Image-Based Flame Control of a Premixed Gas Burner Using Fuzzy Logics

This paper presents an application of fuzzy logics for controlling the combustion flame of a premixed gas burner. The control objective is to achieve a good characteristic of combustion flame by visualizing the colors of the flame while maintaining its size as desired. The fuzzy logic controller adjusts the flow rates of gas and air independently through two stepper-driven needle valves. A CCD camera with an image-processing/frame-grabber card is utilized as a sensor unit. The image captured by the CCD camera is processed in real time to extract the color and size information of the flame. This information is then used as a feedback signal for the controller. The study results show that the fuzzy logic controller is able to automatically regulate the flame to achieve the objective as desired.