.
S2, the number started according to the supply air temperature, return air temperature and default computer room temperature, control air-conditioning inner compressor
With the starting time.
In order to preferably control air-conditioning system, controller carries out compressor according to the data received in this step
The number and the calculating of starting time of starting, specifically, the step of data are calculated based on the received includes:
S21, when meeting condition T2 > T+k1, and compressor-free run when, then start the first compressor；
S22, when meeting condition T2 > T+k2, and the revolving speed of the first compressor be maximum value, and keep the first preset time
After TIME1, then start the second compressor；
S23, when meeting condition T2 < T-k3, and the revolving speed of a first compressor and a second compressor be minimum value, then keep
After second preset time T IME2, then stop the operation of the second compressor or the first compressor；
S24, when meeting condition T2 < T-k4, and the revolving speed for the first compressor or the second compressor being currently running is
Minimum value, and after keeping third preset time T IME3, then stop all compressors operations；
Wherein, the T2 is return air temperature, and T is default computer room temperature, k2 > k1, k4 > k3, and the value of k1, k2, k3 and k4
For the constant no more than 2；The value of described TIME1, TIME2 and TIME3 are constant.
S3, using increment type PID algorithm, according between the supply air temperature and return air temperature temperature difference and default computer room
Temperature calculates the optimal output frequency of compressor；Optimal turn of blower is adjusted according to the optimal output frequency of compressor simultaneously
Speed.
The increment type PID algorithm is calculated by following formula one:
△uk= uk-uk-1= Kp×△ek+ Ki×ek+ Kd×[△ek-△ek-1]；
ek=T-T2；△ek=ek-ek-1, △ ek-1=ek-1-ek-2；
Wherein, T is default computer room temperature, and T2 is return air temperature, and described Kp, Ki and Kd are constant.
The step S3 further include:
S34, the revolving speed that compressor is adjusted according to the difference of return air temperature T2 and default computer room temperature T increase as T2 > T
Frequency, it is on the contrary then reduce frequency.
In the step S1 further include:
Step S311, increment type PID algorithm and adaptive algorithm are combined, compressor is calculated by following formula two
Optimal output frequency:
△uk =△uk(1+ Kx)；
Kx=(preset value-value of feedback)/preset value × 100%；As Kx < 10%, △ uk =△uk；When Kx >=10% when,
△uk =△uk(1+ Kx)；
Wherein, the value of feedback is the return air temperature of air-conditioning, and the preset value is default return air temperature.
It further include the content controlled the revolving speed of blower in this step, specific as follows:
Firstly, by the setting synchronous with the revolving speed of compressor of the revolving speed of blower, then according to supply air temperature, return air humidity, pre-
If the revolving speed of blower is adjusted in the first protection value, default second protection value, default third protection value and the 4th protection value；If
Supply air temperature is less than default first protection value, then the revolving speed for controlling blower cannot be less than default second protection value；If return air humidity
Greater than third protection value, then controls rotation speed of fan and be not greater than the 4th protection value, it is excessive so as to avoid the wind speed of blower, cause
Damage to blower, while also avoiding since the wind speed of blower is too small, caused its can not achieve its dehumidification function.
S4, control compressor carry out cooling capacity output with the optimal output frequency and control blower is turned with the optimized rotating speed
It is dynamic.
In above-mentioned steps after the optimal output frequency of calculated compressor and the revolving speed of blower, according to calculated number
It is controlled according to compressor and blower.
Method when below with method provided by the present invention specific implementation is described further the above method.
In the specific implementation, the return air temperature of Air Conditioning Facilities, supply air temperature and humidity are acquired first, and to Air Conditioning Facilities
Temperature is preset, by real-time collected supply air temperature and return air temperature and default computer room temperature to compressor
Optimal output frequency is calculated.
Specifically, first being opened the starting number and compressor of compressor before the optimal output frequency for calculating compressor
The dynamic time is calculated, and its step are as follows:
When meeting condition T2 > T+k1, and when compressor-free operation, start the first compressor, air-conditioning is separate unit pressure at this time
Contracting mechanism cold；Since computer room load at this time is relatively low, meet needs as long as then starting a compressor and carrying out refrigeration.
