基于CAN总线的混合动力公交客车控制系统设计

The design of control system of hybrid electric bus based on CAN bus

针对混合动力公交客车,本文提出一种依据系统功率,确保柴油发动机转速、运行工况相对稳定,兼顾柴油发动机经济性、排放性的串联式控制系统的控制策略.确定选用CAN总线作为其控制网络,对控制网络结构进行了总体设计,在此基础上提出了一种网络冗余的设计方案,保证了数据传输的可靠性,并进行了应用层程序的设计,实现了网络冗余、自检、数据收发的功能。

This paper proposes one kind of control strategy of series hybrid control system for hybrid electric bus. The control strategy is determined according to its targets to stabilize the speed of diesel engine and reduce fuel consumption and emissions. The CAN bus is chosen as control area network, this paper designs the whole net-work of the control system and presents a scheme of network redundancy, it assures reliability of the data transmission. And it designs the application layer program, it realizes the functions of redundancy, self-test and transceiver of datum etc.