CN106524395A - Air-conditioner frequency control method and device and air conditioner - Google Patents
Air-conditioner frequency control method and device and air conditioner Download PDFInfo
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- CN106524395A CN106524395A CN201610909358.5A CN201610909358A CN106524395A CN 106524395 A CN106524395 A CN 106524395A CN 201610909358 A CN201610909358 A CN 201610909358A CN 106524395 A CN106524395 A CN 106524395A
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- temperature difference
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- pid
- frequency
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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
- F24F11/62—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
-
- 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
-
- 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
- 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
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses an air-conditioner frequency control method and device and an air conditioner. The air-conditioner frequency control method comprises the steps that the current indoor temperature and the current temperature difference between the current indoor temperature and the target indoor temperature are obtained; the current temperature difference is compared with a set value; if the absolute value of the current temperature difference is larger than the set value, conventional PID operation is conducted based on the current temperature difference, so that the current operating frequency is obtained; if the absolute value of the current temperature difference is not larger than the set value, non-conventional PID operation with the proportionality coefficient and the differential coefficient both being zero is conducted based on the current temperature difference, so that the current operating frequency is obtained; and a compressor of the air conditioner is controlled to operate according to the current operating frequency. By adoption of the air-conditioner frequency control method and device and the air conditioner, the problem that the frequency fluctuation of the compressor is caused by temperature fluctuation when the indoor temperature is approximate to the target temperature, and consequentially discomfort is caused can be solved.
Description
Technical field
The invention belongs to air-conditioning technique field, specifically, is to be related to air-conditioning, more specifically, is to be related to air-conditioning
Control method for frequency, control device and air-conditioning.
Background technology
At present, many air-conditionings are all controlled to compressor frequency using pid algorithm, can be according to current using the method
Indoor temperature controls compressor raising frequency and/or frequency reducing with the size of target indoor temperature difference, so that indoor temperature is maintained
On target temperature, the regulation to indoor temperature is realized.
But, in air-conditioning actual moving process, when indoor temperature, when target temperature is close to, Jing often has 0.3 DEG C or so
Fluctuation, when particularly heating, the hot-air proportion brought by compressor operation is little, can first at the top of room, then slowly under
Heavy, the room temperature fluctuation for thus bringing is bigger.The difference based on indoor temperature and target temperature as deviation, adopt PID
During algorithm control compressor frequency, indoor temperature is close to 0.3 DEG C or so existed during target temperature of fluctuation can be to pressure
Contracting unit frequency produces the fluctuation of lifting frequency 3hz or so, and it is more frequent to fluctuate.Frequently frequency fluctuation can bring noise, affect
The comfort level of user.
The content of the invention
An object of the present invention is to provide a kind of air-conditioning control method for frequency and control device, solves temperature indoors and connects
The problem of discomfort is produced as temperature fluctuation causes compressor frequency fluctuation during close-target temperature.
For achieving the above object, the air-conditioning control method for frequency that the present invention is provided gives reality using following technical proposals
It is existing：
A kind of air-conditioning control method for frequency, methods described include：
Current indoor temperature and the temperature difference between the current indoor temperature and target indoor temperature are obtained, as the current temperature difference；
The current temperature difference is made comparisons with setting value；
If the absolute value of the current temperature difference is more than the setting value, based on the current temperature difference, Traditional PID computing is performed, obtained
Take current operation frequency；In the Traditional PID computing, proportionality coefficient, differential coefficient and integral coefficient are not zero；
If the absolute value of the current temperature difference is not more than the setting value, based on the current temperature difference, proportionality coefficient and micro- is performed
Divide coefficient to be zero unconventional PID arithmetic, obtain current operation frequency；
The compressor of control air-conditioning is run according to the current operation frequency.
Preferably, the integral coefficient phase in the integral coefficient in the unconventional PID arithmetic and the Traditional PID computing
Deng.
Preferably, the Traditional PID and the unconventional PID are increment type PID.
