CN115560449A - Air conditioner and air conditioner compressor operation frequency adjusting method and system - Google Patents
Air conditioner and air conditioner compressor operation frequency adjusting method and system Download PDFInfo
- Publication number
- CN115560449A CN115560449A CN202211288057.7A CN202211288057A CN115560449A CN 115560449 A CN115560449 A CN 115560449A CN 202211288057 A CN202211288057 A CN 202211288057A CN 115560449 A CN115560449 A CN 115560449A
- Authority
- CN
- China
- Prior art keywords
- compressor
- temperature difference
- temperature
- preset
- operating frequency
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 68
- 238000004590 computer program Methods 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000005057 refrigeration Methods 0.000 claims description 6
- 238000012935 Averaging Methods 0.000 claims description 4
- 238000004378 air conditioning Methods 0.000 claims 3
- 230000007547 defect Effects 0.000 abstract description 2
- 238000004891 communication Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000004364 calculation method Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000010354 integration Effects 0.000 description 3
- 230000010355 oscillation Effects 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 238000013178 mathematical model Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- 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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- 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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/46—Improving electric energy efficiency or saving
-
- 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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
-
- 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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
-
- 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
- F24F11/89—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
- F25B2600/021—Inverters therefor
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides an air conditioner, and an air conditioner compressor operation frequency adjusting method and system, wherein the air conditioner comprises the following steps: acquiring the indoor environment temperature; comparing the indoor environment temperature with a preset temperature to generate a temperature difference value; comparing the temperature difference with a preset threshold value to generate a compressor operation frequency adjusting instruction; the compressor operation frequency adjusting instruction is used for changing the compressor operation frequency through a preset PID control model, the defects of single control mode and high power consumption of the existing air conditioner compressor are overcome, the compressor frequency is dynamically adjusted, and the power consumption is reduced.
Description
Technical Field
The invention relates to the technical field of air conditioner control, in particular to an air conditioner, and an air conditioner compressor operation frequency adjusting method and system.
Background
After the air conditioner is started, the air conditioner usually works according to a set mode, the indoor environment temperature is compared with the preset temperature, the difference value between the indoor environment temperature and the preset temperature is calculated, the compressor is controlled to be started, heating or refrigerating is carried out, and the compressor is controlled to stop running until the difference value between the indoor environment temperature and the preset temperature is lower than a set value or the indoor environment temperature is equal to the preset temperature. However, when the compressor stops operating for a period of time, the indoor ambient temperature changes, and the difference between the indoor ambient temperature and the preset temperature is too large, the compressor has to be started again to adjust the temperature until the difference between the indoor ambient temperature and the preset temperature is lower than the set value again. The frequent starting of the compressor can cause adverse effect on the service life of the compressor and increase the power consumption. And the compressor is restarted after shutting down, and the indoor ambient temperature can not be adjusted to the hot-blast or cold wind that blow off fast in real time, need wait for a period and just can effectively work, leads to user's use to experience not good.
Disclosure of Invention
The invention provides an air conditioner, and an air conditioner compressor operation frequency adjusting method and system, which are used for overcoming the defects of frequent starting and high power consumption of a compressor caused by a single control mode of the conventional air conditioner compressor, and realizing dynamic adjustment of the frequency of the compressor and reduction of power consumption.
The invention provides an air conditioner compressor running frequency adjusting method, which comprises the following steps:
acquiring the indoor environment temperature;
comparing the indoor environment temperature with a preset temperature to generate a temperature difference value;
comparing the temperature difference with a preset threshold value to generate a compressor operation frequency adjusting instruction;
and the compressor running frequency adjusting instruction is used for changing the running frequency of the compressor through a preset PID control model.
According to the method for adjusting the operating frequency of the air conditioner compressor, provided by the invention, the step of acquiring the indoor environment temperature specifically comprises the following steps:
collecting indoor environment temperature for multiple times through temperature sensing equipment of an air conditioner to generate multiple initial indoor environment temperature data;
and averaging the plurality of initial indoor environment temperature data to generate a final indoor environment temperature value.
According to the method for adjusting the operating frequency of the air conditioner compressor, provided by the invention, the indoor environment temperature is compared with the preset temperature to generate a temperature difference value, and the method specifically comprises the following steps:
the indoor environment temperature is differed from the preset temperature to generate temperature difference data;
taking the absolute value of the temperature difference data as the temperature difference value in the heating mode;
and in a refrigeration mode, taking temperature difference data as the temperature difference value.
