fuzzylite: a fuzzy logic control library in C++

Fuzzy Logic Controllers (FLCs) are software components found nowadays within well-known home appliances such as washing machines, rice cookers and refrigerators. Their objective is to control certain operations of these devices utilizing rules expressed with the uncertainty of human terms such as cold, heavy and fast. Such a flexibility has made of FLCs a widely used approach to incorporate artificial intelligence not only into home appliances, but also into energy-efficient motors, industrial control systems, human decision making, robots, and much more. State-of-the-art libraries to model FLCs have strong limitations in terms of licensing, cost, design and implementation, all of which have been recently addressed in a free open-source fuzzy logic control library named fuzzylite. This paper presents an introduction to fuzzy logic control and the underlying design and operation of fuzzylite.