When meeting condition T2 > T+k2, and the revolving speed of the first compressor is maximum value, and after retention time TIME1, starting
Second compressor freezes at this time in Air Conditioning Facilities for two compressors；
When meeting condition T2 < T-k3, and the revolving speed of two compressors is minimum value, and after retention time TIME2, is stopped
One compressor, air-conditioning is single compressor refrigeration at this time；
When meeting condition T2 < T-k4, and the revolving speed of compressor is minimum value, and after retention time TIME3, all compressions
Machine is out of service, and air-conditioning does not freeze at this time.
More than, k2 > k1, k4 > k3, and the value of k1, k2, k3 and k4 are constant, and are not more than 2.TIME1,TIME2,TIME3
Value be constant, general value 5 minutes.
Next the revolving speed of compressor when being currently running is calculated, according to return air temperature T2 and default computer room temperature
The difference of T adjusts the revolving speed of compressor, as T2 > T, increases frequency, on the contrary then reduce frequency.According to default computer room temperature T with
The difference of return air temperature T2 calculates the optimal output frequency of compressor using increment type PID algorithm and adaptive algorithm,
Its algorithm is as follows
△ uk=uk-uk-1=Kp × △ ek+Ki × ek+ Kd × [△ ek- △ ek-1] formula (1)
Wherein: ek=T-T2；△ ek=ek-ek-1, △ ek-1=ek-1-ek-2；
Kp: proportionality coefficient；Ki: integral coefficient；Kd: differential coefficient；Described Kp, Ki and Kd are constant, are surveyed by laboratory
Examination, value is Kp=120, and when Ki=40, Kd=30, this control method is more excellent to the regulating effect of temperature, can also be according to practical feelings
Condition does small amendment, to be optimal control effect.
In order to make pid algorithm adjust more quick response, meets system requirements, substantially increase in the adjusting of original pid algorithm
Add parameter adaptive COEFFICIENT K x, algorithm is as follows:
△ uk=△ uk (1+ Kx) formula (2)
Wherein: Kx=(setting value-value of feedback)/setting value × 100%；As Kx < 10%, △ uk=△ uk；Work as Kx >=
When 10%, △ uk=△ uk (1+ Kx)；
The technology can quickly adjust the cooling capacity output of air-conditioning, be allowed to be rapidly achieved with the heat load of computer room information technoloy equipment flat
Weighing apparatus, fast response time.Simultaneously as the adjusting of single compressor and the adjusting of two compressors, the cooling capacity of air-conditioning may be implemented
Output area is bigger (30%~100%), can satisfy the practical application of heavy load computer room and small load computer room.
The method of the invention realizes air-conditioning under each load, realizes air-conditioning cold flow output by start/stop of compressor mode
It adjusts, cooperates the rotational speed regulation technology of Compressors and Fans, it can be achieved that 30%~100% exports the step-less adjustment function of cooling capacity.
Next, independent governor is arranged for blower in the present invention, and individually the maximum speed of setting blower with it is minimum
Revolving speed, the actual running speed N of blower and the revolving speed of compressor are adjusted in synchronism, while inserting the relay protective scheme of computer room operating condition,
To guarantee that air conditioner in machine room is safer and energy-saving run, control method are as follows:
If the supply air temperature of air-conditioning is less than the first protection value k1, i.e. T1 < k1, the revolving speed of blower cannot be less than the second protection
Value k2；
If calculating revolving speed N less than the second protection value k2, output revolving speed N=k2 of blower is controlled,
If calculate revolving speed N more than or equal to the second protection value k2, output revolving speed N=k2 of blower.
If the return air humidity of air-conditioning is greater than third protection value k3, rotation speed of fan is not greater than the 4th protection value value k4；
If calculating revolving speed N is less than protection value k4, output revolving speed N=N of blower,
If calculate revolving speed N more than or equal to protection value k4, output revolving speed N=k4 of blower；Preferably, the k4 is
Dehumidify air speed value.
The technology realizes the independent control of rotation speed of fan, makes air-conditioning in normal process of refrigerastion, can be computer room IT
Equipment provides suitable inlet air temperature and humidity, reduces information technoloy equipment failure because of caused by external environment, ensures its safe operation.
