METHOD OF ADAPTIVE ESTIMATION OF ADHESION COEFFICIENT OF VEHICLE ROAD SURFACE CONSIDERING COMPLEX EXCITATION CONDITIONS

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METHOD OF ADAPTIVE ESTIMATION OF ADHESION COEFFICIENT OF VEHICLE ROAD SURFACE CONSIDERING COMPLEX EXCITATION CONDITIONS

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LENG BO / JIN DA / YANG XING / XIONG LU / YU ZHUOPING

A method for adaptive estimation of a road surface adhesion coefficient for a vehicle with complex excitation conditions taken into consideration comprises the following steps: 1) designing an estimator according to a single-wheel dynamics model of a vehicle, and estimating a longitudinal tire force and a road surface peak adhesion coefficient under longitudinal excitation; 2) designing an estimator according to a two-degree-of-freedom kinematic model of the vehicle, and estimating a tire aligning moment and a road surface peak adhesion coefficient under excitation of a lateral force; and 3) determining an excitation condition met by the vehicle according to a vehicle state parameter, performing fuzzy inference to obtain limits achievable by current longitudinal and lateral tire forces, and designing a fusion observer to fuse estimation results. The method achieves favorable robustness, improves real-time capability, and can be performed quickly and accurately.

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Title :

METHOD OF ADAPTIVE ESTIMATION OF ADHESION COEFFICIENT OF VEHICLE ROAD SURFACE CONSIDERING COMPLEX EXCITATION CONDITIONS

Contributors:

LENG BO (author) / JIN DA (author) / YANG XING (author) / XIONG LU (author) / YU ZHUOPING (author)

Publication date :

2022-10-20

Type of media :

Patent

Type of material :

Electronic Resource

Language :

English

Classification :

IPC:

B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / G06K Erkennen von Daten , RECOGNITION OF DATA