Suboptimal control based on hill-climbing method for time delay systems

Recent efforts are encountered to obtain suboptimal controllers using evolutionary algorithms on control of system without delays, including proportional integral derivative (PID) controllers. However, the problem of optimisation on delay control systems has been solved through traditional techniques based on search optimal control. A numerical optimisation problem for a kind of time delay control system is presented. A suboptimal control law is synthesised using a method based on the hill-climbing algorithm, in order to minimise a quadratic index. The stability analysis for the proposed controller is proposed. Finally, experimental results using the proposed method are shown.