Design on Adaptive Fuzzy Observer of Vehicle Side Slip Angle
نویسندگان
چکیده
A novel observer structure for vehicle side slip angle (β ) estimation is proposed, in which a local approximation of the nonlinear tire model is adopted. Fuzzy logic approach is adopted to combine the local observer models so as to deal with the nonlinear nature of vehicle dynamics. The derivation of observer’s state equations and the estimation mechanism is developed. By choosing the membership functions of weighting factors to be dependent on tire slip angle, tire vertical load and road friction coefficient, the proposed observer is adaptive to different running conditions and road friction changing. The effectiveness is verified by simulation studies.
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