LED照明闭环控制实验系统研究  

Study on LED lighting closed loop control experimental system

作　　者：黄丹[1] 罗文广[1] 陈文辉[1] 蓝红莉[1] 

机构地区：[1]广西科技大学电气与信息工程学院,广西柳州545006

出　　处：《实验技术与管理》2016年第8期82-86,共5页Experimental Technology and Management

基　　金：新世纪广西高等教育教学改革工程项目"地方高校电气信息类专业研究性教学的研究与实践"(2013JGA193)

摘　　要：为了满足计算机控制技术课程的研究性教学需求,应用PID算法设计了LED照明闭环控制实验系统。以STC89c52单片机、PCF8591芯片为核心设计LED照明系统的硬件电路,利用Matlab对光通量与占空比、光通量与AD转化后的数字量进行拟合,结合PID算法稳态误差小的特点,实现LED照明在线实时控制,补偿日照不足并且提高光照稳定性。应用表明,该实验系统使学生获得了综合训练,学生实践能力和科学素养获得提高,取得了良好教学效果。In order to meet the needs of research-oriented teaching in Computer Control Technology course,this article puts forward the application of PID algorithm in designing the closed-loop control system of LED lighting,including designing the LED lighting hardware circuit system with STC89C52 microcontroller,PCF8591 chip,fitting lumens and duty ratio,lumens and the digital quantity after AD transformation with Matlab.This article also gives the characteristics of small steady-state error of the PID algorithm,realizes the function of online real-time control to the LED lighting,compensates the lack of sunshine and improves stability of illumination.With the application of the experimental system,students can get the comprehensive training combined with theory and practice,improve their practical ability and scientific literacy,and achieve good results teaching.

关 键 词：计算机控制 LED照明系统 PID算法 实验教学 

分 类 号：G484[文化科学—教育学] TP273[文化科学—教育技术学]