PID techniques in intelligent and adaptive algorithms

In this paper, several design approaches for deriving the monovariable PID controllers, such as auto-tuning, self-tuning, pattern recognition and fuzzy logic, are reviewed and implemented. Some experiments are conducted to observe the ability of the controllers in a level process under setpoint changes. The experimental results show that the PID control strategies are capable of giving a good closed-loop dynamic for the level control system in wide range operation