基于遗传算法的发动机模糊控制研究与应用

针对汽车发动机参数具有离散性、非线性和不确定性,难以精确控制瞬态过程的过量空气系数和点火时刻的问题,根据遗传算法和模糊控制理论,研究和设计了一种基于模糊控制的新型发动机集中控制装置。讨论了装置的硬件平台及工作原理,探讨了基于遗传算法的参数自寻优。通过实验验证了装置的可行性和可靠性,并表明动力性和经济性指标明显改善。

Study and Application of the Fuzzy Control Based on Genetic Arithmetic for Car-Engine

Aim for the problem that the parameters of car-engine are of discrete, nonlinear and uncertain characteristics, with which it is difficult to control accurately excess air ratio and spark advance angle in dynamic process, a design scheme of centralized control device for car-engine based on fuzzy control is introduced according to genetic arithmetic and fuzzy control theory First, the rales of the device and the design scheme of hardware are discussed. Further, parameters self-optimizing base on the genetic arithmetic is probed. The feasibility and reliability of the device are verified through the results of experiments, by which it has been demonstrated that the dynamic indexes and the economic performance indexes are all improved obviously.