Abstract
In recent years, automotive manufactures have installed dozens of electronic controller units (ECUs) for various functions related to safety and convenience of drivers. Each ECU controls specific functions of a vehicle, and exchanges information by using the controller area network (CAN). It is characterized by low cost, efficient communication, and high flexibility. In this work, we aim to study the property of CAN bus, and design a new traffic control algorithm to get an excellent CAN system performance. By employing the concepts of two different cooperative game solutions, our approach explores the impact of ECUs' mutual-interaction relationship and devises a novel two-step game model to take the full advantages of CAN resource sharing process. To adaptively handle different data service requirements, control decisions in our two-step game are mutually dependent each other, and each individual ECU acts cooperatively in the proper collaboration manner. This interactive coordinated process continues until a desirable solution is obtained; it is a practical and suitable approach in real world CAN system operations. Finally, simulation testbed is constructed and the numerical analysis is conducted to demonstrate the performance improvement of our proposed method. In addition, several research challenges are discussed and open issues are also outlined.
Highlights
Automotive vehicle systems have been developed with complexity due to ever-increasing adoption of electronics including engine management, ignition, radio, carputers, telematics, in-car entertainment systems, and electronic controller units (ECUs)
We investigate the controller area network (CAN) traffic control problem, and develop a new two-phase cooperative game model by using the concepts of MREBS and RBEBS
The traffic amount for each ECU is adaptively decided according to the MREBS
Summary
Automotive vehicle systems have been developed with complexity due to ever-increasing adoption of electronics including engine management, ignition, radio, carputers, telematics, in-car entertainment systems, and electronic controller units (ECUs). The main goal to design a new dual-channel CAN control scheme is to guide rational and strategic ECUs’ decisions toward their effective cooperation and consensus through fair-efficiently sharing the limited CAN bandwidth. It is an extremely challenging and difficult work. At the first-step game model, the idea of MREBS is used to compromise the conflicting views of different ECUs. Through the approach of minimax regret preferences, cooperative interactions among ECUs result in a fairefficient bandwidth sharing solution. At the second-step game model, each individual ECU distributes its assigned traffic amount into the dual CAN channels based on the concept of RBEBS.
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