基于混沌粒子群优化的烧结过程自抗扰协调控制

摘要

在分析烧结料层的物料运行及烧结终点界定的基础上, 引入混沌粒子群优化自抗扰控制器参数的控制策略, 实现对烧结过程中的台车速度及其与圆辊给料机转速间的速比的控制.为准确确定烧结终点状态, 提高烧结矿的有效烧结效率, 以烧结机尾料层断面图像的灰度值为基础数据, 提出了判断烧结状态及提供反馈控制量的经验公式.将经验公式与自抗扰控制器相结合, 最终实现了台车速度增量及速比增量的协调控制.依据机尾料层断面火焰图像灰度数据, 对连续4d的烧结机台车速度及速比进行调节, 得到变化趋势相同的台车速度及圆辊转速过程曲线, 表明本文构建的方法是有效的.%On the base of the analysis for material operation of sintering mixture and the definition of sinter burn-through point, the control strategy of ADRC (Active Disturbance Rejection Controller) was introduced, and the control parameters of ADRC were optimized by CPSO (Chaos Particle Swarm Optimization), so as to realize the control for trolley speed and its ratio with speed of round roller feeder during sintering process.In order to determine the sinter burnthrough point accurately, and improve the efficiency of sintering, taking the grey value of the image of material layer section in the rear of sinter machine as basic data, an empirical formula for judging sintering state and providing feedback control quantity was proposed.By combining the empirical formula with the controller of auto disturbance rejection, the coordinated control between speed increment of trolley and speed ratio increment was realized.On the basis of grey data of flame image, the trolley speed and speed ratio for four days were adjusted to obtain the curves of trolley speed and roller speed with the same change trend.The results show that the method constructed in this paper is effective.