The implementation of an efficient real time networking with Controller Area Network (CAN) for distributed real time control in Hybrid Electric Vehicle (HEV) is presented. HEVs are the present potential choice for environmental friendly public transportation systems. Their safety and functionality can be improved and many value added features can be easily incorporated with CAN based distributed control. In HEV different electrical systems are functionally interconnected, requiring exchange of information accurately in real time within defined communication latency. The CAN controller reduces communications burden on the host CPU (Central Processing Unit), thus allows to run its algorithms for better real time power train control. The differential physical layer improves data exchange integrity under EMI (Electromagnetic Interference) from power switching systems in this application. The implementation methodologies for Tl TMS320F2406 Digital Signal Processor and PIC18F4480 Micro controller based hardware with inbuilt CAN controllers are highlighted. An efficient mailbox filter configuration and message distribution scheme in different control modules in HEV as well as state machine for minimum boot-up process for CANopen protocol in master and slave nodes are detailed.
CAN-based distributed real-time control in hybrid electric vehicles
2006
9 Seiten, 9 Bilder, 9 Tabellen, 12 Quellen
Aufsatz (Konferenz)
Englisch
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