摘要
针对转炉炉口微差压控制系统的时变性、强干扰性及大时滞等非线性特征,本文提出了一种混合模糊推理与改进S m i t h预估补偿的控制策略。采用模糊推理,根据实际专家经验对微压差控制系统进行非线性控制,以提高系统的鲁棒性。提出了一种新型高阶Smith预估控制器,以补偿控制系统的时滞性,丰富系统的动力学特征。数值仿真表明,与传统模糊控制相比,本文提出的控制策略具有响应快、无超调的优点。工程实践效果表明,本文提出的转炉炉口微压差控制策略是有效可行的,达到了很好的烟气减排和煤气回收效果。
Aiming at the nonlinearities,such as the time varying,strong disturbance and large time delay and so on,of the micro pressure differences control system,a hybrid control strategy,which combines the fuzzy inferencing and an improved Smith predictor compensation.To improve the robustness of the system,fuzzy inferencing is employed for the nonlinearities control based on experts？knowledgements.A novel high order Smith predictor is also proposed for the compensation of the time delay and for the improvements of the system＇s dynamics.The numercial simulations indicate that the proposed control strategy is of more excellent perfoemance with fast response and no overshoots,when comparing with the conventional fuzzy control.The engineering practices also validate that the hybrid control method is suitable and efficient for the micro pressure differences control,and excellent performances of gas emission reductions and gas recoveries can be achieved.
出处
《自动化与仪器仪表》
2011年第6期14-15,18,共3页
Automation & Instrumentation
基金
酒钢集团公司2009年科技创新项目计划(JTJS090411)资助项目
关键词
转炉
微压差控制
模糊控制
SMITH预估补偿
Conventor
Micro pressure differences control
Fuzzy control
Smith predictor compensation
