Chilled water loop control method based on fuzzy PID and neural internal model

Abstract

The invention discloses a chilled water loop control method based on a fuzzy PID and a neural internal model. An air conditioner performs real-time control over a compressor through the method after collecting the water outlet temperature of chilled water, wherein the compressor is a controlled object in a chilled water loop. The method includes the steps that step1, a target value of the controlled object is set; step2, a fuzzy PID controller and a neural network estimator together form internal model control; step3, the controlled object is trained through the neural network estimator to be a controlled object model in an ideal state; step4, deviation is adjusted through the fuzzy PID controller, finally, self-adaptation control over the chilled water loop of a variable-air-volume air conditioner system is achieved, and stable output of the controlled object is achieved. The fuzzy PID and the neural internal model control are combined, the defects of nonlinearity and time varying in the chilled water loop can be overcome, and accurate and rapid control is achieved.

Description

technical field [0001] The invention relates to a chilled water circuit control method based on fuzzy PID and neural internal model, and belongs to the technical field of variable air volume air conditioners. Background technique [0002] Since the 1960s, the variable air volume air conditioning system was born in the United States, and it has been widely used in various working and living places due to its energy saving and comfort features. However, due to the aggravation of the energy crisis, people are increasingly aware of the necessity of energy saving . As the variable air volume air-conditioning system that occupies a major position in building energy consumption, it has naturally attracted the attention of many scholars. The ultimate goal of the variable air volume air-conditioning system is to make the temperature and humidity in the room meet people's requirements. Realizing the energy-saving control of the air-conditioning system under the premise has become a h...

AI Technical Summary

Problems solved by technology

Therefore, the outlet temperature of the chilled water after passing through the evaporator is particularly important in the variable air volume air conditioning system. However, due to the nonlinear and time-varying characteristics of the chilled water circuit, the conventional control method cannot achieve a good control effect.

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