The robust adaptive control of arc furnace system based on backstepping method

Three-phase arc furnace system as a kind of typical nonlinear, three-phase strong coupling system which has complex and uncertain disturbance, traditional control method such as PID is hard to obtain the good control effect. Robust control is just brought out to deal with system uncertainty, whose research emphasis is to discuss the resistance of the system´s certain characteristics or index to some disturbance. This article in view of the electric arc furnace system´s nonlinear mathematical model, combining with the feedback linearization output tracking control, designed index robust adaptive control which based on Backstepping method. The simulation results show that: the design of the L₂ index robust adaptive controller has better tracking performance and robustness than PID controller. It proves the correctness of the designed algorithm from the hardware point of view. Anti-jamming performance also meets the system control requirements.