基于CAN总线的机械式自动变速器综合控制研究

Synthetic Control of Automated Mechanical Transmission Based on Controller Area Network

对机械式自动变速器与发动机电子控制系统之间相互通信的必要性作了阐述 ,并对通信的总线——控制器局域网 (CAN)的特点及通信协议进行了分析。在确定双方通信的信息及信息优先权后 ,对发动机与离合器的综合控制进行了研究 。

It is one of trends to communicate among Electronic Control Unit of vehicle electronic control systems such as EFI (engine electronic fuel injection), AT (automatic transmission) and ABS (Anti brake system) for message share and integrated control. The paper describes the necessity of the communication between automated mechanical transmission (AMT) and engine electronic control system. The controller area network (CAN) bus is chosen for communication between ECU because of its high reliability and flexibility, and the characteristics and protocol of the bus are analyzed. The communication messages and priority are also presented in the paper. The research on integrated control of engine and AMT is carried out to improve the performance of starting and shifting. Finally, the result of integrated control is presented and it proves that the method is effective and useful.