CN106152431A - Central air-conditioning adaptive PID Control - Google Patents
Central air-conditioning adaptive PID Control Download PDFInfo
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- CN106152431A CN106152431A CN201510194266.9A CN201510194266A CN106152431A CN 106152431 A CN106152431 A CN 106152431A CN 201510194266 A CN201510194266 A CN 201510194266A CN 106152431 A CN106152431 A CN 106152431A
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Abstract
The invention belongs to technical field of central air, particularly relate to central air-conditioning adaptive PID Control, PID controller volume structure is little, weight about 300 grams, the volume that takes up room is little, it is possible to integrated with converter and fan coil form a complete production network, and reduces low central air-conditioning cost.Conventional central air-conditioning guest room temperature controller separates with fan coil, although temperature controller is inexpensive, but its function is small and weak, it is impossible to accurately control guest room temperature, but extensive style controls, waste the energy, on the other hand, fan coil is the most complete, and price is higher, compares average price of the present invention higher.
Description
Technical field
The invention belongs to technical field of central air, particularly relate to central air-conditioning adaptive PID Control.
Background technology
Central air conditioner system is made up of cold and heat source system and air handling system.The principle using vaporizing liquid refrigeration provides institute's chilling requirement for air handling system, in order to offset the refrigeration duty of indoor environment；Heating provides in order to the heat offsetting indoor environment thermic load for air handling system.Refrigeration system is the vital part of central air conditioner system, its use kind, the method for operation, version etc. directly affects economy that central air conditioner system is in operation, high efficiency, reasonability.
PID controller is feedback circuit parts common in Industry Control Application, it is made up of proportional unit P, integral unit I and differentiation element D, its input e (t) is that in u (t)=kp [e (t)+1/TI ∫ e (t) dt+TD*de (t)/dt] formula, the bound of integration is 0 and t respectively with the relation of output u (t), its transmission function is: G (s)=U (s)/E (s)=kp [1+1/ (TI*s)+TD*s], wherein kp is proportionality coefficient；TI is integration time constant；TD is derivative time constant.
At present, central air-conditioning great majority on the market use PLC control system (PLC control system: Programmable Logic Controller, programmable logic controller (PLC), the electronic system of a kind of digital operation, aim at and design in industrial environment application.It uses a class programmable memory, for its internally stored program, perform logical operations, sequential control, regularly, the user oriented instructions such as counting and arithmetical operation, and control various types of machineries or production process by numeral or analog pattern input/output), its structure is divided into Sensor section, controller part and executor's part, its operation principle is, the temperature sensor in controlled space is transformed into the signal of telecommunication temperature signal and passes to PLC, PLC passes to executor performing signal, such as blower fan or electrodynamic valve, change the temperature in controlled space.But PLC control system also exists following shortcoming: PLC itself is Flexible Production on be pilot production line, fast and easy reprogramming, but for being controlled as central air-conditioning this control large time delay, nonlinear system, often temperature-humidity signal controls to reach predetermined value, or degree of accuracy is the highest.
Summary of the invention
In order to solve above-mentioned technical problem, the present invention provides a kind of central air-conditioning adaptive PID Control, the shortcoming that can not reach predetermined value, degree of accuracy is the highest to solve existing PLC control system temperature-humidity signal to control.
Central air-conditioning adaptive PID Control, it is characterized in that including: epidemic disaster harvester, pid algorithm control module, humidifier module, frequency transformer control module, host computer communication module, humiture setting value module, described pid algorithm control module carries out PID according to the current epidemic disaster value that epidemic disaster setting value and Temperature Humidity Sensor collection are returned and controls to resolve, obtain humidifier humid control amount and the spin rate control quantity of axial flow blower, control epidemic disaster and the air quantity of passage of central air conditioner, so that the epidemic disaster in controlled space reaches setting value.
Preferably, the analogue signal that Temperature Humidity Sensor is gathered by described pid control algorithm module, it is converted into digital signal, in single-chip microcomputer by analysis, calculate, humidifier and converter is flowed to respectively performing signal, live signal is uploaded to host computer simultaneously, preserves, for system identification and control parameter determination.
The invention have the benefit that the present invention uses intelligent PID control system that variable air volume central air-conditioner is carried out humiture Self Adaptive Control, first control system carries out Model Distinguish to multivariate signal input and output, then it is integrated process pid parameter according to the model picked out to control so that it is reach exact value.When humiture actual value differs bigger with setting value, control system sends instruction, supply frequency or valve to executor's (converter or electrodynamic valve) and reaches maximum；When actual value and setting value close to time, when arriving preset range, controller issues instructions to executor, progressively reduces response, the error between actual value and setting value is made to be maintained in certain scope, so can lower power consumption, reduce energy consumption, PID controller volume structure is little, weight about 300 grams, the volume that takes up room is little, it is possible to integrated with converter and fan coil form a complete production network, and reduces low central air-conditioning cost.Conventional central air-conditioning guest room temperature controller separates with fan coil, although temperature controller is inexpensive, but its function is small and weak, it is impossible to accurately control guest room temperature, but extensive style controls, waste the energy, on the other hand, fan coil is the most complete, and price is higher, compares average price of the present invention higher.
Accompanying drawing explanation
Fig. 1 control system of the present invention overall design drawing；
Fig. 2 is the control system hardware architecture diagram of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described further；
Embodiment:
As shown in accompanying drawing 1, Fig. 2
The present invention provides a kind of central air-conditioning adaptive PID Control, including: epidemic disaster harvester, pid algorithm control module, humidifier module, frequency transformer control module, host computer communication module, humiture setting value module.
