Obtaining an Optimum PID Controllers for Unstable Systems using Current Search

novel meta-heuristic intelligent search method in industrial control domain, is proposed in this article. The CS is inspired by an electric current flowing through electric networks. It is conducted to synthesize an optimum PID (proportional-integral-derivative) controller for stabilizing three unstable plants, i.e. inverted pendulum, ball-beam, and pitch control systems. The CS is used to search for the optimum controller's parameters denoted as proportional, integral, and derivative gains. As simulation results, optimum PID controllers can be achieved by the CS. The results obtained are very satisfactory.

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