P-隐式广义预测控制在球磨机制粉系统中的应用  

Proportional Implicit GPC Control in Ball Pulverizing System

作　　者：门洪[1] 李项楠 史冬琳[1] 

机构地区：[1]东北电力大学自动化工程学院,吉林吉林132012

出　　处：《化工自动化及仪表》2013年第6期734-737,共4页Control and Instruments in Chemical Industry

基　　金：国家重点基础研究计划("973")项目(2007CB206904)

摘　　要：球磨机制粉系统多变量、强耦合的特点使得传统的控制策略难以取得良好的控制效果。通过选择合适的权矩阵,预测控制可以实现间接解耦控制,但系统的跟踪性能将大大降低。提出了带比例调节器的隐式广义预测控制(P-隐式GPC)算法,将其他通道对当前通道的影响作为扰动,从而实现近似解耦。在目标函数中用控制量的增量代替控制量,使控制增量变化不至过于剧烈,新增加的比例调节器使设定值与实际值的偏差实时改变,增强了系统的跟踪性能。将该算法应用到球磨机制粉系统取得了良好的控制效果。Considering the fact that multivariable and strong coupling of the ball mill pulverizing system makes traditional control strategy hard to obtain good control effect;and by selecting the right matrix,the predictive control can realize indirect decoupling control,but the system＇s tracking performance becomes lower.An implicit generalized predictive control algorithm with proportion regulator was proposed,which takes the influence of other channels as disturbance to realize the approximate decoupling;and in the objective function,replacing control variables with their increments to weaken these increments,and newly-added proportional controller can change the error between references and system outputs at real time so as to enhance the system＇s tracking performance.Applying it to a ball mill can achieve good control effect.

关 键 词：球磨机制粉系统 比例调节器 隐式广义预测 解耦控制 

分 类 号：TQ515.8[化学工程]