Multi-objective optimal backstepping controller design for chaos control in a rod-type plasma torch system using Bees algorithm

In this study, we propose an optimal backstepping controller for chaos control in a rod-type plasma torch system. The Bees algorithm is used to determine the optimal parameters for the backstepping controller by minimizing a multi-objective function. The objective function is a weighted sum of the integral of time multiplied absolute error and the squared control signal. Our simulation results demonstrate the greater effectiveness of the proposed controller for chaos elimination in a rod-type plasma torch system compared with a sliding mode controller and a backstepping controller tuned by particle swarm optimization.