According to the air conditioner compressor operation frequency adjusting method provided by the invention, the temperature difference value is compared with a preset threshold value to generate a compressor operation frequency adjusting instruction, and the method specifically comprises the following steps:
comparing the temperature difference with a first preset threshold in preset thresholds to generate a comparison result;
and generating the compressor operation frequency adjusting instruction according to the comparison result.
According to the method for adjusting the operating frequency of the air conditioner compressor provided by the invention, the compressor operating frequency adjusting instruction is used for changing the operating frequency of the compressor through a preset PID control model, and the method specifically comprises the following steps:
under the condition that the temperature difference value is larger than a first preset threshold value according to the comparison result, controlling the compressor to work according to the highest operation frequency according to the compressor operation frequency adjusting instruction through a preset PID control model;
and under the condition that the temperature difference value is smaller than or equal to a first preset threshold value according to the comparison result, controlling the compressor to reduce the operation frequency through a preset PID control model according to the operation frequency adjusting instruction of the compressor.
According to the air conditioner compressor operation frequency adjusting method provided by the invention, under the condition that the comparison result is that the temperature difference value is less than or equal to the first preset threshold value, the compressor is controlled to reduce the operation frequency through a preset PID control model according to the compressor operation frequency adjusting instruction, and the method comprises the following steps:
and under the condition that the temperature difference value is smaller than or equal to a first preset threshold value and larger than a second preset threshold value, controlling the compressor to reduce the running frequency through a preset PID control model according to the running frequency adjusting instruction of the compressor, and working according to the first running frequency.
According to the air conditioner compressor operation frequency adjusting method provided by the invention, under the condition that the comparison result is that the temperature difference value is less than or equal to the first preset threshold value, the compressor is controlled to reduce the operation frequency through the preset PID control model according to the compressor operation frequency adjusting instruction, and the method further comprises the following steps:
under the condition that the temperature difference value is smaller than or equal to a second preset threshold value and larger than a third preset threshold value, controlling the compressor to reduce the running frequency through a preset PID control model according to the running frequency adjusting instruction of the compressor, and working according to the second running frequency;
and under the condition that the temperature difference value is less than or equal to a third preset threshold value, the compressor keeps working at the lowest running frequency.
According to the air conditioner compressor operation frequency adjusting method provided by the invention, the lowest operation frequency is less than a second operation frequency, the second operation frequency is less than a first operation frequency, and the first operation frequency is less than a maximum operation frequency.
The invention also provides an air conditioner compressor running frequency adjusting system, which comprises:
the data acquisition module is used for acquiring the indoor environment temperature;
the comparison module is used for comparing the indoor environment temperature with a preset temperature to generate a temperature difference value;
the instruction generating module is used for comparing the temperature difference value with the preset threshold value to generate a compressor operation frequency adjusting instruction;
and the frequency modulation module is used for changing the running frequency of the compressor through a preset PID control model.
The invention also provides an air conditioner, which comprises a memory, a processor and a computer program which is stored on the memory and can be run on the processor, wherein when the processor executes the program, the method for adjusting the running frequency of the air conditioner compressor is realized.
According to the air conditioner and the method and the system for adjusting the running frequency of the air conditioner compressor, the running frequency of the compressor is continuously reduced through the PID control model by calculating the temperature difference between the indoor environment temperature and the preset temperature and comparing the temperature difference with the preset threshold value. In the dynamic adjustment process, the compressor does not need to be frequently started and stopped, the frequent starting and stopping of the air conditioner compressor are avoided, the electric quantity consumption is reduced, the service life of the compressor is prolonged, meanwhile, the indoor environment temperature can be rapidly adjusted, and the best use experience is provided for users.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic flow chart of an operating frequency adjusting method for an air conditioner compressor according to the present invention;
FIG. 2 is a second schematic flow chart of a method for adjusting an operating frequency of an air conditioner compressor according to the present invention;
fig. 3 is a third schematic flow chart of an operation frequency adjustment method for an air conditioner compressor according to the present invention;
FIG. 4 is a fourth schematic flow chart of a method for adjusting the operating frequency of an air conditioner compressor according to the present invention;
FIG. 5 is a fifth flowchart illustrating a method for adjusting an operating frequency of an air conditioner compressor according to the present invention;
FIG. 6 is a schematic diagram of the module connection of an air conditioner compressor operation frequency adjustment system according to the present invention;
fig. 7 is a schematic structural diagram of an electronic device provided by the present invention.
