Estimation of tyre-road friction coefficient. (1st January 2012)

• Record Type: Journal Article
• Authors: Li, Yao; Zhang, Jianwu; Guan, Xiqiang
• Is Part Of: International journal of vehicle systems modelling and testing. Volume 7:Number 3(2012)
• Page Start: 285
• Page End: 302
• Publication Date: 2012-01-01
• Subjects: tyre-road friction coefficient -- brush tyre model -- BTM -- maximum tyre aligning moment -- non-linear observer -- tyre side slip angles; Motor vehicles -- Design and construction -- Periodicals; Motor vehicles -- Testing -- Periodicals; Motor vehicles -- Mathematical models -- Periodicals; 629.2310151
• Languages: English
• ISSNs: 1745-6436

Abstract

Tyre-road friction coefficient is hard to detect while it is important for vehicle control systems, especially the vehicle active safety control systems. This paper presents a maximum aligning moment method which requires no additional sensors if the vehicle is equipped with an electric power steering (EPS) system. A non-linear observer method is designed for the estimation of friction coefficient as well as the continual estimation of tyre slip angles. One combined estimation method is proposed to compensate for the drawbacks of the two methods above. These estimation methods are verified by computer simulations with experimental results in various conditions.