To realize aforementioned invention purpose, the air-conditioning frequency control apparatus that the present invention is provided are using following technical proposals come real
It is existing：
A kind of air-conditioning frequency control apparatus, described device include：
Indoor temperature acquiring unit, for obtain air-conditioning current indoor temperature indoors；
Temperature difference acquiring unit, for obtaining the current indoor temperature and target chamber acquired in the indoor temperature acquiring unit
The temperature difference between interior temperature, and as the current temperature difference；
Temperature Difference Ratio compared with and judging unit, make to compare for the described current temperature difference that obtains the temperature difference acquiring unit and setting value
Compared with, and export comparative result；
Traditional PID arithmetic element, for being the current temperature difference compared with the comparative result exported with judging unit in the Temperature Difference Ratio
Absolute value Traditional PID computing is performed based on the current temperature difference when being more than the setting value, obtain and export current operation frequency
Rate；In the Traditional PID computing, proportionality coefficient, differential coefficient and integral coefficient are not zero；
Unconventional PID arithmetic unit, for being the current temperature compared with the comparative result exported with judging unit in the Temperature Difference Ratio
Proportionality coefficient is performed based on the current temperature difference when poor absolute value is not more than the setting value and differential coefficient be zero it is non-
Traditional PID computing, obtains and exports current operation frequency；
Compressor frequency control unit, for control the compressor of air-conditioning according to the Traditional PID arithmetic element or it is described very
The current operation frequency operation of rule PID arithmetic unit output.
Preferably, the integral coefficient phase in the integral coefficient in the unconventional PID arithmetic and the Traditional PID computing
Deng.
Preferably, the Traditional PID and the unconventional PID are increment type PID.
Present invention also offers a kind of air-conditioning, the air-conditioning includes above-mentioned air-conditioning frequency control apparatus.
Compared with prior art, advantages of the present invention and good effect are：The air-conditioning control method for frequency that the present invention is provided
And the size of the temperature difference between current indoor temperature and target indoor temperature and setting value in control device, is first determined whether, in temperature
When poor absolute value is more than setting value, show that current indoor temperature is larger with target indoor temperature gap, now, is held based on the temperature difference
The Traditional PID computing that row proportionality coefficient, differential coefficient and integral coefficient are not zero, obtains the running frequency of control compressor,
The quick raising frequency of control compressor or frequency reducing so that current indoor temperature is close to target indoor temperature as early as possible, realizes fast regulating temperature, to the greatest extent
Users'comfort demand is met soon；When the absolute value of the temperature difference is not more than setting value, show current indoor temperature close to target
Indoor temperature, in the case of this, is zero unconventional PID arithmetic based on temperature difference execution proportionality coefficient and differential coefficient, obtains control
The running frequency of compressor processed, reduces the regulated quantity of compressor frequency, it is to avoid cause compressor frequency because of the minor fluctuations of temperature
Rate frequent fluctuation and the operation noise problem for fluctuating widely and bringing, further improve the comfort level of user.
After the specific embodiment of the present invention is read in conjunction with the accompanying, the other features and advantages of the invention will become more clear
Chu.
Description of the drawings
Fig. 1 is the flow chart of the one embodiment based on air-conditioning control method for frequency of the present invention；
Fig. 2 is the structured flowchart of the one embodiment based on air-conditioning frequency control apparatus of the present invention.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, below with reference to drawings and Examples,
The present invention is described in further detail.
Fig. 1 is referred to, the flow chart that the figure show the one embodiment based on air-conditioning control method for frequency of the present invention.
As shown in figure 1, the embodiment realizes that the method for air-conditioning FREQUENCY CONTROL includes the process with following steps：
Step 11：Current indoor temperature and the temperature difference between current indoor temperature and target indoor temperature are obtained, as current temperature
Difference.
After starting of air conditioner, current indoor temperature is constantly obtained.Current indoor temperature refer to using certain detection means,
The indoor temperature that employing frequency according to setting is got in real time, for example, using the TEMP of the air-conditioning air inlet for arranging
Device is detected and is got.Then, the temperature difference between current indoor temperature and target indoor temperature is obtained, as the current temperature difference.Its
In, target indoor temperature refers to the desired value for expecting after starting operation of air conditioner that indoor temperature is reached, and the target indoor temperature can
It can be a temperature of user's setting, it is also possible to the temperature that air-conditioning is recommended automatically.
Step 12：The current temperature difference is made comparisons with setting value, specifically the absolute value of the more current temperature difference and setting
The size of value.
Wherein, setting value be known, the temperature value being stored in advance in air-conditioning, be reflect temperature difference size a threshold
Value.Setting value is an integer, and specific value can be selected as needed.
Step 13：Judge the absolute value of the current temperature difference whether more than setting value.If so, execution step 14；If it has not, performing
Step 15.
Step 14：If step 13 judges that the absolute value of the current temperature difference, more than setting value, based on the current temperature difference, is performed normal
Rule PID arithmetic, obtains current operation frequency.Then, execution step 16.
