摘要
针对混沌优化算法在汽油机瞬态空燃比控制系统中的应用,提出基于该算法的空燃比控制器参数优化模型,并对控制器中的各种反馈参数进行每一工况的全局寻优。利用MATLAB软件建立瞬态空燃比控制器参数优化的仿真模型,并且进行了仿真对比验证。仿真结果表明,通过混沌优化算法能够提高汽油机瞬态空燃比的控制精度,并且可以使反馈参数同时达到每一工况的最优值。最后通过发动机台架试验验证了仿真结果的准确性。
For the application of chaos optimization algorithm in gasoline engine transient air- fuel ratio control system, the air-fuel ratio controller parameters optimization model based on this algorithm is proposed, which is utilized to seek optimization of each of the conditions for different feedback parameters in the controller. MATLAB software is used to establish the simulation model of parameter optimization for the transient air- fuel ratio controller, and the comparative results are validated via simulations. The results show that the chaos optimization algorithm can improve accuracy of the gasoline engine transient air-fuel ratio control, and it can also enable the feedback parameters reach the optimal values in each of the conditions simultaneously, the accuracy of the simulation results is verified by the engine bench test.
出处
《汽车技术》
北大核心
2016年第5期31-36,共6页
Automobile Technology
基金
国家自然科学基金项目(51176014)
湖南省自然科学基金项目(2016JJ2003)
关键词
汽油机
瞬态工况
空燃比
混沌优化算法
控制
Gasoline engine
Transient condition
Air-fuel ratio
Chaos optimization algorithm
Control
