Studies on New Stochastic Models for Evaluating the Performance and Reliability of CAN Considering Harmonic Noise

2023 Fiscal Year Final Research Report

• Project/Area Number: 21K04551
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 25010:Social systems engineering-related
• Research Institution: Tokyo Metropolitan University
• Principal Investigator: Fukumoto Satoshi 東京都立大学, システムデザイン研究科, 教授 (50247590)
• Project Period (FY): 2021-04-01 – 2024-03-31
• Keywords: CAN / 高調波ノイズ / 評価モデル / ハイブリッド通信プロトコル / バス・エンフォーサ

Outline of Final Research Achievements

In this study, we developed a model to evaluate the effectiveness of high-reliability technologies, "Hybrid Communication Protocol" and "Bus Enforcer," against harmonic noise in the standard vehicular network CAN (Controller Area Network). We employed a combination of experimental, simulation, and mathematical models to examine the evaluation methods. The results demonstrated the effectiveness of the Hybrid Communication Protocol through a reliability evaluation model that focuses on the time until the network reaches bus off and its availability. Furthermore, the Bus Enforcer showed that bus control by the Enforcer is feasible for up to approximately 100 nodes in the assumed error scenarios.

Free Research Field

ディペンダブルコンピューティング

Academic Significance and Societal Importance of the Research Achievements

本研究で検討した，(a) の高調波ノイズによるビット誤りを記述する基礎的確率モデル，(b) CANハイブリッド通信プロトコルの評価モデル，(c) CANバスエンフォーサの評価モデルは，車載ネットワークとしての CAN および，高調波ノイズ環境での動作が想定されるロボットや産業機械などにおけるネットワーク設計にも応用可能である．また，高調波ノイズを考慮した新しいシミュレータの開発のための要素技術としても貢献できる．