Reference numerals:
110: a data acquisition module; 120: a comparison module; 130: an instruction generation module; 140: a frequency modulation module;
710: a processor; 720: a communication interface; 730: a memory; 740: a communication bus.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
An operation frequency adjusting method of an air conditioner compressor according to the present invention is described with reference to fig. 1 to 5, which includes:
s100, acquiring indoor environment temperature;
s200, comparing the indoor environment temperature with a preset temperature to generate a temperature difference value;
s300, comparing the temperature difference with a preset threshold value to generate a compressor running frequency adjusting instruction;
and S400, the compressor running frequency adjusting instruction is used for changing the compressor running frequency through a preset PID control model.
In the practical application process, the temperature difference value is continuously obtained between the indoor environment temperature and the preset temperature, and the operating frequency of the compressor is correspondingly adjusted according to the range of the temperature difference value, so that the compressor is always kept in a reasonable operating frequency range, the compressor is prevented from being started and stopped frequently, and the indoor environment temperature can be adjusted rapidly.
Acquiring the indoor environment temperature, specifically comprising:
s101, collecting indoor environment temperature for multiple times through temperature sensing equipment of an air conditioner to generate multiple initial indoor environment temperature data;
and S102, averaging the plurality of initial indoor environment temperature data to generate a final indoor environment temperature value.
Install temperature sensing equipment in the air conditioner, gather initial indoor ambient temperature data many times through temperature sensing equipment in setting for the time span, because indoor environment is complicated changeable, may have human body or other heat source/cold source to be close to temperature sensing equipment, then can lead to the indoor ambient temperature data inaccuracy of instantaneous collection, be difficult to accurate reaction indoor ambient temperature data. Therefore, the current indoor environment temperature can be accurately reflected by collecting a plurality of indoor environment temperature data, eliminating extreme abnormal values and then calculating the average value. The accurate indoor environment temperature data is acquired, so that the difference between the indoor environment temperature data and the set temperature can be accurately compared, and the running frequency of the compressor can be adjusted.
The preset temperature is automatically obtained according to the user setting conditions, for example: in the heating mode, the indoor environment temperature is low, the preset temperature is usually set to 23 ℃, and if higher temperature is needed, the temperature is increased through a remote controller or a control panel; under the refrigeration mode, the indoor environment temperature is higher, and the preset temperature is usually set to be 20 ℃, if lower temperature is needed, the temperature is reduced through a remote controller or a control panel, and after the preset temperature value set by a user is obtained, the temperature difference value can be accurately calculated. Even if the user changes the preset temperature in the using process, the temperature difference between the new preset temperature and the indoor environment temperature can be calculated in time.
Comparing the indoor environment temperature with a preset temperature to generate a temperature difference value, and specifically comprising:
s201, subtracting the indoor environment temperature from a preset temperature to generate temperature difference data;
s202, under the heating mode, taking the absolute value of the temperature difference data as the temperature difference value;
and S203, taking temperature difference data as the temperature difference value in the refrigeration mode.
After the accurate indoor environment temperature and the preset temperature are obtained, difference is made to generate temperature difference data, the indoor environment temperature is possibly higher than the preset temperature or lower than the preset temperature due to the fact that the corresponding environments in different seasons are different, and the temperature difference data are processed according to actual conditions in order to guarantee universality of the temperature difference data. In the heating mode, the indoor environment temperature is lower than the preset temperature, when the temperature difference data formed by subtracting the preset temperature from the indoor environment temperature is a negative number, an absolute value is obtained and converted into a positive number; under the refrigeration mode, the indoor ambient temperature is greater than the preset temperature, and the temperature difference data formed when the indoor ambient temperature subtracts the preset temperature is a positive number and can be directly used without calculating an absolute value. Through the processing of the temperature difference data, the final temperature difference values are positive numbers, and the subsequent data utilization is facilitated.
Comparing the temperature difference with a preset threshold value to generate a compressor operation frequency adjusting instruction, specifically comprising:
s301, comparing the temperature difference value with a first preset threshold value in preset threshold values to generate a comparison result;
s302, generating the compressor operation frequency adjusting instruction according to the comparison result.
