Welcome to Journal of Automotive Safety and Energy,

Journal of Automotive Safety and Energy ›› 2025, Vol. 16 ›› Issue (5): 707-715.DOI: 10.3969/j.issn.1674-8484.2025.05.005

• Automotive Safety • Previous Articles     Next Articles

Improved secondary prediction algorithm for tripping and non-tripping rollover for rollover warning

TIAN Yang1,4(), LI Xiangpeng1, FAN Yihong2, LI Zhaonan3, LI Liang   

  1. 1. School of Mechanical Engineering, Yanshan University, Qinhuangdao 066000, China
    2. Chery Automobile Co, Ltd, Wuhu 241000, China
    3. School of Vehicle and Mobility, Tsinghua University, Beijing 100084, China
    4. State Key Laboratory of Intelligent Green Vechicle and Mobility, Tsinghua University, Beijing 100084, China
  • Received:2025-05-06 Revised:2025-06-21 Online:2025-10-31 Published:2025-11-10

Abstract:

An improved dual-prediction rollover warning algorithm was proposed with an incorporating New Rollover Indicator (NRI) to accurately identify vehicle roll dynamics and predict rollover risks. The NRI applicable to both trip and non-trip rollovers was derived from a 6-degrees of freedom model. A combined primary-secondary prediction strategy was developed and integrated with the NRI, validated through the Carsim software and the Matlab/Simulink software co-simulation and hardware-in-the-loop tests. The results show that the proposed algorithm improves the vehicle stability with maintaining the prediction accuracy, and reduces the warning activations by 39.5% and 47.3% with decreasing the maximum warning peak time by 77.2% in rollover situations, compared to conventional secondary and primary prediction methods respectively in non-rollover scenarios. Therefore, the NRI implementation enhanced the algorithm's responsiveness to road excitations with expanding its applicability.

Key words: vehicle active safety, rollover warning algorithm, new rollover index (NRI), tripping and non-tripping rollover

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