<![CDATA[The fluidized coffee roaster is one of roasters which designed to overcome the weaknesses of the conventional roasting method. The purpose of this research is to develop a fluidization type roaster with a Fuzzy Logic control system. The specification of the roaster are roasting chamber dimensions of 65 mm (diameter) and 75 mm (height), a roasting capacity of 40 grams with a roasting time of 300 seconds. A heater with a power of 1,200 W was used as the source of heating energy. The research method was carried out by first, developed a control program and applied to the roaster. Then, a test of functionality and performance was conducted by using Robusta coffee for a temperature set point of 190°C, 200°C, and 210°C. The performance test of control responses resulted in 6.25°C (2,97%) error steady state for 15 seconds. However, this value remains below the tolerance threshold of 5%. The test of the color quality of coffee roasted at 190°C produced 3 groups of coffee colors, namely light brown-yellow, light brown-half-city, and light brown-cinnamon. In the case of roasting temperature of 200°C, it produced 3 color groups, i.e. light brown-city, light brown-full city, and light brown-full city+. For a roasting temperature of 210°C, there were two types of colors, namely dark brown-Vienna and dark brown-Italian. It can be concluded that a fluidized coffee roaster with a fuzzy logic control system was able to produce roast coffee compatible to the target roast profile according to the National Coffee Association (2002), namely light, medium, and dark.]]>
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