计及供气波动的燃气发动机空燃比鲁棒控制  

Robust Air-Fuel Ratio Control of Gas Engines Considering Fluctuation of Gas Supply

作　　者：杨君[1] 王明杰 于蓬 王健[1] Yang Jun;Wang Mingjie;Yu Peng;Wang Jian(Shandong Jiaotong University,Jinan City,Shandong Province 250357,China;Jinan Yingqing Power Technology Limited Company,Jinan City,Shandong Province 271100,China)

机构地区：[1]山东交通学院,山东省济南市250357 [2]济南嬴氢动力科技有限公司,山东省济南市271100

出　　处：《农业装备与车辆工程》2021年第8期1-4,14,共5页Agricultural Equipment & Vehicle Engineering

基　　金：国家自然科学基金项目“生物质气内燃发电机组全工况建模与随机优化控制策略研究”(61803231);山东省高等学校青创科技计划项目“增程式电动汽车能量管理与智能辅助驾驶关键技术研发与应用”(2020KJB002)。

摘　　要：研究了计及燃气供给系统压力波动的燃气发动机空燃比鲁棒控制问题。基于燃气发动机气路和油路的动态方程,设计了空燃比鲁棒控制器,以抑制燃气供给系统压力波动对空燃比控制精度的影响。通过数值仿真验证了所设计空燃比鲁棒控制器在3种工况下的有效性。仿真结果表明,所设计的空燃比鲁棒控制器的性能指标均优于开环控制器,且能够将燃气供给系统压力波动的影响抑制在所设定的水平之下。Robust air-fuel ratio control problem of gas engines considering the pressure fluctuation of gas supply system is researched.Based on the dynamic equations of air path and fuel path,the robust air-fuel ratio controller is designed to attenuate the influence from the pressure fluctuation of gas supply system to the control accuracy of the air-fuel ratio control.Effectiveness of the proposed robust air-fuel ratio control is validated through the numerical simulation under three working conditions.The simulation results show that the performance indexes of the proposed robust air-fuel ratio controller are better than the ones of the open-loop controller,and the influence from the pressure fluctuation of gas supply system can be attenuate below the designed level.

关 键 词：燃气发动机 空燃比控制 压力波动 鲁棒控制 燃气供给系统 

分 类 号：TK46[动力工程及工程热物理—动力机械及工程]