Active safety control for distributed drive electric vehicle with unilateral motor fault based on mechanical redundancy

IF 3.1 3区计算机科学 Q2 AUTOMATION & CONTROL SYSTEMS

Mechatronics Pub Date : 2024-11-06 DOI:10.1016/j.mechatronics.2024.103266

Changan Ren , Lipeng Zhang , Minghan Chen , Yang Zhang , Minghui Zhao

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引用次数: 0

Abstract

Distributed drive can significantly improve the dynamics performance of electric vehicles. However, once the drive motor fails, it will cause harm to passengers and the surrounding environment. To solve the above problems, an active safety control method is proposed based on the mechanical redundancy of a centralized and distributed coupling transmission, which can switch the vehicle drive mode from two motors distributed drive to one motor centralized drive. Regarding fault diagnosis, a motor torque observer is established based on the coupling relationship between the steering system and the drive system to address motor communication faults. To reduce the risk of misdiagnosis, a combined fault diagnosis strategy that considers both torque difference and torque change rate is proposed. The effectiveness of the method is proved by simulation and real vehicle tests. In the aspect of safety control, a fast mode switching method from the distributed drive to the centralized drive is proposed. The test results show that the shift time of the fast mode switching method is reduced by 13 % compared with the traditional switching method, which can reduce the time of power interruption and quickly restore the driving force to ensure the vehicle safety.

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基于机械冗余的分布式驱动电动汽车单侧电机故障主动安全控制系统

分布式驱动可以大大提高电动汽车的动力性能。然而，一旦驱动电机发生故障，将对乘客和周围环境造成危害。为解决上述问题，提出了一种基于集中式和分布式耦合传动机械冗余的主动安全控制方法，可将车辆驱动模式从两个电机分布式驱动切换为一个电机集中式驱动。在故障诊断方面，根据转向系统和驱动系统之间的耦合关系建立了电机扭矩观测器，以解决电机通信故障。为降低误诊风险，提出了一种同时考虑转矩差和转矩变化率的组合故障诊断策略。模拟和实车测试证明了该方法的有效性。在安全控制方面，提出了一种从分布式驱动到集中式驱动的快速模式切换方法。测试结果表明，与传统切换方法相比，快速模式切换方法的切换时间缩短了 13%，可以减少动力中断时间，快速恢复驱动力，确保车辆安全。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Mechatronics 工程技术-工程：电子与电气

CiteScore

5.90

自引率

9.10%

发文量

审稿时长

109 days

期刊介绍： Mechatronics is the synergistic combination of precision mechanical engineering, electronic control and systems thinking in the design of products and manufacturing processes. It relates to the design of systems, devices and products aimed at achieving an optimal balance between basic mechanical structure and its overall control. The purpose of this journal is to provide rapid publication of topical papers featuring practical developments in mechatronics. It will cover a wide range of application areas including consumer product design, instrumentation, manufacturing methods, computer integration and process and device control, and will attract a readership from across the industrial and academic research spectrum. Particular importance will be attached to aspects of innovation in mechatronics design philosophy which illustrate the benefits obtainable by an a priori integration of functionality with embedded microprocessor control. A major item will be the design of machines, devices and systems possessing a degree of computer based intelligence. The journal seeks to publish research progress in this field with an emphasis on the applied rather than the theoretical. It will also serve the dual role of bringing greater recognition to this important area of engineering.