Research on Discrete-time Adaptive Control of Electrode Regulator System of Arc Furnace

In this paper, the discrete-time adaptive control of electrode regulator system of arc furnace is discussed. First, the nonlinear function relation that is between arc length and arc current of arc furnace main circuit is expressed with piecewise-linear function, and then a piecewise-linear model of electrode regulator system is presented. Based on this the design of arc furnace electrode regulator adaptive control system is made, the rule of discrete-time model reference adaptive control is proven. The results of simulation show that adaptive control has favorable tracking characteristic and capability of restraining dithering, and that the performance of adaptive system is much better than PID control system. The research provides a new method for developing new type electrode control system.