CAJ | 학술논문

混合动力系统的拓扑结构和控制策略决定了整车的性能。文中提出了一种适合城市公交工况的基于地面扭矩耦合方式的混联式液压混合动力系统，以及以满足车辆瞬时动力需求为基础、以全局经济性最优为目标的整车能量管理策略；借鉴研究混杂系统的方法和思路，采用了分层递阶控制以简化系统的结构；基于 Matlab ／Simulink ／Statflow 联合仿真技术，建立整车前向模型，并选择 ECE 城市循环工况对整车的经济性和动力性进行分析。结果表明，文中所提出的液压混合动力系统及控制策略可明显改善发动机的输出特性，有效地提高整车的燃油经济性和瞬时动力性。
혼합동력계통적탁복결구화공제책략결정료정차적성능。문중제출료일충괄합성시공교공황적기우지면뉴구우합방식적혼련식액압혼합동력계통，이급이만족차량순시동력수구위기출、이전국경제성최우위목표적정차능량관리책략；차감연구혼잡계통적방법화사로，채용료분층체계공제이간화계통적결구；기우 Matlab ／Simulink ／Statflow 연합방진기술，건립정차전향모형，병선택 ECE 성시순배공황대정차적경제성화동력성진행분석。결과표명，문중소제출적액압혼합동력계통급공제책략가명현개선발동궤적수출특성，유효지제고정차적연유경제성화순시동력성。
The whole vehicle performance depends on the topological structure and the control strategy of hybrid power system.In this paper,a series-parallel hydraulic hybrid system is proposed on the basis of ground torque coupling mode.This kind of hydraulic hybrid system is suitable for the working condition of urban public traffic.In order to meet the instantaneous power requirement of vehicles and achieve the optimal global economy,an energy management strategy is proposed for the whole vehicle.Then,to simplify the system structure,the progressively hierarchical control method is adopted according to the hybrid system theory.Finally,through the Matlab /Simu-link /Statflow co-simulation,a forward model of the whole vehicle is established and the fuel economy and the dynamic performance of a whole vehicle are analyzed under the ECE city driving cycle.The results show that the proposed system and strategy can significantly improve the engine output characteristic and effectively increase the fuel economy and the instantaneous dynamic performance of the whole vehicle.