车故障反翻转控制和硬件在循环验证有线控制的重型车辆
Lufeng Zheng1, Yongjie Lu2,3, Jianxi Wang4
1Department of Mechanical Engineering, Shijiazhuang Tiedao University, Shijiazhuang, 050043, China.
Scientific reports
|November 30, 2024
概括
这项研究引入了X-by-wire车辆的新翻转指数 (NLTR),在电机制动 (EMB) 故障时提高了稳定性. 在关键条件下,NLTR控制器可以提高68.18%的车辆安全性.
科学领域:
- 车辆动力学和控制控制
- 汽车安全工程 汽车安全工程
- 机械电子系统 机械电子系统
背景情况:
- 对于电机制动 (EMB) 故障和反翻转控制的同时故障容忍对于X-by-wire车辆安全至关重要.
- 传统的翻转指数不充分考虑道路刺激对未弹车辆质量的影响.
研究的目的:
- 开发一种新型翻转指数 (NLTR),准确反映制动故障期间的车辆动态.
- 设计一个分层的反翻转控制器,在系统故障时增强横向安全.
- 通过传统方法验证拟议的NLTR指数和控制器的有效性.
主要方法:
- 在考虑单轮车故障的情况下,建立了一个触发车辆翻转动态模型.
- 关于新负载转移率 (NLTR) 翻转指数的建议.
- 一个分层控制器的设计,集成道路粘附识别,滑动模式ABS (SM-ABS) 和差速制动再分配 (DBR) 控制.
- 通过模拟和Hardware-in-the-Loop (HIL) 测试使用NLTR,传统RI2和LTR指标对控制器性能进行比较分析.
主要成果:
- 与传统指数相比,拟议的NLTR指数提供了更准确的翻转风险评估.
- 基于NLTR的控制器在保持车辆稳定方面表现出卓越的性能.
- 传统的指数控制器在极端条件下会出现故障风险.
结论:
- 开发的NLTR指数和层次控制器有效地减轻EMB故障时的翻转风险.
- NLTR控制器显著提高了车辆的稳定性,在鱼条件下实现了68.18%的增强.
- 这项研究通过解决关键的故障耐受性挑战,为X-by-wire车辆的更安全运行做出了贡献.
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