Optimal control theory solutions for investigation of a hybrid electric vehicle's powertrain
The paper gives a theoretical background of the development a control strategy for a hybrid electric vehicle (HEV). Properties of a HEV that define its fuel economy and pollutant emissions are briefly described. Analysis of energy flows in a HEV's powertrain is carried out. Based on this analysis a way to optimize energy flows is proposed. Said way implies a method of optimal control theory, namely dynamic programming, to be utilized. HEV's model implemented in a DP-based routine is presented. Some theoretical background about DP is given as well. The most interesting results of DP-investigations are presented in the next section. The last section of the paper contains some conclusion remarks.