Unlock instant, AI-driven research and patent intelligence for your innovation.

A Indoor Temperature Dynamic Matrix Predictive Control Method for Central Air Conditioning

A dynamic matrix and predictive control technology, applied in heating and ventilation control systems, heating methods, space heating and ventilation, etc., can solve problems such as poor comfort and energy saving effects

Active Publication Date: 2016-09-14
班贝克(江苏)科技有限公司
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the shortcomings of the existing central air-conditioning room temperature control, such as poor comfort and poor energy-saving effect, the present invention proposes an indoor temperature dynamic matrix predictive control method for central air-conditioning with good comfort and obvious energy-saving effect. By adjusting the fan coil system The frequency of the control room temperature, the dynamic matrix predictive control (abbreviated as DMC) is a type of predictive control based on the step response model

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A Indoor Temperature Dynamic Matrix Predictive Control Method for Central Air Conditioning
  • A Indoor Temperature Dynamic Matrix Predictive Control Method for Central Air Conditioning
  • A Indoor Temperature Dynamic Matrix Predictive Control Method for Central Air Conditioning

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] The present invention will be further described below in conjunction with the accompanying drawings.

[0037] refer to Figure 1 ~ Figure 4 , a kind of indoor temperature dynamic matrix predictive control method of central air conditioner, described dynamic matrix predictive control method comprises the following steps:

[0038] (1) Given a step input to the system, the step input is the frequency of the fan coil unit, record the step response of the indoor temperature a 1 ,a 2 ,...,a N ;

[0039] (2) set up prediction model, described prediction model adopts step response model:

[0040] y m ( k + j ) = a N u ( k + j - N ) + Σ i = ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

An indoor temperature dynamic matrix predictive control method for a central air conditioner includes the following steps of (1) presetting a step input for a system (setting the frequency of a fan coil) and recording step responses a<1>, a<2>...a<N> of indoor temperatures; (2) establishing a prediction model and using a two-layer step response model; (3) performing feedback correction; (4) selecting a reference curve; (5) performing optimizing calculation: using a least square method, and calculating an output increment delta u(k+j) of each step so as to obtain a predicted input value u(k+j) of the next step, wherein the predicted input value u(k+1) is used as the next frequency of a fan coil system. The indoor temperature dynamic matrix predictive control method for the central air conditioner is high in comfort level and obvious in energy-saving effect.

Description

technical field [0001] The invention is applicable to the frequency conversion energy-saving control of a central air-conditioning water system, in particular to a method for controlling the indoor temperature of the central air-conditioning. Background technique [0002] At present, domestic and foreign air conditioners and refrigeration equipment generally use DDC controllers to change the output cooling capacity by adjusting the flow valve (electronic expansion valve), but the actual central air conditioner is always running at the maximum load, so a large part of energy is wasted up. Moreover, the conventional conventional PID control algorithm is commonly used to adjust the flow valve, but due to the time-varying characteristics of the air-conditioning system, the traditional PID control cannot obtain ideal control effects. Coupled with the nonlinear and large lag characteristics of the air conditioning system, it is difficult to simply use traditional PID control. ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F24F11/00
Inventor 董辉李晓宇罗立锋邢科新蒋文成吴祥仲晓帆高阳
Owner 班贝克(江苏)科技有限公司