The compressor operation frequency adjustment instruction is used for changing the compressor operation frequency through a preset PID control model, and specifically comprises the following steps:
s401, under the condition that the temperature difference value is larger than a first preset threshold value according to the comparison result, controlling the compressor to work according to the highest running frequency according to the compressor running frequency adjusting instruction through a preset PID control model;
s402, under the condition that the temperature difference value is smaller than or equal to a first preset threshold value according to the comparison result, controlling the compressor to reduce the running frequency through a preset PID control model according to the compressor running frequency adjusting instruction, and working according to the first running frequency;
the first operating frequency is less than the highest operating frequency.
According to the invention, the temperature difference value is obtained and then the range of the temperature difference value is judged, different compressor operation frequencies are matched according to different temperature difference values, so that rapid temperature regulation is realized, frequent start and stop are not needed, and rapid aging and damage of the compressor are avoided. And after the range of the temperature difference value is determined, controlling the running frequency of the compressor through a preset PID control model.
In engineering practice, the most widely used control law of the regulator is proportional, integral and derivative control, which is called PID control for short, also called PID regulation. The PID controller is one of the main technologies for industrial control due to its simple structure, good stability, reliable operation and convenient adjustment. When the structure and parameters of the controlled object cannot be completely mastered or an accurate mathematical model is not obtained, and other technologies of the control theory are difficult to adopt, the structure and parameters of the system controller must be determined by experience and field debugging, and the application of the PID control technology is most convenient. I.e., a system and a controlled object are not completely known, or system parameters cannot be obtained by an effective measurement means, the PID control technique is most suitable. The PID control is actually PI and PD control. The PID controller calculates the control quantity by using proportion, integral and differential according to the error of the system
Proportional (P) control, which is the simplest control method. The output of the controller is proportional to the input error signal. There is a Steady state error in the system output when there is only proportional control (Steady-state error).
Integral (I) control, in which the output of the controller is proportional to the integral of the input error signal. For an automatic control System, if there is a Steady-state Error after entering a Steady state, the control System is called as a System with a Steady-state Error or a System with a difference Error for short. To eliminate steady state errors, an "integral term" must be introduced into the controller. The integral term integrates the error over time, increasing with time. Thus, even if the error is small, the integral term increases with time, which pushes the output of the controller to increase and further reduce the steady state error until it approaches zero. Therefore, the proportional Plus Integral (PI) controller can enable the system to have almost no steady-state error after the system enters the steady state.
The derivative (D) control in which the output of the controller is in a proportional relationship with the derivative of the input error signal (i.e., the rate of change of the error). The automatic control system may oscillate or even destabilize during the adjustment process to overcome the error. The reason for this is that the presence of a large inertia component (link) or a hysteresis (delay) component has the effect of suppressing the error, the variation of which always lags behind the variation of the error. The solution is to "lead" the change in the effect of the suppression error, i.e. when the error is close to zero, the effect of the suppression error should be zero. That is, it is often not sufficient to introduce a "proportional" term into the controller, which acts to amplify only the magnitude of the error, but to add a "derivative term" which predicts the tendency of the error to change, so that a controller with proportional + derivative can bring the control action of the suppressed error to zero or even negative in advance, thus avoiding severe overshoot of the controlled quantity. Therefore, for controlled objects with greater inertia or hysteresis, the proportional Plus Derivative (PD) controller can improve the dynamic characteristics of the system during adjustment.
The parameter tuning of the PID controller is the core content of the control system design. It determines the proportional coefficient, integral time and differential time of PID controller according to the controlled process characteristic. There are many methods for setting parameters of a PID controller, and there are two broad categories in summary: one is theoretical calculation and determination. The method is mainly used for determining the parameters of the controller through theoretical calculation according to a mathematical model of a system. The calculation data obtained by this method are not necessarily directly usable, but must be adjusted and modified by engineering practice. And the second is an engineering setting method which mainly depends on engineering experience and is directly carried out in the test of the control system, and the method is simple and easy to master and is widely adopted in engineering practice. The engineering setting method of PID controller parameters mainly comprises a critical proportion method, a reaction curve method and an attenuation method. The two methods have the characteristics that the common point is that the controller parameters are adjusted according to an engineering empirical formula after passing a test. However, the controller parameters obtained by any method need to be finally adjusted and perfected in actual operation. The critical ratio method is generally used. The method for setting the PID controller parameters comprises the following steps: firstly, a short enough sampling period is pre-selected to enable a system to work; adding a proportional control link until critical oscillation occurs in the step response of the system to input, and recording a proportional amplification factor and a critical oscillation period at the moment; and thirdly, calculating parameters of the PID controller through a formula under a certain control degree.
