Chilled water circuit control method based on fuzzy pid and neural internal model

Abstract

The invention discloses a chilled water loop control method based on fuzzy PID and neural internal model. After the air conditioner collects the chilled water outlet temperature, the compressor is controlled in real time through the method. The compressor is the controlled object in the chilled water loop. The method includes the following steps: (1), setting the target value of the controlled object; (2), the fuzzy PID controller and the neural network estimator together form an internal model control; (3), the controlled object passes through the neural network estimator The training makes it an ideal controlled object model; (4) Adjust the deviation through the fuzzy PID controller, and finally realize the adaptive control of the chilled water circuit of the variable air volume air conditioning system, and realize the stable output of the controlled object. The invention combines the fuzzy PID with the neural internal model control, can overcome the characteristics of nonlinearity and time variation in the chilled water circuit, and realize the purpose of accurate and rapid control.

Description

Technical field [0001] The invention relates to a frozen water circuit control method based on fuzzy PID and neural internal model, belonging to the technical field of variable air volume air conditioning. Background technique [0002] Since the 1960s, VAV air-conditioning systems were born in the United States. Because of their energy-saving and comfortable features, they have been widely used in various work and living places. However, due to the intensification of the energy crisis, people have become more and more aware of the need for energy saving. . As the VAV air-conditioning system, which occupies a major position in building energy consumption, naturally, because it has attracted the attention of many scholars, the ultimate goal of the VAV system is to make the temperature and humidity in the room meet people's requirements, so how to meet people's comfort requirements The realization of energy-saving control of the air-conditioning system has become a hot topic in the...

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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