Study on Color Matching and Control of Tri-chromatic LEDs

照明质量和水平已成为人类社会现代化程度的重要标志之一，随着社会文明的进步，照明设计已逐渐突破了传统仅以照度、均匀度为设计目标，更多强调的是照明光环境对人的生理、心理的影响。传统光源很难实现色温和场景的动态控制，而三基色LED光源最大的特点是具有丰富的色域，正好满足人们对高质量照明的要求。三基色LED可以根据不同要求，通过改变三种基色光的配比，实现色温和照明场景的灵活变幻，设计出不同效果的照明环境。 本文针对三基色LED光色进行研究，主要探讨三基色LED光色设计、配色实现和稳定控制三部分内容。论文中简要提出了和谐照明的概念，为照明工程的设计和评测提供新思维；研究三基色LED光色设计，将专家系统...Lighting quality and level of modernization of human society have become important symbols of social civilization and progress. The illumination design has gradually broken through the traditional goals of illumination and uniformity, more emphases are put on the environmental illumination effects on human physiology and psychology. Conventional light sources are difficult to achieve dynamic contr...学位：工学硕士院系专业：物理与机电工程学院机电工程系_机械设计及理论学号：1992007115117

Color Matching of RGB-LEDs Based on Dichotomy

研究如何快速、精确地匹配三基色rgb的比例得到任意颜色的光具有重要意义.提出一种结构简单易于实现的rgb-lEdS配色模型,通过振幅调制电流来改变三基色lEd辐射功率,从而调节各基色在混合色中的亮度比例,使得rgb-lEdS能够匹配到任意颜色.同时给出使用该模型进行配色的精确度评价指标.在此模型基础上提出一种基于二分法的rgb配色算法,使得混合颜色的色品坐标能够快速、精确地匹配到指定范围.仿真实验证明了算法的正确性和有效性.该算法收敛速度快,配色精确度高,具有很高的实用价值.The way to match the ratio of RGB trichromatic lights to get arbitrary color of light quickly and accurately is of great significance.An easily realizable RGB-LEDs color matching model with simple structure was proposed.An arbitrary color can be matched by changing trichromatic LED radiation power in the way of current amplitude modulation,which in turn adjusts the proportion of each color′s luminous intensity.At the same time,an accuracy evaluation indicator for color matching model was given.Based on the model,a dichotomy algorithm of RGB color matching is employed so that the chromaticity coordinates of mixed color can be quickly matched to a specified scope.The simulation results prove the correctness and validity of the algorithm.This algorithm has a high value in practical application for its rapid convergence and high precision color matching.863半导体照明工程重大专项(2006AA03A175);福建省重大专项(2006H0092);福建省自然科学基金(2008J0030