The analogue signal that Temperature Humidity Sensor is gathered by pid control algorithm module, it is converted into digital signal, in single-chip microcomputer by analysis, calculate, humidifier and converter is flowed to respectively performing signal, live signal is uploaded to host computer simultaneously, preserve, for system identification and control parameter determination.
Pid algorithm control module carries out PID according to the current epidemic disaster value that epidemic disaster setting value and Temperature Humidity Sensor collection are returned and controls to resolve, obtain humidifier humid control amount and the spin rate control quantity of axial flow blower, control epidemic disaster and the air quantity of passage of central air conditioner, so that the epidemic disaster in controlled space reaches setting value.
Utilize technical solutions according to the invention, or those skilled in the art is under the inspiration of technical solution of the present invention, design similar technical scheme, and reach above-mentioned technique effect, all fall into protection scope of the present invention.
Claims (2)
1. central air-conditioning adaptive PID Control, it is characterized in that including: epidemic disaster harvester, pid algorithm control module, humidifier module, frequency transformer control module, host computer communication module, humiture setting value module, described pid algorithm control module carries out PID according to the current epidemic disaster value that epidemic disaster setting value and Temperature Humidity Sensor collection are returned and controls to resolve, obtain humidifier humid control amount and the spin rate control quantity of axial flow blower, control epidemic disaster and the air quantity of passage of central air conditioner, so that the epidemic disaster in controlled space reaches setting value.
Central air-conditioning adaptive PID Control the most according to claim 1, it is characterized in that the analogue signal that Temperature Humidity Sensor is gathered by described pid control algorithm module, it is converted into digital signal, in single-chip microcomputer by analysis, calculate, humidifier and converter is flowed to respectively performing signal, live signal is uploaded to host computer simultaneously, preserves, for system identification and control parameter determination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510194266.9A CN106152431A (en) | 2015-04-22 | 2015-04-22 | Central air-conditioning adaptive PID Control |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510194266.9A CN106152431A (en) | 2015-04-22 | 2015-04-22 | Central air-conditioning adaptive PID Control |
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| CN106152431A true CN106152431A (en) | 2016-11-23 |
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| CN201510194266.9A Pending CN106152431A (en) | 2015-04-22 | 2015-04-22 | Central air-conditioning adaptive PID Control |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108162723A (en) * | 2016-12-07 | 2018-06-15 | 中达电子零组件(吴江)有限公司 | A kind of air conditioner for electric motor coach system and its frequency converter |
| CN109375499A (en) * | 2018-08-29 | 2019-02-22 | 江苏坚诺机电测试技术有限公司 | PID closed-loop control system and its control method |
| CN111059690A (en) * | 2019-11-04 | 2020-04-24 | 珠海格力电器股份有限公司 | Internal model decoupling control method and control system of variable air volume air conditioner |
| CN112066529A (en) * | 2020-08-12 | 2020-12-11 | 正大食品企业（秦皇岛）有限公司 | PID frequency conversion intelligent control air volume adjusting method for air handling unit |
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| JP4177600B2 (en) * | 2002-05-22 | 2008-11-05 | 株式会社山武 | Air conditioning control method and air conditioning control device |
| CN101424436A (en) * | 2008-11-29 | 2009-05-06 | 深圳市奥宇控制系统有限公司 | Intelligent optimizing control system and method for central air-conditioning |
| CN202119050U (en) * | 2011-06-23 | 2012-01-18 | 长春工业大学 | Self-adaptive energy-saving control system of air conditioner of computer room |
| CN202709380U (en) * | 2012-07-06 | 2013-01-30 | 郑州宇通客车股份有限公司 | Bus intelligent air-conditioner control system |
| CN203396032U (en) * | 2013-06-19 | 2014-01-15 | 河海大学常州校区 | Room temperature control device based on fuzzy self-adaption PID (proportion integration differentiation) |
| CN103574829A (en) * | 2012-07-18 | 2014-02-12 | 同方泰德国际科技(北京)有限公司 | Energy saving control method for air conditioning unit |
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2015
- 2015-04-22 CN CN201510194266.9A patent/CN106152431A/en active Pending
Patent Citations (6)
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| JP4177600B2 (en) * | 2002-05-22 | 2008-11-05 | 株式会社山武 | Air conditioning control method and air conditioning control device |
| CN101424436A (en) * | 2008-11-29 | 2009-05-06 | 深圳市奥宇控制系统有限公司 | Intelligent optimizing control system and method for central air-conditioning |
| CN202119050U (en) * | 2011-06-23 | 2012-01-18 | 长春工业大学 | Self-adaptive energy-saving control system of air conditioner of computer room |
| CN202709380U (en) * | 2012-07-06 | 2013-01-30 | 郑州宇通客车股份有限公司 | Bus intelligent air-conditioner control system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108162723A (en) * | 2016-12-07 | 2018-06-15 | 中达电子零组件(吴江)有限公司 | A kind of air conditioner for electric motor coach system and its frequency converter |
| CN109375499A (en) * | 2018-08-29 | 2019-02-22 | 江苏坚诺机电测试技术有限公司 | PID closed-loop control system and its control method |
| CN111059690A (en) * | 2019-11-04 | 2020-04-24 | 珠海格力电器股份有限公司 | Internal model decoupling control method and control system of variable air volume air conditioner |
| CN112066529A (en) * | 2020-08-12 | 2020-12-11 | 正大食品企业（秦皇岛）有限公司 | PID frequency conversion intelligent control air volume adjusting method for air handling unit |
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Application publication date: 20161123 |