Self-abstracting-rule fuzzy control simulation of a real environment chamber system
环境试验室热工系统规则自提取模糊控制仿真

This paper discusses the transfer-function modeling of the thermal processes and the self-organizing fuzzy control for the indoor-air temperature control, the supply-air system control and the hot-water system control in a multivariable real environment-chamber system with multi-parameters and large time delays and nonlinearities. Firstly, a self-abstracting-rule fuzzy control(SARFC) method is presented. Then, based on the experimental data from each controlled loop, the involved transfer functions are identified. Third, by properly selecting the order for each transfer function through comparison, we obtained a set of desired transfer functions. Finally, by means of SARFC method, simulations are carried out for the fuzzy control of the supply-air system and the hot-water system in the real environment-chamber. Results show that SARFC method gives satisfactory control characteristics for those systems. The transfer functions and the control-simulation investigations provide a theoretical basis for further experimental study on fuzzy control for the artificial environment chamber system.