基于GPC的直接空冷机组背压控制优化研究  

Research on optimization of back pressure control of direct air-cooling unit based on GPC

作　　者：白建云 任岐 雷秀军 邵茹 霍涛 BAI Jianyun;REN Qi;LEI Xiujun;SHAO Ru;HUO Tao(Automation Department,Shanxi University,Shanxi Taiyuan 030013,China;School of Mathematical Sciences,Shanxi University,Shanxi Taiyuan 030006,China)

机构地区：[1]山西大学自动化系,山西太原030013 [2]山西大学数学科学学院,山西太原030006

出　　处：《工业仪表与自动化装置》2020年第6期105-109,112,共6页Industrial Instrumentation & Automation

基　　金：山西省科技重大专项“燃煤电厂大型空冷系统节能与安全运行技术及装备开发”(MD2016-02)。

摘　　要：针对现场直接空冷机组背压难以快速稳定跟踪设定值的情况,该文应用响应速度快、鲁棒性较好且易于在工业现场实现的广义预测控制(GPC)算法来优化背压控制,并通过仿真试验比较分析了背压控制系统分别采用PID,Fuzzy-PID和GPC控制时的控制性能。仿真结果表明,在设定点扰动和内部扰动情况下,GPC算法比PID和Fuzzy-PID控制具有更好的动态性能和稳态性能,在模型失配时具有更强的鲁棒性。GPC算法更适合应用到现场复杂工况下的背压控制系统中,对实际生产现场背压控制策略改进具有一定的指导意义。In view of the fact that the actual back pressure is difficult to track the set value quickly and stably,this paper applies the generalizedpredictive control(GPC)algorithm which can respond quickly,has good robustness and is easy to realize in the industrial production site to optimize the back pressure control.The control performance of the back pressure control system with PID,Fuzzy PID and GPC is compared and analyzed through the simulation test.The simulation results show that compared with PID and Fuzzy-PID control,the system has better dynamic performance and steady-state performance when using GPC algorithm in the case of set value disturbance and internal disturbance.GPC algorithm is more suitable for the back pressure control system under complex working conditions,and the optimization control method has a certain guiding significance for the actual production site back pressure control strategy improvement.

关 键 词：直接空冷机组 背压控制 广义预测控制算法 仿真试验 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]