Fault diagnosis and fault tolerant control for electrified vehicle torque security

Jiyu Zhang, Tianpei Li, A. Amodio, Bilin Aksun-Guvenc, G. Rizzoni
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引用次数: 4

Abstract

Torque security is an important element for future automobile development such as for electric and and hybrid electric vehicles (EV/HEVs). For Drive-by-Wire systems that are commonly used in modern vehicles, pedal position signals are critical for ensuring correct calculation of torque request to the rest of the powertrain. This paper develops a model based fault diagnostic scheme for electrified vehicle powertrain torque security problems, with special focus on pedal position sensor faults. After the design of the diagnostic strategy, a fault tolerant control strategy is proposed to mitigate the effect of the faults. The torque security study is applied to a case study of a prototype vehicle developed by the OSU EcoCAR2 team. The diagnostic and fault tolerant control scheme are tested and validated through Model-in-the-Loop (MIL) and Hardware-in-the-Loop (HIL) simulations.
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电动汽车扭矩安全故障诊断与容错控制
扭矩安全是未来汽车发展的一个重要因素,例如电动汽车和混合动力汽车(EV/ hev)。对于现代车辆中普遍使用的线控驱动系统,踏板位置信号对于确保正确计算动力系统其余部分的扭矩请求至关重要。针对电动汽车动力总成扭矩安全问题,提出了一种基于模型的故障诊断方案,重点研究了踏板位置传感器故障。在诊断策略设计之后,提出了一种容错控制策略来减轻故障的影响。扭矩安全性研究应用于俄勒冈州立大学EcoCAR2团队开发的一辆原型车的案例研究。通过模型在环(MIL)和硬件在环(HIL)仿真对诊断和容错控制方案进行了测试和验证。
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