Method and system for removing steady state errors of central air-conditioning temperature control system

A technology of temperature control system and central air-conditioning, applied in heating and ventilation control system, control input related to air characteristics, space heating and ventilation control input, etc. The solution of the problem, to achieve the effect of reducing the steady state error and eliminating the steady state error

Active Publication Date: 2015-07-01
SHENZHEN DAS INTELLITECH CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

The situation that the central air-conditioning temperature control system always has steady-state errors has not been effectively resolved

Method used

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  • Method and system for removing steady state errors of central air-conditioning temperature control system
  • Method and system for removing steady state errors of central air-conditioning temperature control system
  • Method and system for removing steady state errors of central air-conditioning temperature control system

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Embodiment Construction

[0030] Such as figure 1 as shown, figure 1 Schematic diagram of the system principle for eliminating the steady-state error of the central air-conditioning temperature control system, the central air-conditioning temperature control system includes a central air-conditioning temperature control system 1, and the central air-conditioning temperature control system 1 includes a temperature setting module 11, a temperature controller 12, a temperature sensor 13, Cooling / heating module 14.

[0031] The temperature setting module 11 is used to set and output the expected temperature data output by the central air-conditioning temperature control system 1 .

[0032] The temperature sensor 13 is used to collect and output indoor temperature data.

[0033] The temperature controller 12 is connected with the temperature setting module 11 and the temperature sensor 13, and is used to receive the expected temperature data output by the temperature setting module 11 and the indoor tempe...

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Abstract

The invention relates to a method and system for removing steady state errors of a central air-conditioning temperature control system. The method includes the following steps that a temperature controller of the central air-conditioning temperature control system calculates and outputs the temperature data T1 of cold/hot gas according to the formula of T1=T2+[-2k(t-t0*n)/3+X2/3]3/2 and controls a refrigerating/heating module to output the cold/hot gas corresponding to the temperature data T1, wherein X is the initial temperature difference between first indoor temperature data and expected temperature data, T1 and T2 are the temperature data of the output cold/hot gas and the indoor temperature data at the current moment respectively, t is the time interval between the current moment and the initial moment, t0 is the time interval from the time after the cold/hot gas is output to the time when second indoor temperature data are collected at the next time, n is the frequency for collecting the second indoor temperature data, and k meets the condition that k is larger than zero and is smaller than or equal to 30; when (t-t0*n) is smaller than first preset time, the above processes are executed repeatedly until (t-t0*n) is larger than or equal to the first preset time, and the range of the first preset time meets the formula of (3X2/3/2k)-0.01S-(3X2/3/2k)+0.01s. By the adoption of the method and system, the steady state errors can be removed in limited time.

Description

technical field [0001] The invention relates to a central air-conditioning temperature control system, more specifically, to a method and system for eliminating steady-state errors of the central air-conditioning temperature control system. Background technique [0002] The central air-conditioning temperature control system is an important part of the subway operation system. The energy consumption of the ventilation and air-conditioning system accounts for about 40%-60% of the total energy consumption of subway buildings. Therefore, the energy saving and consumption reduction of the ventilation and air conditioning system has a positive impact on reducing operating costs and improving the green image of the subway. The situation that the central air-conditioning temperature control system always has a steady-state error has not been effectively resolved. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a method...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/00F24F11/02
CPCF24F11/30F24F11/62F24F11/64F24F11/83F24F2110/10
Inventor 蔡伟周魏伟杨广禄胡阳
Owner SHENZHEN DAS INTELLITECH CO LTD
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