PID control eliminates errors through integration, while differential control can reduce overshoot and accelerate reaction, so that the advantages of PI control and PD control are integrated, and the shortcomings of PI control and PD control are eliminated. From the frequency domain, the PID control acts on the low frequency band of the system by integration to improve the stability of the system, and the differentiation acts on the middle frequency band of the system to improve the dynamic performance of the system.
Proportional (P) control can react to errors quickly, thereby reducing steady state errors. However, proportional control cannot eliminate steady-state errors. The increase of the scaling factor causes instability of the system. The effect of the integral (I) control is: as long as the system has errors, the integral controller continuously accumulates and outputs a control quantity to eliminate the errors. Thus, as long as there is sufficient time, the integral control will be able to completely eliminate the error, making the system error zero, thereby eliminating the steady state error. Too strong an integration will cause the system to overshoot, or even oscillate. The differential (D) control can reduce overshoot, overcome oscillation, improve system stability, and accelerate system dynamic response speed, reduce adjustment time, and improve system dynamic performance. The control models can be classified into different control models such as P, PI, PD, PID, and the like according to the control characteristics of different controlled objects.
In the invention, the temperature difference value is compared with a first preset threshold value to generate a comparison result, and in the initial operation stage of the air conditioner, the temperature difference value is larger than the first preset threshold value, so that the compressor works according to the maximum operation frequency to realize the rapid reduction of the temperature difference value and the rapid approach of the indoor environment temperature to the preset temperature.
After the compressor operates for a period of time according to the maximum power, the temperature difference between the indoor environment temperature and the preset temperature is reduced, when the temperature difference is lower than a first preset threshold value, whether the temperature difference is larger than a second preset threshold value or not is judged, and when the temperature difference is between the first preset threshold value and the second preset threshold value, the operation frequency of the compressor is reduced through a PID control model, and the compressor operates according to the first operation frequency;
when the temperature difference value is between the second preset threshold value and the third preset threshold value, the operation frequency of the compressor is reduced through the PID control model, and the compressor works according to the second operation frequency;
and continuously reducing the temperature difference value, judging whether the temperature difference value is less than or equal to a third preset threshold value, and reducing the running frequency of the compressor through the PID control model when the temperature difference value is less than or equal to the third preset threshold value, and working according to the lowest running frequency. In the invention, the lowest operation frequency is less than a second operation frequency, the second operation frequency is less than a first operation frequency, and the first operation frequency is less than a maximum operation frequency. The compressor is guaranteed not to stop running, frequent starting or stopping of the compressor is avoided, and loss of the compressor is reduced. And when indoor ambient temperature changes, because the compressor is in dynamic balance adjustment's state all the time, the operating condition of compressor can quick adjustment realizes quick adjustment indoor ambient temperature, promotes user's body and feels the comfort level.
According to the method for adjusting the running frequency of the air conditioner compressor, the running frequency of the compressor is continuously reduced through the PID control model by calculating the temperature difference between the indoor environment temperature and the preset temperature and comparing the temperature difference with the preset threshold value. Avoid air condition compressor ceaselessly to start and stop, reduce the electric quantity consumption, promote the compressor life-span, simultaneously can quick adjustment indoor ambient temperature, experience for the user provides the best use.
Referring to fig. 6, the present invention also discloses an air conditioner compressor operation frequency adjusting system, which includes:
a data acquisition module 110, configured to acquire an indoor environment temperature;
a comparison module 120, configured to compare the indoor environment temperature with a preset temperature, and generate a temperature difference;
the instruction generating module 130 is configured to compare the temperature difference with the preset threshold, and generate a compressor operation frequency adjusting instruction;
and the frequency modulation module 140 is used for changing the running frequency of the compressor through a preset PID control model.
The data acquisition module 110 acquires the indoor environment temperature for multiple times through temperature sensing equipment of the air conditioner to generate multiple initial indoor environment temperature data;
and averaging the plurality of initial indoor environment temperature data to generate a final indoor environment temperature value.
The comparison module 120 is used for subtracting the indoor environment temperature from a preset temperature to generate temperature difference data;
taking the absolute value of temperature difference data as the temperature difference value in the heating mode;
and in a refrigeration mode, taking temperature difference data as the temperature difference value.
The instruction generating module 130 compares the temperature difference value with a first preset threshold value in preset threshold values to generate a comparison result;
and generating the compressor operation frequency adjusting instruction according to the comparison result.
