分段供电切换传感器的在线故障诊断方法

发布时间：2017-12-28 01:18

本文关键词：分段供电切换传感器的在线故障诊断方法　出处：《国防科技大学学报》2016年06期 　论文类型：期刊论文

【摘要】：分段供电切换传感器是多段直线电机控制系统的重要部件。针对其故障检测与定位的问题,提出一种切换传感器故障的在线诊断方法。对采集的传感器信号数据进行压缩,以提高计算的效率;研究切换传感器信号根据次级运动的变化规律,定义标准信号集合;给出计算传感信号差异度的方法,作为分析信号相似程度的量化指标;将问题表示为基于有向图的搜索问题,并根据问题的特点缩小搜索的范围;由此提出搜索算法,可以根据测量的传感信号时序估计传感系统的状态变迁过程;给出故障定位流程,利用算法估计的结果,根据系统标准信号集合进行故障定位。为了说明算法与预期结果的一致性,给出3个命题并进行证明;通过实验验证了故障诊断方法的有效性。
[Abstract]:The piecewise power supply switching sensor is an important part of the multi section linear motor control system. In view of the problem of fault detection and location, an online diagnosis method for switching sensor fault is proposed. To compress the data collected by the sensor signal, in order to improve the efficiency of computation; research on switching sensor signal according to the variation of the secondary motion, the definition of standard signal collection; method of calculation of sensing signal variation, as a quantitative index of signal analysis of similarity degree; the problem is formulated as a search problem based on directed graph, and narrow the search the range according to the characteristics of the problem; the search algorithm is proposed, according to the sensing signal timing measurement to estimate the state transition process of sensing system; fault location algorithm using the given process, the estimation results, according to the standard signal set for fault location system. In order to illustrate the consistency between the algorithm and the expected results, 3 propositions are given and proved, and the effectiveness of the fault diagnosis method is verified by experiments.
【作者单位】：海军工程大学舰船综合电力技术国防科技重点实验室;
【基金】：国家自然科学基金资助项目(51477178) 国家重点基础研究发展计划资助项目(2013CB035601)
【分类号】：TM359.4
【正文快照】： 采用分段供电的直线电机由于具有能量效率高、适装性好等优点,适合于大能量、长距离的直线运动,多应用于磁悬浮列车[1-3]、磁悬浮发射[4]、垂直运输[5-6]和电磁发射[7-9]等领域。分段供电的控制经常采用“传感器+控制器+切换开关”的模式。例如:文献[3]采用光电传感器检测初级

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