Non-linear dynamic characteristic monitoring system and method of vehicle tyre

Abstract

The invention discloses non-linear dynamic characteristic monitoring system and method of a vehicle tyre. The system comprises an acceleration sensor, a gyroscope sensor, a tyre air pressure sensor, a tyre temperature sensor, a tyre rotation speed sensor, a vehicle speed sensor, a communication module, an information processing module, a learning module and a learning knowledge base module. The method comprises the following steps of: collecting signals obtained by a plurality of sensors by the communication module, and compiling, converting and storing data through the information processing module; dividing the data of the sensor into a parameter, an independent variable and a dependent variable through the information processing module, and uploading the parameter into the learning module; operating an improved genetic algorithm by the learning module to carry out parameter identification on a tyre nerve network model and describing the dynamic property of the tyre; finally uploading the independent variable data to the learning module through the information processing module, and calculating a dependent variable value by the learning module according to a pre-established dynamic property model; and storing the dependent variable value into the learning knowledge base module and simultaneously extracting useful information to other systems of the vehicle to share by the communication module.

Description

technical field [0001] The present invention relates to systems and methods for determining non-linear dynamic characteristic monitoring acting on vehicle tires. Background technique [0002] With the development of electronic technology, chassis integrated control technology has become a research hotspot, and tires determine the control accuracy and overall performance of the entire system. Tires are composed of multiple materials, with complex structures and strong nonlinearities. Therefore, the modeling process for establishing a tire mechanical characteristic model is usually complicated, with a long period, and the model accuracy is controlled by the selected model form and basis function form. . [0003] So far, the research on tire steady-state characteristics has been basically mature, which can meet the requirements of vehicle dynamic performance simulation. In contrast, the research on the unsteady tire model is still incomplete, most of the theoretical research ...

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Problems solved by technology

[0005] The main purpose of the present invention is to provide a system and method, by which the dynamic characteristics acting

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