燃料电池电动汽车机电混联式柔性制动关键问题研究

项目名称： 燃料电池电动汽车机电混联式柔性制动关键问题研究

项目编号： No.61004018

项目类型： 青年科学基金项目

立项/批准年度： 2011

项目学科： 无线电电子学、电信技术

项目作者： 谢长君

作者单位： 武汉理工大学

项目金额： 7万元

中文摘要： 现有电动汽车制动控制方法并不适用于燃料电池汽车强混合动力系统，研究并优化燃料电池电动汽车机电混合制动系统是亟待解决的关键问题。针对并联式或串联式制动结构存在的不足，本项目基于燃料电池系统-锂电池组-超级电容器三能源电电混合动力系统，提出一种机电混联式柔性制动结构，建立综合最优制动感觉与最大能量回收率的柔性制动控制目标，就机电制动力最优分配及制动回收系统能量管理两大关键问题进行研究。首先细化整车制动工况为三种典型制动模式，提出功率损失灵敏度分析方法对减速制动模式优化策略进行重点研究，并基于多模型控制方法实现制动回收系统的能量优化管理。进一步，基于柔性制动控制目标，结合能量管理策略，研究混合制动系统机电协调控制方法，实现整车在不同制动模式下液压制动与再生制动力的最优分配。以上拟从仿真模拟及测试实验两个角度展开研究，研究成果将为燃料电池电动汽车混合制动系统的设计奠定理论基础和实验支撑。

中文关键词： 混联式柔性制动；多模型控制；能量优化管理；机电协调控制

英文摘要： Now traditional control methods of electric vehicle braking system are not appropriate to solve the control problem for full hybrid powertrain system of Fuel Cell Electric Vehicles, so it is a very crucial issue to study and optimize mechanical and electrical hybrid braking system.In view of some deficiencies about parallel or series braking structure, the project of electromechanical series-parallel flexible braking system will be brought forward based on electric-electric hybrid power system, including fuel cell system, lithium battery pack, super capacitor. Control objectives of flexible braking will be established by optimizing braking feel and the ratio of energy recovery. In the whole system, how to solve two key issues is very important, which included electrical and mechanical braking force optimal distribution and energy management of braking recovery system. First, vehicle braking condition will be distributed into three types of braking mode. To do research for optimal control strategy of deceleration mode by power loss sensitivity method, Optimization strategy of energy management for braking recovery system will be achieved and designed based on multiple model control method. Further, based on control objectives of flexible braking and energy management strategy, to do research for mechanical and electronic coordination control methods of hybrid braking system, the optimal allocation of hydraulic braking and regenerative braking force in different braking modes will be achieved. To do research for this projects, two methods, including simulation and experimentation, will be applied. All research achievements will provide theoretical basis and experimental support for designing hybrid braking system of Fuel Cell Electric Vehicles.

英文关键词： series-parallel flexible braking；multiple model control; Optimization of Energy Management; Mechanical and Electronic Coordination Control