In order to improve the fault-resilient capacity of the switched reluctance starter/generator systems, this article presents a fault diagnosis and tolerant strategy for position sensors of the system. The fault diagnosis method, based on capturing the pulse edges of the position signals, has very high flexibility and reliability. Moreover, a fault-tolerant control strategy for position sensors is proposed, which can be used in nonuniform variable speed conditions. The principle of the proposed fault-tolerant control strategy is to record three adjacent time intervals, updated in each edge of position signals, and then the fourth time interval can be obtained according to the three adjacent time intervals. In case of position sensors having fault, fault-tolerant control strategy can be realized by reconstructing failure position signals, based on the fourth time interval. Therefore, the system can operate without deterioration of the system performance under the faulty condition of position sensors. Hence, the resilient capability and reliability of switched reluctance starter/generator systems are greatly improved with the proposed fault diagnosis and tolerant control strategy. Experimental results have verified the effectiveness and feasibility of the proposed fault diagnosis and tolerant control strategy.

中文翻译：

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开关磁阻起动机/发电机系统位置传感器故障诊断及容错控制策略

为了提高开关磁阻起动机/发电机系统的故障恢复能力，本文提出了系统位置传感器的故障诊断和容错策略。基于位置信号脉冲边沿的故障诊断方法具有很高的灵活性和可靠性。此外，提出了一种位置传感器的容错控制策略，可用于非均匀变速条件。提出的容错控制策略的原理是记录三个相邻的时间间隔，在位置信号的每个边缘更新，然后根据三个相邻的时间间隔可以得到第四个时间间隔。当位置传感器出现故障时，可以通过重构故障位置信号来实现容错控制策略，基于第四个时间间隔。因此，系统可以在位置传感器出现故障的情况下运行而不会降低系统性能。因此，所提出的故障诊断和容错控制策略大大提高了开关磁阻启动器/发电机系统的弹性能力和可靠性。实验结果验证了所提出的故障诊断和容错控制策略的有效性和可行性。