Wherein, in Traditional PID computing, proportionality coefficient, differential coefficient and integral coefficient are not zero.If that is, worked as
The absolute value of the front temperature difference is more than setting value, shows that current indoor temperature is larger with the gap of target indoor temperature.In the case of this,
Perform PID arithmetic to obtain during compressor operating frequency based on the temperature difference, the proportional, differential term and integral term in PID arithmetic is altogether
With working, larger frequency regulating amount is obtained.Based on the temperature difference perform PID arithmetic concrete grammar may be referred to prior art come
Realize.
Step 15：If step 13 judges that the absolute value of the current temperature difference is not more than setting value, based on the current temperature difference, perform
Unconventional PID arithmetic, obtains current operation frequency.Then, execution step 16.
Wherein, in unconventional PID arithmetic, proportionality coefficient and differential coefficient are zero, and integral coefficient is not zero.
That is, if the absolute value of the current temperature difference is not more than setting value, show that current indoor temperature is less with the gap of target indoor temperature,
Current indoor temperature is close to target indoor temperature.In the case of this, compressor operating frequency is obtained PID arithmetic is performed based on the temperature difference
During rate, the proportional and differential term in PID arithmetic is not involved in computing, and obtains frequency regulating amount only using integral term, frequency
Regulated quantity is not affected by difference variation, and regulated quantity is less.Also, if the current temperature difference is not zero, in the presence of integral term,
Frequency regulating amount is not zero, and can guarantee that.
Step 16：The current operation frequency operation that the compressor of control air-conditioning is obtained according to step 14 or step 15, realizes
Control to frequency of air condition compressor.
When unit frequency control is compressed using the method for above-described embodiment, first determine whether current indoor temperature and target chamber
The size of the temperature difference between interior temperature and setting value, when the absolute value of the temperature difference is more than setting value, show current indoor temperature with
Target indoor temperature gap is larger, now, performs proportionality coefficient based on the temperature difference, that differential coefficient and integral coefficient are not zero is normal
Rule PID arithmetic, obtains the running frequency of control compressor, the quick raising frequency of control compressor or frequency reducing so that current indoor temperature
Target indoor temperature is close to as early as possible, fast regulating temperature is realized, meets users'comfort demand as early as possible.It is not more than in the absolute value of the temperature difference
During setting value, show current indoor temperature close to target indoor temperature, in the case of this, proportionality coefficient and micro- is performed based on the temperature difference
Divide coefficient to be zero unconventional PID arithmetic, obtain the running frequency of control compressor, reduce the regulated quantity of compressor frequency,
The operation noise problem for causing compressor frequency frequent fluctuation because of the minor fluctuations of temperature He fluctuating widely and bring is avoided,
The comfort level of user is improved further.
As the uniformity for preferred embodiment, being guarantee control, in Traditional PID computing and unconventional PID arithmetic
Integral coefficient is equal.And, Traditional PID and unconventional PID are increment type PID, to obtain more preferable regulating effect.
Fig. 2 is referred to, the figure show the structured flowchart of the one embodiment based on air-conditioning frequency control apparatus of the present invention.
As shown in Fig. 2 the embodiment realizes construction unit included by the device of air-conditioning FREQUENCY CONTROL, each construction unit
Function and annexation each other it is as follows：
Indoor temperature acquiring unit 21, for obtain air-conditioning current indoor temperature indoors.
Temperature difference acquiring unit 22, for obtaining current indoor temperature and target chamber acquired in indoor temperature acquiring unit 21
The temperature difference between interior temperature, and as the current temperature difference.
Temperature Difference Ratio compared with judging unit 23, make to compare for the current temperature difference that obtains temperature difference acquiring unit 22 and setting value
Compared with, and export comparative result.
Traditional PID arithmetic element 24, for being the current temperature difference compared with the comparative result exported with judging unit 23 in Temperature Difference Ratio
Absolute value be more than setting value when based on the current temperature difference perform Traditional PID computing, obtain and export current operation frequency.In routine
In PID arithmetic, proportionality coefficient, differential coefficient and integral coefficient are not zero.
Unconventional PID arithmetic unit 25, for being current temperature compared with the comparative result exported with judging unit 23 in Temperature Difference Ratio
Zero unconventional PID fortune is when poor absolute value is not more than setting value based on current temperature difference execution proportionality coefficient and differential coefficient
Calculate, obtain and export current operation frequency.
Compressor frequency control unit 26, for controlling the compressor of air-conditioning according to Traditional PID arithmetic element 24 or very
The current operation frequency operation of 25 output of rule PID arithmetic unit.
