Converter blowing end point control method

摘要

PURPOSE:To improve the assuming accuracy and to execute control of finishing point of the blowing having the high followability without developing hunting phenomenon by making the ratio of update of learning term large in the case of satisfying the prescribed condition with the control method for using an exponential smoothing method in the learning method of the model equation to learn step by step. CONSTITUTION:By using the prescribed model equation in a converter, at the first step, the update of the learning term a0 with the ordinary exponential smoothing method is executed and when the error at this time succeeds to the same direction in successive two heats, further the rate of the update of the learning term a0 is made to large, to execute the renew of the learning term a0 at the second step. Then, in case the error succeeds to the same direction over in successive few heats, further the rate of the renew of the learning term a0 is made to large and by learning step by step, the flowing of the leaning term a0 to rapid conditional change is quickened, to execute the control having high followability without developing the hunting phenomenon. Therefore, a hitting accuracy of the finishing point is remarkably improved, and the quality and the operational efficiency can be improved.