环境试验室热工系统规则自提取模糊控制仿真

以某环境试验室室内温度、送风系统和热水系统多回路在线控制为背景, 针对其存在的多参数、大滞后、非线性等控制难题, 讨论了各个回路热工特性传递函数建立和自组织模糊控制仿真问题. 首先, 提出了规则自提取模糊控制(self-abstracting rules fuzzy control, SARFC)方法. 然后, 根据各被控回路的动态热工特性和参数辨识要求, 试验研究了各回路的动态响应特性, 完成了各回路传递函数模型参数的辨识, 得到了各回路的传递函数模型. 最后, 采用SARFC方法, 仿真研究了基于送风系统调节和热水系统调节的环境试验室温度模糊控制仿真, 得到了较好的控制仿真效果, 为进一步试验研究环境试验室热工系统模糊控制提供了理论基础.

Self-abstracting-rule fuzzy control simulation of a real environment chamber system

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.