A framework for the automatic synthesis of hybrid fuzzy/numerical controllers

Harmony search algorithm and Lyapunov theory based hybrid adaptive fuzzy controller for temperature control of air heater system with transport-delay

“…Researchers, during the last two decades, have continuously proved that the conventional PID type controllers are not suitable for these types of applications [1,[5][6][7] and several research works have corroborated the fact that fuzzy logic controllers (FLCs) possess tremendous potential to find their applications in these fields [8,10,12]. Several researchers are also motivated by the hybrid design methodologies combining fuzzy control theory with genetic algorithm to accommodate the complexities of the system to be controlled [9,13,18,19]. In this work, a small-scale, real version of a typical industrial thermal process is developed in our laboratory to emulate an air heater thermal process and it presents an excellent opportunity to test our designed stable adaptive fuzzy control methodologies in these situations.…”