Heat exchanger temperature fuzzy control method and system based on 2D model

Abstract

The invention provides a heat exchanger temperature fuzzy control method and system based on a 2D model. The method comprises the steps: establishing a dynamic evolution model of a heat exchanger temperature control system; representing the dynamic characteristics of the original controlled system by using a T-S fuzzy 2D system; measuring an output signal of the system, designing a fuzzy fixed-order output feedback controller, and giving a parameterization design method of the fuzzy controller in a unified convex optimization framework by utilizing a system augmentation technology. According to the method, the heat exchanger temperature control system is described based on the 2D dynamic model, and the evolution characteristics of the system state in time and space can be better reflected.Fuzzy fixed-order output feedback controller is designed. A fuzzy fixed-order output feedback controller can effectively control the heat exchanger system only by using the output signal of the system, improves the robust anti-interference performance of the system, and effectively expands the application range of the fuzzy fixed-order output feedback controller.

Description

technical field [0001] The invention relates to the technical field of heat exchanger temperature control, in particular to a 2D model-based heat exchanger temperature fuzzy control method and system. Background technique [0002] my country's heating industry generally faces two major practical problems, that is, the quality of heating at the user end is not good, and there is a huge waste of heat energy in heating companies. With the rise of artificial intelligence technology, the heating system is moving from an extensive decentralized heating model to a smart centralized heating model. The heat exchanger temperature control system is a typical convection heat transfer and heat conduction heating system unit, which has the advantages of good energy saving effect and wide application range. The traditional research on the temperature control method of the heat exchanger is based on the 1-dimensional (One-dimensional 1D) model, which does not consider the dynamic evolution...

AI Technical Summary

Problems solved by technology

But this invention has the following two problems: 1) This invention only considers the heat supply problem of the heat exchanger from the time dimension, and does not consider the transfer characteristics of the thermodynamic process of the heat exchanger on the space dimension

2) The parameter adjustment of the PID controller proposed by this invention is mainly based on manual experience, and lacks a systematic controller design method

But there are following two problems in this method: 1) this invention lacks heating temperature measurement system and control system, under the situation that user has clear requirement to temperature, this method is not applicable

2) The invention lacks the ability to resist the influence of outdoor temperature changes on indoor temperature

Images