Based on the above method, the present invention also provides a kind of air-conditioner control system based on pid algorithm, such as Fig. 2
It is shown, established the system comprises: multiple compressors, with each compressor the multiple frequency converters to connect one to one, blower, with
Whole blowers establish the shared governor of connection, wind pushing temperature sensor, return air temperature sensor, return air humidity sensor and
Controller；
The air-supply of air-conditioning in the wind pushing temperature sensor, return air temperature sensor and return air humidity sensor acquisition computer room
Temperature, return air temperature and humidity, are transmitted to controller；
The controller includes: starting number and time control module, optimal data computing module and control operation module；
The starting number and time control module, for according to the supply air temperature, return air temperature and default computer room temperature
Degree, the number of control air-conditioning inner compressor starting and starting time；
The optimal data computing module, for utilizing increment type PID algorithm, according to the supply air temperature and return air temperature
Between temperature difference and default computer room temperature, calculate the optimal output frequency of compressor, while according to the optimal defeated of compressor
Frequency adjusts the optimized rotating speed of blower out；
Control operation module, for control compressor with the optimal output frequency carry out cooling capacity output and control blower with
The optimized rotating speed rotation.
The starting number and time control module include:
First condition judging unit then starts first for when meeting condition T2 > T+k1, and when compressor-free is run
Compressor；
Second condition judging unit, for when meeting condition T2 > T+k2, and the revolving speed of the first compressor is maximum value,
And after keeping the first preset time T IME1, start the second compressor；
Third condition judging unit, for when meeting condition T2 < T-k3, and a first compressor and a second compressor turns
Speed is that minimum value then stops the operation of the second compressor or the first compressor after then keeping the second preset time T IME2；
Fourth condition judging unit, for when meeting condition T2 < T-k4, and the first compressor being currently running or
The revolving speed of two compressors is minimum value, and after keeping third preset time T IME3, then stops all compressors operations；
Wherein, the T2 is return air temperature, and T is default computer room temperature, k2 > k1, k4 > k3, and the value of k1, k2, k3 and k4
For the constant no more than 2；The value of described TIME1, TIME2 and TIME3 are constant.
The increment type PID algorithm is calculated by following formula one:
△uk= uk-uk-1= Kp×△ek+ Ki×ek+ Kd×[△ek-△ek-1]；
ek=T-T2；△ek=ek-ek-1, △ ek-1=ek-1-ek-2；
Wherein, T is default computer room temperature, and T2 is return air temperature, and described Kp, Ki and Kd are constant.
The optimal data computing module is also used to be adjusted according to the difference of return air temperature T2 and default computer room temperature T and press
The revolving speed of contracting machine increases frequency as T2 > T, on the contrary then reduce frequency.
The optimal data computing module, is also used to combine increment type PID algorithm and adaptive algorithm, by as follows
The optimal output frequency of the calculating compressor of formula two:
△uk =△uk(1+ Kx)；
Kx=| preset value-value of feedback |/preset value × 100%；As Kx < 10%, △ uk =△uk；
When Kx >=10% when, △ uk =△uk(1+ Kx)；
Wherein, the value of feedback is the return air temperature of air-conditioning, and the preset value is default return air temperature.
Control equipment of the present invention, control object are air conditioner in machine room, and internal capital equipment includes frequency converter, speed regulation
Device, wind pushing temperature sensor, return air temperature sensor, return air humidity sensor and controller, according to the compressor of air conditioner in machine room
Quantity configures frequency converter with one-to-one principle, and indoor fan configures individual governor, and acquires the supply air temperature of computer room, returns
Air temperature and return air humidity calculate the temperature difference, are calculated by controller in conjunction with collected data and default computer room temperature value
Matched output frequency out controls the revolving speed of compressor and indoor fan, to complete the control exported to air-conditioning cold flow.
Beneficial effect, the present invention provides a kind of air conditioning control method and its system based on pid algorithm pass through harvester
The supply air temperature of air-conditioning, return air temperature and humidity in room；According to the supply air temperature, return air temperature and default computer room temperature, control
The number of air-conditioning inner compressor starting processed and starting time；Using increment type PID algorithm, according to the supply air temperature and return air temperature
Temperature difference and default computer room temperature between degree, calculate the optimal output frequency of compressor；Simultaneously according to the optimal of compressor
The optimized rotating speed of output frequency adjusting blower；It controls compressor and cooling capacity output and control blower is carried out with the optimal output frequency
With the rotational speed after adjusting.The cold regulation range of air-conditioning is wider in the method for the invention and system, efficiently solves machine
The excessive problem of room temperature fluctuation, reduces the start-stop time of compressor, and energy-saving effect is more excellent.
It, can according to the technique and scheme of the present invention and its hair it is understood that for those of ordinary skills
Bright design is subject to equivalent substitution or change, and all these changes or replacement all should belong to the guarantor of appended claims of the invention
Protect range.