Each construction unit in above-described embodiment runs corresponding software program, and it is right to realize according to the method for Fig. 1 embodiments
The FREQUENCY CONTROL of air-conditioning, produced technique effect may be referred to the description of Fig. 1 embodiments of the method.
Above example is only illustrating technical scheme, rather than is limited；Although with reference to aforementioned reality
Apply example to be described in detail the present invention, for the person of ordinary skill of the art, still can be to aforementioned enforcement
Technical scheme described in example is modified, or carries out equivalent to which part technical characteristic；And these are changed or replace
Change, do not make the essence of appropriate technical solution depart from the spirit and scope of claimed technical solution of the invention.
Claims (7)
1. a kind of air-conditioning control method for frequency, it is characterised in that methods described includes：
Current indoor temperature and the temperature difference between the current indoor temperature and target indoor temperature are obtained, as the current temperature difference；
The current temperature difference is made comparisons with setting value；
If the absolute value of the current temperature difference is more than the setting value, based on the current temperature difference, Traditional PID computing is performed, obtained
Take current operation frequency；In the Traditional PID computing, proportionality coefficient, differential coefficient and integral coefficient are not zero；
If the absolute value of the current temperature difference is not more than the setting value, based on the current temperature difference, proportionality coefficient and micro- is performed
Divide coefficient to be zero unconventional PID arithmetic, obtain current operation frequency；
The compressor of control air-conditioning is run according to the current operation frequency.
2. method according to claim 1, it is characterised in that the integral coefficient in the unconventional PID arithmetic with it is described
Integral coefficient in Traditional PID computing is equal.
3. method according to claim 1, it is characterised in that the Traditional PID and the unconventional PID are increment type
PID。
4. a kind of air-conditioning frequency control apparatus, it is characterised in that described device includes：
Indoor temperature acquiring unit, for obtain air-conditioning current indoor temperature indoors；
Temperature difference acquiring unit, for obtaining the current indoor temperature and target chamber acquired in the indoor temperature acquiring unit
The temperature difference between interior temperature, and as the current temperature difference；
Temperature Difference Ratio compared with and judging unit, make to compare for the described current temperature difference that obtains the temperature difference acquiring unit and setting value
Compared with, and export comparative result；
Traditional PID arithmetic element, for being the current temperature difference compared with the comparative result exported with judging unit in the Temperature Difference Ratio
Absolute value Traditional PID computing is performed based on the current temperature difference when being more than the setting value, obtain and export current operation frequency
Rate；In the Traditional PID computing, proportionality coefficient, differential coefficient and integral coefficient are not zero；
Unconventional PID arithmetic unit, for being the current temperature compared with the comparative result exported with judging unit in the Temperature Difference Ratio
Proportionality coefficient is performed based on the current temperature difference when poor absolute value is not more than the setting value and differential coefficient be zero it is non-
Traditional PID computing, obtains and exports current operation frequency；
Compressor frequency control unit, for control the compressor of air-conditioning according to the Traditional PID arithmetic element or it is described very
The current operation frequency operation of rule PID arithmetic unit output.
5. device according to claim 4, it is characterised in that the integral coefficient in the unconventional PID arithmetic with it is described
Integral coefficient in Traditional PID computing is equal.
6. device according to claim 4, it is characterised in that the Traditional PID and the unconventional PID are increment type
PID。
7. a kind of air-conditioning, it is characterised in that the air-conditioning includes the air-conditioning frequency any one of the claims 4 to 6
Rate control device.
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|---|---|---|---|
| CN201610909358.5A CN106524395B (en) | 2016-10-19 | 2016-10-19 | Air-conditioning control method for frequency, control device and air-conditioning |
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| CN201610909358.5A CN106524395B (en) | 2016-10-19 | 2016-10-19 | Air-conditioning control method for frequency, control device and air-conditioning |
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| CN106524395B CN106524395B (en) | 2019-04-19 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109520086A (en) * | 2017-09-17 | 2019-03-26 | 黄龙 | Air-conditioning temperature control method |
| CN112648794A (en) * | 2020-12-28 | 2021-04-13 | 中电海康集团有限公司 | Rapid and accurate temperature control method for medical refrigerator and medical refrigerator |
| CN112682903A (en) * | 2020-12-25 | 2021-04-20 | 四川长虹空调有限公司 | Frequency control method for variable-frequency air conditioner compressor |
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| CN106524395B (en) | 2019-04-19 |
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