Experiment of transfer function model of an environment chamber thermodynamic system

Discusses the problems of modeling thermal performance transfer functions of the environment chamber thermodynamic system, which is a multi-variable, large time-delay and nonlinear system. Derives the differential equations and corresponding transfer functions of the controlled loops based on their thermodynamic performance. For the demands of parameter identification of the transfer functions, studies the dynamic responding performance of the controlled loops and obtains the time sequence experimental data. Based on the experimental data, executes the parameter identification of the transfer functions of the loops, compares and analyses the orders of the transfer functions, and gains a set of satisfied transfer functions using the least square method. And implements the fuzzy control simulation on the temperature of the environment chamber based on the adjustment of supply air system and hot water system using the method of self-abstracting rule fuzzy control (SARFC) and achieves satisfied control effect, providing a theoretic basis for further study on fuzzy control performance of environment chamber thermodynamic systems.