CN109407717A - A kind of temperature controller based on Adaptive Fuzzy PID - Google Patents
A kind of temperature controller based on Adaptive Fuzzy PID Download PDFInfo
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- CN109407717A CN109407717A CN201811105246.XA CN201811105246A CN109407717A CN 109407717 A CN109407717 A CN 109407717A CN 201811105246 A CN201811105246 A CN 201811105246A CN 109407717 A CN109407717 A CN 109407717A
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- temperature
- control
- central processing
- fuzzy
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/1917—Control of temperature characterised by the use of electric means using digital means
Abstract
The invention discloses a kind of temperature controllers based on Adaptive Fuzzy PID, including control system, central processing unit, display system, execution system and detection system.Central processor core is provided with fuzzy-adaptation PID control program, and fuzzy decision table is stored in the flash memory of central processor core.Target temperature is inputted from control system.Program operation, after temperature sensor acquires real time temperature, temperature information is passed in central processor core by converter, central processing unit is according to the deviation of real time temperature and target temperature, control amount is obtained by inquiry fuzzy decision table, controls the turn-on time of solid-state relay.To control refrigeration and heating system, temperature control is realized.The present invention uses adaptive Fuzzy PID Control temperature, has real-time control effect, is able to satisfy in industrial production demand fast to temperature control requirement speed, with high accuracy.
Description
Technical field
The present invention relates to domain of control temperature, in particular to a kind of temperature control equipment.
Technical background
Temperature control all plays very important effect either in industrial processes or in daily life.Permitted
More field of industrial production, in Chemical Manufacture, industrial manufacturing industry, automobile production, food processing, metallurgy manufacture, to temperature
Control will directly influence the quality and service life of product.Temperature control is carried out usually using thermistor both at home and abroad,
But since temperature has the characteristics that non-linear strong, time-varying and time lag, coupling are strong, so that being controlled only with thermistor
Temperature effect achieved processed is slow, and precision is low.Much it is not enough to the work high used in some pairs of temperature control precisions and rate request
In industry production.
Summary of the invention
In view of this, for overcome the deficiencies in the prior art, the present invention provides that a kind of stability is good, control precision is high, rings
Answer the fireballing temperature controller based on fuzzy.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of temperature controller based on Adaptive Fuzzy PID, comprising: control system, central processing unit, display system, execution
System and detection system.It is characterized in that being provided with fuzzy-adaptation PID control program, fuzzy decision table in the central processor core
It is stored in the flash memory of the central processor core.Solid-state in the central processing unit and the execution system after
Appliance circuit is connected, and the solid-state relay circuit is connected with the heating with refrigeration system circuitry.The detection system
In contain temperature sensor and converter, temperature sensor acquisition Current Temperatures information is through the converter by temperature
Information is converted to electric signal and is input in the central processing unit, it is contemplated that host computer terminal of the target temperature from the control system
Input.Program operation, the central processing unit are taken according to the deviation of target temperature and temperature collection by inquiring fuzzy decision table
Control amount is obtained, the turn-on time of the solid-state relay circuit is controlled, realizes to the control of the heating and refrigeration system, reaches
Control the effect of temperature.The display system shows Current Temperatures, the working station indicator display heating or refrigerating state.
Optionally, temperature sensor is arranged in industrial production region to be measured, and the bidirectional triode thyristor circuit is set with production
Standby heating is connected with refrigeration system.
Optionally, the model AT89C51 of central processor core.
Optionally, fuzzy control rule program is provided in central processor core.
Optionally, temperature sensor model DS18B20, the temperature indicator model LCD1602.
Compared with prior art, the beneficial effects of the present invention are: the present invention passes through temperature sensor temperature collection information,
The deviation of real time temperature and target temperature is analyzed by fuzzy rule through central processing unit, to predict temperature change,
And control instruction is assigned by fuzzy reasoning and PID system.Adaptive Fuzzy PID Control system can be in control process to not true
Fixed condition, parameter, delay are monitored analysis, the online self-tuning of pid parameter are realized using the method for fuzzy reasoning, not only
The advantages that traditional PID control system principle is simple, easy to use, robustness is stronger is only remained, and control can in real time
To reduce the time lag of temperature change, expected temperature control effect can be rapidly achieved.Controlling precision simultaneously can also greatly improve,
Stability is also good compared with the prior art.It is high to be able to satisfy some pairs of temperature control precision requirements, the fast industrial production demand of rate request.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
Fig. 2 is the working principle diagram of adaptive fuzzy controller of the invention.
Specific embodiment
Below in conjunction with attached drawing of the invention, technical solution of the present invention is purged, is completely described.Based on this hair
Embodiment in bright, those of ordinary skill in the art's every other reality obtained without making creative work
Example is applied, shall fall within the protection scope of the present invention.
As shown in Figure 1, the present invention includes control system, central processing unit, execution system, detection system and display system.
It include numeric keypad circuit and reset key in control system, target temperature is input to centre by keyboard by controllers
It manages in device.Fuzzy adaptivecontroller program is provided in central processor core AT89C51.Fuzzy decision table is stored in
In the flash memory of AT89C51.Detection system includes several groups temperature sensor and converter, several groups temperature sensing
Device will be arranged in region to be measured in the industrial production, and by reset key by after system reset, program starts to transport controllers
Row, at every fixed time, temperature sensor acquire real time temperature data, and temperature data is transformed into electric signal through converter
It is input in central processing unit.Central processing unit compares the temperature data collected with target temperature, obtains corresponding
Temperature error and error rate, control amount is then obtained by the fuzzy decision table set in program, then be calculated
Output quantity is controlled, to control the conducting and shutdown of solid-state relay.The heating of solid-state relay and production and refrigeration system electricity
Road is connected, and the conducting and turn-off time for controlling solid-state relay can directly control refrigeration and heating system, to reach stable control
Requirement of the temperature processed in given value.
