An adaptive estimation method for rollover threshold of heavy-duty vehicles

Abstract

The present invention proposes an adaptive estimation method for the rollover threshold of a heavy-duty vehicle. First, the rollover characterization parameters and factors affecting the rollover threshold are clarified, and a rollover threshold calibration device is built, and then a multi-dimensional test for heavy-duty vehicle actual vehicles is established. Typical rollover scene library, followed by carrying out the rollover threshold calibration test of heavy-duty vehicles in different scenarios, processing the data again and calibrating the value of each body state parameter in the critical state of rollover in different scenarios, and then establishing a rollover threshold suitable for dynamic estimation Finally, the adaptive estimation of the rollover threshold of heavy-duty vehicles is realized based on the neural network. This method uses high-precision sensors to build a rollover threshold calibration device, which can be used in real vehicle tests; summarizes the typical rollover scene library of heavy-duty vehicles, and makes network training samples to train neural networks through real vehicle tests to obtain vehicle speed, vehicle quality and sideways The mapping relationship between the inclination threshold and the lateral acceleration threshold realizes the dynamic estimation of the rollover threshold.

Description

technical field [0001] The invention relates to a method for estimating a rollover threshold, in particular to an adaptive estimation method for a rollover threshold of a heavy-duty vehicle, which belongs to the technical field of vehicle safety. Background technique [0002] In recent years, with the vigorous development of my country's economy, the logistics industry is growing rapidly, and heavy-duty vehicles have gradually become the main force of my country's road transport vehicles. According to the relevant statistical data of the U.S. Highway Traffic Safety Administration, the incidence rate and degree of damage of vehicle rollover accidents rank second in vehicle accidents, especially for heavy-duty vehicles. The higher the frequency, the greater the loss. Therefore, the rollover prevention and control method of heavy-duty vehicles has always been a research hotspot. [0003] Currently, the rollover prevention and control method is based on a fixed rollover thresh...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem that a single fixed rollover threshold is difficult to meet the actual rollover prevention and control requirements of heavy-duty vehicles, the present invention proposes an adaptive estimation method for rollover threshold of heavy-duty vehicles

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