The frequency modulation module 140 controls the compressor to work according to the highest operating frequency according to the compressor operating frequency adjusting instruction through a preset PID control model under the condition that the temperature difference value is larger than a first preset threshold value according to the comparison result;
and under the condition that the temperature difference value is smaller than or equal to a first preset threshold value according to the comparison result, controlling the compressor to reduce the operation frequency through a preset PID control model according to the operation frequency adjusting instruction of the compressor.
Under the condition that the temperature difference value is smaller than or equal to a first preset threshold value and larger than a second preset threshold value, controlling the compressor to reduce the operation frequency through a preset PID control model, and working according to the first operation frequency;
the first operating frequency is less than a maximum operating frequency.
Under the condition that the temperature difference value is smaller than or equal to a second preset threshold value and larger than a third preset threshold value, controlling the compressor to reduce the operation frequency through a preset PID control model, and working according to a second operation frequency, wherein the second operation frequency is smaller than the first operation frequency;
and under the condition that the temperature difference value is less than or equal to a third preset threshold value, the compressor keeps working at the lowest running frequency.
According to the air conditioner compressor running frequency adjusting system, the temperature difference value between the indoor environment temperature and the preset temperature is calculated, the temperature difference value is compared with the preset threshold value, and the purpose that the running frequency of the compressor is continuously reduced through the PID control model is achieved. Avoid air condition compressor ceaselessly to start and stop, reduce the electric quantity consumption, promote the compressor life-span, simultaneously can quick adjustment indoor ambient temperature, experience for the user provides the best use.
Fig. 7 illustrates a physical structure diagram of an electronic device, and as shown in fig. 7, the electronic device may include: a processor (processor) 710, a communication Interface (Communications Interface) 720, a memory (memory) 730, and a communication bus 740, wherein the processor 710, the communication Interface 720, and the memory 730 communicate with each other via the communication bus 740. The processor 710 may call logic instructions in the memory 730 to perform a method for adjusting an operating frequency of an air conditioner compressor, the method comprising: acquiring the indoor environment temperature;
comparing the indoor environment temperature with a preset temperature to generate a temperature difference value;
comparing the temperature difference with a preset threshold value to generate a compressor operation frequency adjusting instruction;
and the compressor running frequency adjusting instruction is used for changing the running frequency of the compressor through a preset PID control model.
In addition, the logic instructions in the memory 730 can be implemented in the form of software functional units and stored in a computer readable storage medium when the software functional units are sold or used as independent products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In another aspect, the present invention also provides a computer program product, where the computer program product includes a computer program, the computer program can be stored on a non-transitory computer readable storage medium, and when the computer program is executed by a processor, a computer can execute a method for adjusting an operating frequency of an air conditioner compressor provided by the above methods, where the method includes: acquiring the indoor environment temperature;
comparing the indoor environment temperature with a preset temperature to generate a temperature difference value;
comparing the temperature difference with a preset threshold value to generate a compressor operation frequency adjusting instruction;
and the compressor running frequency adjusting instruction is used for changing the running frequency of the compressor through a preset PID control model.
In still another aspect, the present invention also provides a non-transitory computer-readable storage medium, on which a computer program is stored, the computer program being implemented by a processor to perform the method for adjusting an operating frequency of an air conditioner compressor provided by the above methods, the method including: acquiring indoor environment temperature;
comparing the indoor environment temperature with a preset temperature to generate a temperature difference value;
comparing the temperature difference with a preset threshold value to generate a compressor operation frequency adjusting instruction;
and the compressor running frequency adjusting instruction is used for changing the running frequency of the compressor through a preset PID control model.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. An air conditioner compressor operation frequency adjusting method is characterized by comprising the following steps:
acquiring the indoor environment temperature;
comparing the indoor environment temperature with a preset temperature to generate a temperature difference value;
comparing the temperature difference with a preset threshold value to generate a compressor operation frequency adjusting instruction;
and the compressor running frequency adjusting instruction is used for changing the running frequency of the compressor through a preset PID control model.
2. The method for adjusting the operating frequency of the air conditioner compressor according to claim 1, wherein the obtaining of the indoor ambient temperature specifically comprises:
collecting indoor environment temperature for multiple times through temperature sensing equipment of an air conditioner to generate multiple initial indoor environment temperature data;
and averaging the plurality of initial indoor environment temperature data to generate a final indoor environment temperature value.
