| PARAMETER IDENTIFICATION FOR A LUGRE MODEL BASED ON STEADY-STATE TIRE CONDITIONS |
| X. D. WU, S. G. ZUO, L. LEI, X. W. YANG, Y. LI |
| Tongji University |
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| ABSTRACT |
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The purpose of this study was to effectively identify parameters for a LuGre friction model based on experimental measures. In earlier work related to this study (Yang et al., 2009), which was based on the characters of polygonal wear (Sueoka and Ryu, 1997), we showed a frictional vibration model for a mass on a moving belt. This model reflected lateral vibrations caused by velocity and toe-in angle. An important aspect of the present study is the improved friction model. A previous friction model, which divided the process into four parts, expressed the sable excited vibration well but failed to reflect the hysteresis loop change when vehicles accelerated or decelerated continuously. A LuGre friction model can solve this problem, but several model parameters must be obtained experimentally. We measured contact width and length of tires as vertical pressure changed; this provided a theoretical basis for apparent stiffness of a unit of tire tread. Based on tire data from Bakker E |
| Key Words:
Tire model, Lugre model, Self-excited vibration, Parameters identification |
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