Optimized closed-loop algorithm for color control of multichannel LED lighting systems using multispectral sensor

Abdelhak Goudjil (1) , Eric Pigeon (1) , Mathieu Pouliquen (1) , Sylvain Girard (1) , Tomas Menard (1) , Olivier Gehan (1) , Basile Dufay (2) , Philippe Maugars (3) , Jean-Marc Paris (3)

1 LAC - Laboratoire d'automatique de Caen
2 Equipe Electronique - Laboratoire GREYC - UMR6072
3 PM Company

We provide an optimized closed-loop algorithm for color control of a multichannel light-emitting diode (LED) lighting system using a multispectral sensor. The proposed control scheme makes it possible to maintain a desired lighting ambience in a room by taking into account external lighting sources. It rejects disturbances specific to LEDs (spectral drift) or independent from them (variations in external lighting, changes in the room access conditions, or changes in the lighting inside the room such as a light addition). This control scheme consists of using a multispectral sensor, a regulator, an anti-windup system, an efficient optimization algorithm, and a set of colored LEDs. Experimental results show the high performance of a preindustrial system with a color difference Δu  ′  v  ′    =  0.0004. This value is below the threshold of the color difference that is considered noticeable by the human eye.

Domaines: Sciences de l'ingénieur [physics]

Abdelhak Goudjil, Eric Pigeon, Mathieu Pouliquen, Sylvain Girard, Tomas Menard, et al.. Optimized closed-loop algorithm for color control of multichannel LED lighting systems using multispectral sensor. Optical Engineering, 2020, 5, pp.053104. ⟨10.1117/1.OE.59.5.053104⟩. ⟨hal-02966017⟩