Research on the braking risk threshold value for fully loaded medium trucks on long downgrade route secions of mountainous highways based on entropy weight method

Xueting Zhao; Liwei Hu

doi:10.1117/12.2683862

14 June 2023 Research on the braking risk threshold value for fully loaded medium trucks on long downgrade route secions of mountainous highways based on entropy weight method

Xueting Zhao, Liwei Hu

Author Affiliations +

Proceedings Volume 12708, 3rd International Conference on Internet of Things and Smart City (IoTSC 2023）; 127082C (2023) https://doi.org/10.1117/12.2683862
Event: 3rd International Conference on Internet of Things and Smart City (IoTSC 2023）, 2023, Chongqing, China

Abstract

The heat fade of fully loaded trucks while braking will readily occur on long downgrade route sections of mountainous highways due to speed-control and continuous braking. If the brake fails, it will lead to serious traffic accidents.In this article, the brake temperature variation process of fully loaded medium trucks was simulated through the bench tests. First, two kinds of single forecasting models were established based on experimental data and regression analysis, and the combination forecasting model of the braking risk of fully loaded medium trucks on the long downgrade route sections was established based on the entropy weight method. At the same time, the regularities of drum brake temperature variations under different initial speeds were analyzed, and the critical temperature value and the maximum critical braking times of the brake failure corresponding to different initial braking speed were obtained. The results show that the higher the initial braking speed is, the higher the failure temperature of the brake; however, the lower the maximum critical braking times of the brake failure are, which shows that the higher the initial braking speed is, the easier it is to reach the failure state. The risk combination forecasting model is more reliable and scientific.

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Xueting Zhao and Liwei Hu "Research on the braking risk threshold value for fully loaded medium trucks on long downgrade route secions of mountainous highways based on entropy weight method", Proc. SPIE 12708, 3rd International Conference on Internet of Things and Smart City (IoTSC 2023）, 127082C (14 June 2023); https://doi.org/10.1117/12.2683862

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KEYWORDS

Failure analysis

Data modeling

Matrices

Temperature metrology

Critical temperature

Safety

Error analysis

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