再生制动是混合动力汽车提高燃油经济性和减少排放的有效措施，是混合动力汽车整车控制的核心技术之一。课题以CVT重度混合动力轿车为研究对象，对电液复合制动的共性关键问题进行应用基础性研究，具体包括：1）混合动力汽车电液复合制动工作机理和耦合特性研究；2）全制动工况下最佳制动能量分配与控制；3）基于动态响应和平顺性的制动模式切换控制；4）基于效率优化的CVT速比控制；5）电液复合制动系统压力协调控制；6）电液复合制动的物理模拟与控制性能优化。通过以上研究，建立实现整车安全制动条件下的整车最佳能量分配与控制方法、制动模式平顺性切换控制方法、再生制动效率优化的CVT速比控制方法、电液复合制动压力协调控制方法和新型制动系统设计和性能分析方法。研究成果有利于克服我国在混合动力电液复合制动控制技术研究中的难点，为实现整车最优控制和性能匹配提供理论依据，为整车控制技术产业化开发奠定基础。

Regenerative braking is the effective measure for the hybrid vehicle to improve fuel economy and reduce emission. It is one of the key technologies of the hybrid vehicle control. This task selects heavy hybrid vehicles with CVT(Continuous Variable Transmission) to fundamentally research the common and key issues in electro-hydraulic braking control, shown as: 1) working mechanism and coupling characteristics of the electro-hydraulic braking; 2) optimal braking energy distribution and control under overall braking condition;3) control of the mode switching based on dynamic response and ride comfort; 4) CVT ratio control based on efficiency optimization; 5) pressure coordinated control of the electro-hydraulic braking system; 6)physical simulation and control performance optimization of the electro-hydraulic braking system. Through the researches above, the optimal vehicle braking energy distribution and control strategy under the vehicle’s safety braking precondition, the control strategy of switching smoothness between braking modes, the CVT ratio control methods to optimize regenerative braking efficiency, the pressure coordinated control method and the system design and performance analysis of a new braking system, will be established. The achievements will benefit to overcome the difficulties in our regenerative braking research of the hybrid vehicle. It can also provide theoretical basis to realize vehicle’s optimal control and performance matching, and establish foundation for the regenerative braking control technology industrialization.