Improvement of road condition evaluation taking advantage of angular velocity vehicle response measurement and movie records

2016 Fiscal Year Final Research Report

• Project/Area Number: 26289141
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Structural engineering/Earthquake engineering/Maintenance management engineering
• Research Institution: The University of Tokyo
• Principal Investigator: Nagayama Tomonori 東京大学, 工学(系)研究科(研究院), 准教授 (80451798)
• Co-Investigator(Kenkyū-buntansha): 大島 義信 京都大学, 工学(系)研究科(研究院), 准教授 (10362451)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 路面評価 / IRI / スマートフォン / プロファイル / カルマンフィルタ

Outline of Final Research Achievements

There are research attempts on road profile estimation based on vehicle responses in order to achieve efficient and effective road condition evaluation. However, most approaches use simple Quarter-Car models and employ only acceleration measurement. Half-Car model and angular velocity measurement are important to deal with real vehicle motion, which is often affected by the pitching motion. This research models vehicles by a Half-Car model and a parameter identification method is developed. The profile is estimated with the model in pseudo-real-time. In addition, the estimated profile is converted to IRI and the result can be synchronized with drive-recorder movie files for image-based road evaluation.

Free Research Field

振動工学，橋梁工学，モニタリング