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| Estimation method of tireroad friction coefficient based on maximum aligning moment |
| School of Mechanical Engineering, Shanghai Jiao Tong University |
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Abstract The tireroad friction coefficient is difficult to detect, while it is important for vehicle control systems, especially for vehicle active safety systems. A Brush tire model was introduced, and the lateral characteristics were verified by experimental results of a single wheel test bench. Based on the analysis of dynamic characteristics of an electric power steering (EPS) system, the total aligning moment of the steering system was measured by the sensors equipped with EPS. The linear relation between maximum total aligning moment and tireroad friction coefficient was derived. A theoretical approach for detecting the peak value of total aligning moment was proposed based on three assumptions. A maximum aligning moment method (MAMM) was designed for the estimation of tireroad friction coefficient. The numerical and the experimental results show that the proposed algorithm can be applied for various roads with satisfactory accuracy.
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2013, Vol. 34 
