基于动态矩阵算法的直接空冷背压控制的优化  

Optimization of Direct Air Cooling Back Pressure Control Based on Dynamic Matrix Algorithm

作　　者：白建云 冯赓 李永茂 曲燕 骆丁玲 BAI Jian-yun;FENG Geng;LI Yong-mao

机构地区：[1]山西大学自动化系

出　　处：《电站系统工程》2018年第5期1-4,共4页Power System Engineering

基　　金：山西省煤基重大项目(MD2016-02)资助

摘　　要：由于直接空冷背压控制系统具有非线性、时变、大时滞、多变量等特点,传统PID控制无法取得预期的控制效果。针对上述问题,设计了一种动态矩阵算法,这种算法将系统未来的输出值提前反馈到控制器,对过程纯滞后特性具有明显的补偿效果,提高系统的稳定性和鲁棒性。结合某300MW直接空冷机组背压控制系统的数学模型进行仿真试验,结果表明,该控制算法相对于传统PID控制不仅超调量小,调节时间短,改善了控制系统动态响应性能,而且能有效解决模型参数改变带来的不稳定性,具有较强的适应性。Due to the characteristics of the existing direct air-cooled back pressure control system such as nonlinearity,time-varying, large time-delay and multivariable, the traditional PID control can not achieve the expected control effect.In order to solve the above problems, a dynamic matrix algorithm is designed. This algorithm feeds back the output value of the system to the controller in advance and has obvious compensation effect on the process-only hysteresis characteristic to improve the stability and robustness of the system.The simulation results show that the proposed control algorithm not only has the advantages of small overshoot and short adjustment time compared with the traditional PID control, but also improves the dynamic response of the control system and is effective Solve the model parameters change instability, with strong adaptability.

关 键 词：动态矩阵算法 直接空冷 背压控制 鲁棒性 

分 类 号：TK16[动力工程及工程热物理—热能工程]