Tire Characteristics Estimation Method Independent of Road Surface Conditions
Yuuki Shiozawa and Hiroshi Mouri
Mechanical Systems Engineering, Tokyo University of Agriculture and Technology
2-24-16 Naka-cho, Kognei-shi, Tokyo 184-8588, Japan
To control vehicle behavior, it is essential to estimate tire force accurately at all times. However, it is currently difficult to detect tire performance degradation before the deterioration of vehicle dynamics in real time because tire force estimation is usually conducted by comparing the observed vehicle motion with the onboard vehicle-model motion baseline reference. Such conventional estimators do not perform well if there is a significant difference between the vehicle and the model behavior. The lack of technology to easily predict tire forces and road surface friction is concerning. In this paper, a new tire state estimation method based on tire force characteristics is proposed.
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