In order to guarantee control efficiency, in temperature much miss the mark temperature, heated up using total power, in real time temperature
Adaptive Fuzzy Control is used again when close to target temperature, and for the sake of controlling precision, the present apparatus existsShi Caiyong
Fuzzy control.
As shown in Fig. 2, the working principle of adaptive fuzzy controller is technical staff in advance according to controlled temperature change
Fuzzy rule is arranged in characteristic and control characteristic, and is converted into Fuzzy Decision Control table and is input in central processor core.
System passes through temperature deviationAnd change of error, three parameters of Control PID system are exported by fuzzy rule、、, and then Control PID system exports real-time control amount, achievees the effect that real time temperature controls.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (5)
1. a kind of temperature controller based on Adaptive Fuzzy PID, comprising: control system (1), central processing unit (2), display system
It unites (3), execute system (4) and detection system (5).It is characterized in that being provided with fuzzy in the central processor core (2)
Program is controlled, fuzzy decision table is stored in the flash memory (8) of the central processor core.The central processing unit
(2) it is connected with the solid-state relay circuit (11) in the execution system, the solid-state relay circuit (11) and the heating
It is connected with refrigeration system circuitry (12).Contain temperature sensor (14) and converter (13) in the detection system (5),
It is defeated that temperature information through the converter (13) is converted to electric signal by the temperature sensor (14) acquisition Current Temperatures information
Enter in the central processing unit (2), it is contemplated that target temperature is inputted from the host computer terminal (7) of the control system.Program fortune
Row, the central processing unit (2) obtain control by inquiry fuzzy decision table according to the deviation of target temperature and temperature collection
Amount controls the turn-on time of the solid-state relay circuit (11), realizes to the control of the heating and refrigeration system (12), reaches
To the effect of control temperature.The display system (3) shows Current Temperatures, working station indicator (10) the display heating or
Refrigerating state.
2. the temperature controller according to claim 1 based on Adaptive Fuzzy PID, it is characterised in that the temperature sensing
Device (14) setting is producing place to be measured.
3. the temperature controller according to claim 1 based on Adaptive Fuzzy PID, it is characterised in that the central processing
The model AT89C51 of device chip (2).
4. the temperature controller according to claim 1 based on Adaptive Fuzzy PID, it is characterised in that the central processing
Device chip is provided with adaptive Fuzzy PID Control program in (2).
5. the temperature controller according to claim 1 based on Adaptive Fuzzy PID, it is characterised in that the temperature sensing
Device (14) model DS18B20, temperature indicator (9) the model LCD1602.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811105246.XA CN109407717A (en) | 2018-09-21 | 2018-09-21 | A kind of temperature controller based on Adaptive Fuzzy PID |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811105246.XA CN109407717A (en) | 2018-09-21 | 2018-09-21 | A kind of temperature controller based on Adaptive Fuzzy PID |
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| CN109407717A true CN109407717A (en) | 2019-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811105246.XA Pending CN109407717A (en) | 2018-09-21 | 2018-09-21 | A kind of temperature controller based on Adaptive Fuzzy PID |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110442164A (en) * | 2019-08-19 | 2019-11-12 | 深圳市思榕科技有限公司 | A kind of stationary temperature heating chill surface control method |
| CN110471474A (en) * | 2019-08-13 | 2019-11-19 | 安徽科技学院 | A kind of temperature and humidity intelligent control system of power distribution cabinet |
| CN110597322A (en) * | 2019-10-31 | 2019-12-20 | 国网黑龙江省电力有限公司电力科学研究院 | Heating control system and method for heat tracing band based on fuzzy PID algorithm |
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| CN204883431U (en) * | 2015-08-13 | 2015-12-16 | 湖南城市学院 | Biochemical analysis appearance electronic control system |
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| CN201364507Y (en) * | 2009-03-16 | 2009-12-16 | 深圳市华海诚信电子显示技术有限公司 | Constant temperature control system |
| CN101876833A (en) * | 2010-06-25 | 2010-11-03 | 电子科技大学 | Intelligent temperature control method for array light receiving/transmitting module in optical switch |
| CN204883431U (en) * | 2015-08-13 | 2015-12-16 | 湖南城市学院 | Biochemical analysis appearance electronic control system |
| CN207251669U (en) * | 2016-12-15 | 2018-04-17 | 哈尔滨理工大学 | Temperature-control Monitoring system is realized in a kind of SCM Based network control |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110471474A (en) * | 2019-08-13 | 2019-11-19 | 安徽科技学院 | A kind of temperature and humidity intelligent control system of power distribution cabinet |
| CN110442164A (en) * | 2019-08-19 | 2019-11-12 | 深圳市思榕科技有限公司 | A kind of stationary temperature heating chill surface control method |
| CN110597322A (en) * | 2019-10-31 | 2019-12-20 | 国网黑龙江省电力有限公司电力科学研究院 | Heating control system and method for heat tracing band based on fuzzy PID algorithm |
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Application publication date: 20190301 |