Claims (6)
1. a kind of air conditioning control method based on pid algorithm, which comprises the following steps:
Step A, supply air temperature, return air temperature and the humidity of air-conditioning in computer room are acquired；
Step B, according to the return air temperature and default computer room temperature, when controlling the number and starting of air-conditioning inner compressor starting
Between；
Step C, the optimal of compressor is calculated according to the return air temperature and default computer room temperature using increment type PID algorithm
Output frequency；The revolving speed of blower is adjusted according to the optimal output frequency of compressor simultaneously；
Step D, control compressor is carried out cooling capacity output and is controlled blower to turn with the revolving speed after adjusting with the optimal output frequency
It is dynamic；
In the step C further include:
Step C1, increment type PID algorithm and adaptive algorithm are combined, the optimal defeated of compressor is calculated by following formula two
Frequency out:
△uk =△uk(1+ Kx)；
Wherein: Kx=| preset value-value of feedback |/preset value × 100%；As Kx < 10%, △ uk =△uk；Work as Kx >=10%
When, △ uk =△uk(1+ Kx)；The value of feedback is the return air temperature of air-conditioning, and the preset value is default return air temperature；
Step C2, by after the setting synchronous with the revolving speed of compressor of the revolving speed of blower, according to supply air temperature, return air humidity, default the
The revolving speed of blower is adjusted in one protection value, default second protection value, default third protection value and the 4th protection value；
If supply air temperature is less than default first protection value, the revolving speed for controlling blower cannot be less than default second protection value；If returning
Wind moisture is greater than third protection value, then controls rotation speed of fan and be not greater than the 4th protection value；
Independent governor is arranged in blower, and the individually maximum speed and minimum speed of setting blower.
2. the air conditioning control method according to claim 1 based on pid algorithm, which is characterized in that the step B includes:
Step B1, when meeting condition T2 > T+k1, and when compressor-free operation, then start the first compressor；
Step B2, when meeting condition T2 > T+k2, and the revolving speed of the first compressor is maximum value, and keeps the first preset time
After TIME1, then start the second compressor；
Step B3, when meeting condition T2 < T-k3, and the revolving speed of a first compressor and a second compressor is minimum value, then keeps
After second preset time T IME2, then stop the operation of the second compressor or the first compressor；
Step B4, when meeting condition T2 < T-k4, and the revolving speed for the first compressor or the second compressor being currently running is most
Small value, and after keeping third preset time T IME3, then stop all compressors operations；
Wherein, the T2 is return air temperature, and T is that default computer room temperature, k2 > k1, k4 > k3, and the value of k1, k2, k3 and k4 are not
Constant greater than 2；The value of described TIME1, TIME2 and TIME3 are constant.
3. the air conditioning control method according to claim 1 based on pid algorithm, which is characterized in that described in the step C
Increment type PID algorithm is calculated by following formula one:
△uk= uk-uk-1= Kp×△ek+ Ki×ek+ Kd×[△ek-△ek-1]；
ek=T-T2；△ek=ek-ek-1, △ ek-1=ek-1-ek-2；
Wherein, T is default computer room temperature, and T2 is return air temperature, and described Kp, Ki and Kd are constant.
4. a kind of air-conditioner control system based on pid algorithm characterized by comprising multiple compressors are built with each compressor
The vertical multiple frequency converters to connect one to one, establish the shared governor of connection, supply air temperature sensing with whole blowers at blower
Device, return air temperature sensor, return air humidity sensor and controller；
The air-supply temperature of air-conditioning in the wind pushing temperature sensor, return air temperature sensor and return air humidity sensor acquisition computer room
Degree, return air temperature and humidity, are transmitted to controller；
The controller includes: starting number and time control module, optimal data computing module and control operation module；
The starting number and time control module, for controlling in air-conditioning according to the return air temperature and default computer room temperature
The number of compressor start and starting time；
The optimal data computing module, for utilizing increment type PID algorithm, according to the return air temperature and default computer room temperature
Degree calculates the optimal output frequency of compressor, while the revolving speed of blower is adjusted according to the optimal output frequency of compressor；
Control operation module carries out cooling capacity output and control blower with the optimal output frequency for controlling compressor to adjust
Rotational speed afterwards；
The optimal data computing module, is also used to combine increment type PID algorithm and adaptive algorithm, passes through following formula
Two calculate the optimal output frequency of compressor:
△uk =△uk(1+Kx)；
Kx=(preset value-value of feedback)/preset value × 100%；As Kx < 10%, △ uk =△uk；
When Kx >=10% when, △ uk =△uk(1+ Kx)；
Wherein, the value of feedback is the return air temperature of air-conditioning, and the preset value is default return air temperature；
The optimal data computing module, be also used to by the revolving speed of blower it is synchronous with the revolving speed of compressor setting after, according to air-supply
Temperature, return air humidity, default first protection value, default second protection value, default third protection value and the 4th protection value are to blower
Revolving speed be adjusted；
If supply air temperature is less than default first protection value, the revolving speed for controlling blower cannot be less than default second protection value；If returning
Wind moisture is greater than third protection value, then controls rotation speed of fan and be not greater than the 4th protection value；
Independent governor is arranged in blower, and the individually maximum speed and minimum speed of setting blower.
