High Power LED Parametric Modelling Using a Double Polynomial Approximation


  • Karel Zaplatílek Department of Electrical Engineering, University of Defence, Brno, Czech Republic
  • Jan Leuchter Department of Radar Technology, University of Defence, Brno, Czech Republic




power LED module, optimal polynomial approximation, Euclidean norm of residues, MATLAB&Simulink,, Spice compatible model, Micro-Cap simulator


This article describes calculations for an accurate mathematical model of high power LED modules using double optimal polynomial approximation. The model is based on unique tests of various LED types in a thermal chamber, providing a comprehensive list of parametric temperature profiles. This model was then implemented into MATLAB®&Simulink® and Micro-Cap programs as a Spice compatible electronic circuit model, utilising the newly created algorithm. To define an optimal degree of approximation polynomials, Euclidean norm of residues was used. The new described algorithm in this article was verified using real-life data tested at the author’s work site, where the corresponding research takes place. To maximise the test’s efficiency, an automated data collection system was created. This article describes one particular tested LED module whose characteristic was modelled in both the absolute and the normalised form for easy comparison.


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How to Cite

Zaplatílek, K., & Leuchter, J. (2017). High Power LED Parametric Modelling Using a Double Polynomial Approximation. Advances in Military Technology, 12(1), 49–60. https://doi.org/10.3849/aimt.01174



Research Paper