摘要
为弥补发动机空燃比信号的传输延迟对空燃比控制精度的影响,设计了一种基于广义预测控制(GPC)的空燃比控制策略;利用Matlab/Simulink建立广义预测控制器的算法模型,并以dSPACE MicroAutoBox为算法实施平台,在NQ150N型天然气发动机上进行实验。结果表明,与PID控制算法相比,基于GPC的控制算法稳态性能优良,能明显改善过渡工况空燃比的控制效果。
To offset the effects of the transmission delay of air-fuel ratio （AFR） signal on the accuracy of AFR control, an AFR control strategy based on generalized predictive control （GPC） is devised. A model for GPC algorithm is built with Matlab/Simulink and implemented on dSPACE-MicroAutoBox plateform to concudt a test on NQ150N CNG engine. The results show that compared with PID control algorithm, the GPC-based algorithm has better steady-state performance, enabling better control effects of AFR under transient conditions.
出处
《汽车工程》
EI
CSCD
北大核心
2013年第5期403-407,共5页
Automotive Engineering
基金
国家"863"节能与新能源汽车重大项目(2006AA11XK116674)资助
