【摘要】 针对电站锅炉具有大惯性、大纯滞后、强干扰等特点,采用最小二乘和相关系数辨识相结合的方法建立系统数学模型;构造带前馈的串级控制器调节主蒸汽温度,控制器外环采用阶梯式广义预测控制,内环为PID(proportional-integral-derivative)控制;设计并使用了智能监督级,保证了先进控制的投用率.实际运行情况表明,该先进控制系统具有良好的控制品质.更多还原

【Abstract】 Boilers in power stations have the characteristics of large time constant,large pure time delay and strong disturbances.A model was proposed based on least squares method(LSM) and correlation coefficient identification approach,and a cascade controller was constructed with feedforward for main-steam temperature.Stair-like generalized predictive control was used in the outer-loop of the controller and PID control was used in the inner-loop.The supervisory shell for the controller was designed and used to increase its running-time.Application shows good quality of the advanced control system.更多还原