Application of indirect adaptive fuzzy control in are furnace

In this paper, the indirect adaptive fuzzy control is presented, and is applied to the electrode regulator systems of arc furnace, it is considered that the states are not available, then the state observer is designed. The adaptive fuzzy control is utilized to approach the uncertain function of plant, and the robust controller is added to the system in order to resist the external disturbances, and then the adaptive law was derived. The results of simulation show that this proposed control can restrain the external disturbances, and obtains much better dynamic and static characteristics.