3. The method for adjusting the operating frequency of the air conditioning compressor according to claim 1, wherein the step of comparing the indoor ambient temperature with a preset temperature to generate a temperature difference specifically comprises:
the indoor environment temperature is differed from the preset temperature to generate temperature difference data;
taking the absolute value of the temperature difference data as the temperature difference value in the heating mode;
and in a refrigeration mode, taking the temperature difference data as the temperature difference value.
4. The method for adjusting the operating frequency of the air-conditioning compressor according to claim 1, wherein the step of comparing the temperature difference value with a preset threshold value to generate a compressor operating frequency adjusting instruction specifically comprises the steps of:
comparing the temperature difference with a first preset threshold value in preset threshold values to generate a comparison result;
and generating the compressor operation frequency adjusting instruction according to the comparison result.
5. The method for adjusting the operating frequency of the air conditioner compressor according to claim 1, wherein the compressor operating frequency adjusting instruction is used for changing the operating frequency of the compressor through a preset PID control model, and specifically comprises:
under the condition that the temperature difference value is larger than a first preset threshold value according to the comparison result, controlling the compressor to work according to the highest operation frequency according to the compressor operation frequency adjusting instruction through a preset PID control model;
and under the condition that the temperature difference value is smaller than or equal to a first preset threshold value according to the comparison result, controlling the compressor to reduce the operation frequency through a preset PID control model according to the operation frequency adjusting instruction of the compressor.
6. The method for adjusting the operating frequency of the air conditioning compressor according to claim 5, wherein if the comparison result shows that the temperature difference is less than or equal to a first preset threshold, the method controls the compressor to reduce the operating frequency according to the compressor operating frequency adjusting instruction through a preset PID control model, and comprises:
and under the condition that the temperature difference value is smaller than or equal to a first preset threshold value and larger than a second preset threshold value, controlling the compressor to reduce the running frequency through a preset PID control model according to the running frequency adjusting instruction of the compressor, and working according to the first running frequency.
7. The method as claimed in claim 6, wherein if the comparison result is that the temperature difference is less than or equal to a first preset threshold, the method controls the compressor to reduce the operating frequency according to the compressor operating frequency adjusting command through a preset PID control model, and further comprising:
under the condition that the temperature difference value is smaller than or equal to a second preset threshold value and larger than a third preset threshold value, controlling the compressor to reduce the running frequency through a preset PID control model according to the running frequency adjusting instruction of the compressor, and working according to the second running frequency;
and under the condition that the temperature difference value is less than or equal to a third preset threshold value, the compressor keeps working at the lowest running frequency.
8. The air conditioner compressor operating frequency adjustment method as claimed in claim 7, wherein the lowest operating frequency is less than a second operating frequency, the second operating frequency is less than a first operating frequency, and the first operating frequency is less than a maximum operating frequency.
9. An air conditioner compressor operating frequency adjustment system, the system comprising:
the data acquisition module is used for acquiring the indoor environment temperature;
the comparison module is used for comparing the indoor environment temperature with a preset temperature to generate a temperature difference value;
the instruction generating module is used for comparing the temperature difference value with the preset threshold value to generate a compressor operation frequency adjusting instruction;
and the frequency modulation module is used for changing the running frequency of the compressor through a preset PID control model.
10. An air conditioner comprising a memory, a processor and a computer program stored in and executable on said memory, wherein said processor when executing said program implements the method for adjusting the operating frequency of the compressor of the air conditioner according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211288057.7A CN115560449A (en) | 2022-10-20 | 2022-10-20 | Air conditioner and air conditioner compressor operation frequency adjusting method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211288057.7A CN115560449A (en) | 2022-10-20 | 2022-10-20 | Air conditioner and air conditioner compressor operation frequency adjusting method and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115560449A true CN115560449A (en) | 2023-01-03 |
Family
