电喷发动机过渡工况空燃比鲁棒控制研究.pdfVIP

37 9 ( ) V ol . 37, No . 9 2 0 1 0 9 Jo urnal o f Hunan U niv ersity ( N atural Sciences) Sep 2 0 1 0 20 10) 0900 1905 * 石向南, 邓元望, 朱 浩 ( , 4 10082) 阐述了最优H 控制理论, 并将其用于电喷发动机空燃比控制; 在 分考虑外 部干扰和系统模型不确定性的情况下, 讨论并制定了最优H 理论控制策略. 采用面向对象 的GTPow er 仿真软件, 从物理模型出发建立了电喷发动机仿真模型; 用 Mat lab/ Sim ulink 软件建立起相应的最优H 控制器和PI 控制器; 最后运用 M at lab/ Simulink 与GTP ow er 的接口, 建立电喷发动机实时控制系统. 仿真结果表明 最优H 控制相对于P I 控制具有更 好的鲁棒稳定性和抗干扰能力, 提高了空燃比的控制精度. 内燃比; 过渡工况; 空燃比; 最优H 控制; PI 控制 T K432 A R esearch on t he T r ansient A ir Fuel Ratio Cont rol of SI E ng ine Based on R obust Cont rol T heory SH I X iangnan, DEN G Y uanw ang , ZH U H ao ( Stat e K ey L abor ator y of Advanced Desig n and M anuf acture f or V ehicle Bo dy , H unan U niv, Ch angsh a, H unan 4100 82 , China) Abstract:T he b asic method of Hinfinit y Opt imum contro l t heor y w as descr ibed and applied t o the de sig n of air f uel ratio cont roller in elect ro nic fu el injection engine. T he sim ulat ion m odel w as est ablished w it h t he GTPow er soft w are based on the physical mo del. In t he case of outside dist urb ance and mo del un cert aint y, t he st rat eg y of Hinf init y Opt imum w as discu ssed and det erm ined. T he cont roller of Hinf init y Opt imum and PI w as est ablished w it h t he M at lab/ Simulink sof t w are. A realt ime contr ol syst em w as es t ablished fo r elect ronic fu el inject ion eng ine thro ug h u sing the junct ure bet w een the GTPow er and