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    Comparison of PSO-PID, FLC and PID in a circulating fluidized bed boiler
    (2011) Aygun, H.; Demirel, H.
    Bed temperature is one of the most important parameters in a circulating fluidized bed boiler. Because combustion efficiency increases with rising of bed temperature and also harmful emissions are affected by bed temperature. Classical PID controller can't give fast response to instant changes in boiler. So modern control methods must be used for bed temperature control of circulating fluidized bed boiler. In this study PSO-PID (Particle Swarm Optimization based PID), FLC which are modern controllers, and classical PID controller are used for controlling bed temperature of a circulating fluidized bed boiler and they are compared. Simulation results show that settling time in PSO-PID controller is lower than the other controllers. PSO-PID decreases overshoot like FLC but in classical PID controller overshoots are the biggest. In FLC there are no overshoot. So if overshoot isn't wanted, a FLC must be used and if short settling time is wanted, a PSO-PID controller must be used. © 2011 Chamber of Turkish Electric.
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    A novel sensorless field oriented controller for Permanent Magnet Synchronous Motors
    (Institute of Electrical and Electronics Engineers Inc., 2014) Aygun, H.; Gokdag, M.; Aktas, M.; Cernat, M.
    In this paper, a Particle Swarm Optimization based PI controller (PSO-PI) is used for control the speed and the torque of a Permanent Magnet Synchronous Motor (PMSM) while a Model Reference Adaptive System (MRAS) based on an Artificial Neural Network (ANN) estimation mechanism is applied to estimate sensorless the speed. In order to show the capability of the proposed PSO-PI controller, it is compared with a Fuzzy-Logic PI controller and with a classical PI controller. The simulation results prove the usefulness of the proposed PSO-PI controller. © 2014 IEEE.