Title :
Indirect control of luminous flux and chromatic shift methodology applied to RGB LEDs
Author :
Cordeiro, Rodrigo G. ; Cardoso, Alexandre S. ; Duarte, Renan R. ; Soares, Dieter G. ; Pereira, Guilherme G. ; Vizzotto, William D. ; Bender, Vitor C. ; Marchesan, Tiago B.
Author_Institution :
Group of Intell. in Lighting, Fed. Univ. of Santa Maria, Santa Maria, Brazil
Abstract :
This paper presents a method of control for RGB LED systems, modelling and equating of a system of LEDs are shown in details in order to obtain constant output luminous flux information for each color, reducing the color shift with the temperature variation. Also the paper discusses the control strategy employed and the methodology employed to eliminate the temperature influence on the color shift. Some simulation results are shown in order to prove the methodology, followed by some practical results.
Keywords :
light emitting diodes; lighting control; street lighting; RGB LED system; chromatic shift methodology; color shift reduction; luminous flux control; street lighting; temperature variation; Color; Control systems; Image color analysis; Junctions; Light emitting diodes; Mathematical model; Temperature measurement; RGB LEDs; compensator; constant luminous flux; control; modelling;
Conference_Titel :
Industry Applications (INDUSCON), 2014 11th IEEE/IAS International Conference on
Print_ISBN :
978-1-4799-5550-3
DOI :
10.1109/INDUSCON.2014.7059453
