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注汽锅炉蒸汽干度的模糊预测控制
Fuzzy Predictive Control of Steam Dryness for Steam-injection Boiler
【Author】 Yang Jianhua, Liu Wenqi, Lu Wei School of Electronic and Information Engineering, Dalian University of Technology, Dalian 116023, P. R. China
【机构】 大连理工大学电子与信息工程学院;
【摘要】 鉴于油田注气锅炉出口蒸汽干度控制系统的当前状况,在分析蒸汽干度对象的特性及其影响因素的基础上,提出了注汽锅炉干度的基于T-S模型的模糊预测控制系统(Fuzzy Predictive Control System)。该系统采用蒸汽压力误差及其变化率为输入变量的二维模糊控制器调节水流量,以稳定蒸汽压力;在燃料量—蒸汽干度调节回路中采用基于T-S模糊模型的模糊预测控制得出控制量,并将其与水流量前馈控制量相乘,构成蒸汽干度的前馈—反馈控制,通过燃料量和给水量的协调控制,快速消除蒸汽干度偏差。仿真结果研究表明,该模糊预测控制系统具有良好的控制性能,并且算法简单、易于实现。
【Abstract】 A fuzzy predictive control system of steam dryness for steam-injection boiler is presented in this paper,which is based on the investigation of current control systems and the analysis about the characteristics and influencing factors for steam Dryness.In this control system,a two dimension fuzzy controller is employed to steady steam pressure,and error and error change of steam pressure are used as the input variables of this fuzzy controller.A fuzzy predictive controller based on T-S fuzzy model is employed to obtain the control variable of fuel-dryness closed loop.And this control variable is multi- plied by the feed forward control variable to form the feed forward-feedback control of dryness fraction.The simulation re- sults show that the presented fuzzy predictive control system has good control performance and simple algorithm for easy re- alization.
【Key words】 Steam Dryness Control; Steam-Injection Boiler; T-S Fuzzy Model; Fuzzy Predictive Control;
- 【会议录名称】 第二十六届中国控制会议论文集
- 【会议名称】第二十六届中国控制会议
- 【会议时间】2007-07-26
- 【会议地点】中国湖南张家界
- 【分类号】TP273.4
- 【主办单位】中国自动化学会控制理论专业委员会(Technical Committee on Control Theory,Chinese Association of Automation)