NDLI: An optimization framework for control of non-square smart lighting systems with saturation constraints

Content Provider	IEEE Xplore Digital Library
Author	Afshari, S. Mishra, S.
Copyright Year	2015
Description	Author affiliation: Fac. of the Mech., Aerosp., & Nucl. Eng. Dept., Rensselaer Polytech. Inst., Troy, NY, USA (Mishra, S.) \|\| Electr., Comput., & Syst., Eng. Dept., Rensselaer Polytech. Inst., Troy, NY, USA (Afshari, S.)
Abstract	Smart lighting systems are illumination systems that use feedback measurements from a network of color sensors to drive a set of spectrally tunable light sources to achieve a desired light field in an illuminated space. This paper proposes a general feedback control design framework for non-square smart lighting systems with saturation bounds, i.e., systems with a larger number of source channels (with limited maximum light output) than sensor channels. Since the number of inputs is larger than the number of measurements, a one-to-one setpoint based feedback control design is not possible because of the inherent redundancies. The feedback control design for such lighting systems is therefore posed as a constrained optimization problem with a cost function penalizing quality of light output and power consumed; and solved through a closed loop feedback approach. Two solutions to this problem are proposed: one based on Newton-Raphson method with projection and the second based on the interior point algorithm. We demonstrate the stability of the feedback loop for the projected Newton-Raphson method. The two proposed smart lighting algorithms are experimentally validated by implementation in a full-scale in-use smart conference room and a comparison of their performance is presented.
Starting Page	1665
Ending Page	1670
File Size	452267
Page Count	6
File Format	PDF
e-ISBN	9781479986842
DOI	10.1109/ACC.2015.7170972
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-07-01
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	American Automatic Control Council(AACC)
Subject Keyword	Lighting Intelligent sensors Cost function Power demand Algorithm design and analysis
Content Type	Text
Resource Type	Article

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