Controller design for indoor lightning

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Dr. Kiss Bálint
Department of Control Engineering and Information Technology

With the growth of the economics of the world, the energy crisis is coming along. Thus, people are focusing on researching and developing intelligent devices to reduce the energy consumption automatically and efficiently to meet the demand of users according to the different external environment.

The goal of this thesis work is developing an intelligent MIMO (multi-input and multi-output) indoor lighting control system to save electrical energy. This system controls the luminance to reach a preset level in a given zone, no matter how the external disturbance influences. The system consists of a control unit (Arduino Mega Board), two light detecting sensors, two groups of light emitting diodes (LEDs) and a testing room. The primary function of this system is that the control unit adjusts the intensity of light emitted by the LEDs continually to distribute the luminance of the area uniformly. Given that, there exists coupling problem between different channels in MIMO system, finding a way to solve this is the most critical part of this control system.

Firstly, this report introduces the advantages and significance of the indoor lighting control system from the energy economy standpoint. Secondly, the experimental environment is presented that is room IB213 at the Budapest University of Technology and Economics. Then the hardware components and software tools are mentioned for the examination. Finally, a series of experiments are implemented to make a comparison with the control methods such as manual control, lookup tables, SISO (Single input single output) control, and MIMO control. Moreover, the maximum gap between two different references (for two channels) is tested while the controller is working effectively. Further, more than two channels will be implemented with the same decoupling control algorithm in this MIMO system in the future.


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