基于MATLAB的空调房间温控系统的仿真研究

针对空调房间温度的非线性变化纯滞后惯性大等突出问题，建立了一个空调室温控制模型。根据这一模型提出了一种模糊Smith—PID最优控制策略，使用MATLAB对空调房间温度的模型失配时鲁棒特性、抗干扰特性、动态特性等进行仿真研究。结果表明：模糊Smith—PID控制效果均优于常规PID和传统Smith-PID控制，响应快、抗干扰性强、鲁棒性好，并能使房间温度控制在给定温度±0．1℃附近，超调几乎为零，是一种实用而简便的控制方法。

Simulation of Air-conditioned Room Temperature Control System Based on MATLAB

In order to deal with some serious problems of air-conditioned room temperature such as a great non-linear variation and a high Time Delay Inertial system, an air-conditioned room temperature control model is built. Based on the model, a fuzzy Smith-PID optimal control policy is put forward. MATLAB is used to simulate the robust characteristics when the air-conditioned room temperature model is in mismatch ,anti-interference ability and dynamic characteristics. The results indicate that fuzzy Smith-PID has better controlling effect than conventional PID and traditional Smith - PID in faster dynamic response, stronger anti-interference ability and better robust characteristics. It also controls the room temperature on the verge of a given temperature ±0. 1℃. The overshoot is almost zero. This control Method turns out to be very practical and convenient.