基于嵌入式Linux地温空调室内风循环智能控制系统设计  

Design of Intelligent Control System of VAV Ground Temperature Air-Conditioning Room Based on Embeded Linux

作　　者：李爱莲[1] 袭祥吉 杨芮[1] 曹博 

机构地区：[1]内蒙古科技大学信息工程学院,内蒙古014010 [2]深圳市元创兴科技有限公司,广东深圳518055

出　　处：《计算机测量与控制》2014年第4期1123-1126,共4页Computer Measurement &Control

基　　金：内蒙古科技大学创新基金项目(2011NCL021);内蒙古自然科学基金资助项目(2012MS0911)

摘　　要：地温中央空调室内风循环系统具有大滞后、非线性及大惯性等特点,采用常规PID控制算法控制效果较差,论文结合常规PID、模糊和智能采样原理设计了地温中央空调室内风循环系统的智能采样模糊PID控制算法,并采用Matlab进行了仿真研究;仿真结果显示,该控制算法能够有效提高系统的动态性能和抵抗干扰能力;论文给出了控制系统的网络化总体设计方案,进行了系统软硬件的具体设计;硬件平台采用ARM9内核的S3C2440片上系统,在嵌入式Linux软件平台下进行温度等信号的采集、与给定信号的比较、以及控制信号的计算输出等工作,通过CAN总线将最终的控制信号传递给末端风机模块,改变送风量,最终实现室内温度控制并达到节能的目的。The central ground temperature air--condition~ s air circulation system is a large time delay, multi--interference, large iner- tia system. It is difficult to obtain an accurate model. Currently conventional PID control algorithm is used the most, but its control effect is poor. Paper designs an intelligent controller which combines fuzzy PID algorithm with intelligent sampling module, and does some simulation researches using Matlab. The results indicates that the intelligent controller＇ s dynamic performance and anti--jamming capability have been greatly improved. And it effectively reduces the effect caused by inaccurate mathematical model to the system. Hardware platform uses S3C2440A system on chip with ARM9 core. Temperature signal acquisition, comparing with the setting signal, and output signal caculating are completed in the embedded Linux software platform. The final output signal is sent to the fan so that changing the amount of air. At last, the temperature is controlled and energy is saved.

关 键 词：嵌入式Linux~地温中央空调 智能采样 模糊PID 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]