关键词: 双模式机电复合传动, 功率分配, 最小值原理；优化控制策略

Abstract:

Based on Pontryagin's minimum principle, an optimal control theory was applied to derive a methodology for the power split algorithm of two-mode EMT system. Under the premise of sustaining the battery state of charge(SOC), the fuel consumption was used as the optimization objective function. Then, the optimal system working conditions were determined according to the optimization process and the mathematical model of the system. The simulation results show that the research of EMT control strategy has significant oil-saving effect. The control strategy is effective and provides the foundation for developing and optimizing the real-time control strategy.

Key words: two-mode electro-machanical transmission(EMT), power distribution, minimum principle, optimal control strategy