5. the air-conditioner control system according to claim 4 based on pid algorithm, which is characterized in that the starting number and
Time control module includes:
First condition judging unit then starts the first compression for when meeting condition T2 > T+k1, and when compressor-free is run
Machine；
Second condition judging unit, for when meeting condition T2 > T+k2, and the revolving speed of the first compressor is maximum value, and is protected
After holding the first preset time T IME1, start the second compressor；
Third condition judging unit, for when meeting condition T2 < T-k3, and the revolving speed of a first compressor and a second compressor is
Minimum value then stops the operation of the second compressor or the first compressor after then keeping the second preset time T IME2；
Fourth condition judging unit, for when meeting condition T2 < T-k4, and the first compressor being currently running or the second pressure
The revolving speed of contracting machine is minimum value, and after keeping third preset time T IME3, then stops all compressors operations；
Wherein, the T2 is return air temperature, and T is that default computer room temperature, k2 > k1, k4 > k3, and the value of k1, k2, k3 and k4 are not
Constant greater than 2；The value of described TIME1, TIME2 and TIME3 are constant.
6. the air-conditioner control system according to claim 4 based on pid algorithm, which is characterized in that the increment type PID is calculated
Method is calculated by following formula one:
△uk= uk-uk-1= Kp×△ek+ Ki×ek+ Kd×[△ek-△ek-1]；
ek=T-T2；△ek=ek-ek-1, △ ek-1=ek-1-ek-2；
Wherein, T is default computer room temperature, and T2 is return air temperature, and described Kp, Ki and Kd are constant.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4850200A (en) * | 1987-07-10 | 1989-07-25 | Kabushiki Kaisha Toshiba | Refrigerating circuit device for air conditioning apparatus and control method thereof |
| CN2451979Y (en) * | 2000-10-24 | 2001-10-03 | 顺德市格兰仕电器实业有限公司 | Air conditioner with multi-compressor |
| CN102536767A (en) * | 2012-01-04 | 2012-07-04 | 青岛海尔空调电子有限公司 | Compressor staring and stopping control method for water-cooling compressor set with compressors |
| CN103512154A (en) * | 2013-08-19 | 2014-01-15 | 南京天加空调设备有限公司 | Modular multiple on-line control method |
| CN104697109A (en) * | 2014-12-22 | 2015-06-10 | 青岛海尔空调器有限总公司 | Refrigeration control method, control device and variable frequency air conditioner |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2850440B2 (en) * | 1990-02-07 | 1999-01-27 | 松下電器産業株式会社 | Operation control device of air conditioner equipped with refrigerant heater |
-
2016
- 2016-08-18 CN CN201610683415.2A patent/CN106288197B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4850200A (en) * | 1987-07-10 | 1989-07-25 | Kabushiki Kaisha Toshiba | Refrigerating circuit device for air conditioning apparatus and control method thereof |
| CN2451979Y (en) * | 2000-10-24 | 2001-10-03 | 顺德市格兰仕电器实业有限公司 | Air conditioner with multi-compressor |
| CN102536767A (en) * | 2012-01-04 | 2012-07-04 | 青岛海尔空调电子有限公司 | Compressor staring and stopping control method for water-cooling compressor set with compressors |
| CN103512154A (en) * | 2013-08-19 | 2014-01-15 | 南京天加空调设备有限公司 | Modular multiple on-line control method |
| CN104697109A (en) * | 2014-12-22 | 2015-06-10 | 青岛海尔空调器有限总公司 | Refrigeration control method, control device and variable frequency air conditioner |
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