ID=84747089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211288057.7A Pending CN115560449A (en) | 2022-10-20 | 2022-10-20 | Air conditioner and air conditioner compressor operation frequency adjusting method and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115560449A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116255725A (en) * | 2023-01-15 | 2023-06-13 | 杭州益川电子有限公司 | Compressor driven variable frequency control system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104515254A (en) * | 2013-09-30 | 2015-04-15 | 海尔集团公司 | Air conditioning compressor frequency control method |
| CN106524395A (en) * | 2016-10-19 | 2017-03-22 | 青岛海尔空调器有限总公司 | Air-conditioner frequency control method and device and air conditioner |
| CN107178873A (en) * | 2017-05-26 | 2017-09-19 | 青岛海尔空调器有限总公司 | Transducer air conditioning and its control method |
| WO2018006596A1 (en) * | 2016-07-04 | 2018-01-11 | 青岛海尔空调器有限总公司 | Method of adjusting electronic expansion valve of outdoor unit of air-conditioner |
| CN114791150A (en) * | 2022-04-20 | 2022-07-26 | 青岛海尔空调器有限总公司 | Air conditioner frequency modulation control method, control device, electronic equipment and storage medium |
| CN114811830A (en) * | 2022-04-13 | 2022-07-29 | 青岛海尔空调器有限总公司 | Air conditioner frequency conversion control method and device, air conditioner and storage medium |
-
2022
- 2022-10-20 CN CN202211288057.7A patent/CN115560449A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104515254A (en) * | 2013-09-30 | 2015-04-15 | 海尔集团公司 | Air conditioning compressor frequency control method |
| WO2018006596A1 (en) * | 2016-07-04 | 2018-01-11 | 青岛海尔空调器有限总公司 | Method of adjusting electronic expansion valve of outdoor unit of air-conditioner |
| CN106524395A (en) * | 2016-10-19 | 2017-03-22 | 青岛海尔空调器有限总公司 | Air-conditioner frequency control method and device and air conditioner |
| CN107178873A (en) * | 2017-05-26 | 2017-09-19 | 青岛海尔空调器有限总公司 | Transducer air conditioning and its control method |
| CN114811830A (en) * | 2022-04-13 | 2022-07-29 | 青岛海尔空调器有限总公司 | Air conditioner frequency conversion control method and device, air conditioner and storage medium |
| CN114791150A (en) * | 2022-04-20 | 2022-07-26 | 青岛海尔空调器有限总公司 | Air conditioner frequency modulation control method, control device, electronic equipment and storage medium |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116255725A (en) * | 2023-01-15 | 2023-06-13 | 杭州益川电子有限公司 | Compressor driven variable frequency control system |
| CN116255725B (en) * | 2023-01-15 | 2024-05-28 | 杭州益川电子有限公司 | Compressor driven variable frequency control system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111156748B (en) | Variable frequency air conditioner limiting power control method, storage medium and air conditioner | |
| CN113294885B (en) | Air conditioner control method and device, air conditioner and computer readable storage medium | |
| CN112696804B (en) | Noise reduction control method and device for indoor unit of air conditioner and air conditioner | |
| CN115560449A (en) | Air conditioner and air conditioner compressor operation frequency adjusting method and system | |
| CN111397169A (en) | Air conditioner frequency limiting method, air conditioner and storage medium | |
| CN111426041B (en) | Method and system for quickly stabilizing frequency of variable frequency air conditioner compressor and air conditioner device | |
| CN114523966A (en) | Vehicle speed control method and device, electronic equipment and readable storage medium | |
| CN112664455B (en) | Lubrication adjusting method and device for compressor, electronic equipment and storage medium | |
| CN110848899B (en) | Variable frequency air conditioner operation control method, computer readable storage medium and air conditioner | |
| CN114112459B (en) | Air conditioner test operation control method and air conditioner | |
| CN113932325A (en) | Control method and system of machine room air conditioner, electronic equipment and storage medium | |
| CN115076867A (en) | Electronic expansion valve control method and device, air conditioner and electronic equipment | |
| CN115709722A (en) | Vehicle control method and device, vehicle and storage medium | |
| CN110594991A (en) | Heating bias flow control method and system for multi-split air conditioner and multi-split air conditioner system | |
| CN113819639B (en) | Control method and device for adjusting frequency of air conditioner compressor | |
| CN113865016A (en) | Air conditioning system control method and device and air conditioning system | |
| CN113324328A (en) | Method and device for determining shielding frequency of refrigeration equipment and storage medium | |
| CN112728821B (en) | Compressor ultralow-temperature safe operation control method, device, equipment and storage medium | |
| CN113834198B (en) | Control method of air conditioner, air conditioner and storage medium | |
| JP7197873B1 (en) | Output control device, output control program, and solar self-consumption system using the same | |
| CN113803845B (en) | Automatic APF debugging method and device for air conditioner, computer equipment and storage medium | |
| CN115111784A (en) | Temperature control method and device for water heater, water heater and storage medium | |
| CN115371214A (en) | Air conditioner control method and device and air conditioner system | |
| CN114777291A (en) | Energy-saving control method, device and equipment for air conditioner and storage medium | |
| CN118312005A (en) | Circuit work adjusting method, circuit module and chip |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |