| 基于Petri网的机械系统诊断传感器优化配置 |
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| 引用本文： | 张博,窦丽华,马韬,李鹏.基于Petri网的机械系统诊断传感器优化配置[J].辽宁工程技术大学学报(自然科学版),2011,30(2):258-262. |
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| 作者姓名： | 张博 窦丽华 马韬 李鹏 |
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| 作者单位： | 北京理工大学,自动化学院,北京,100081 |
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| 基金项目： | 北京市教育委员会共建项目专项资助(HK100070532) |
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| 摘 要： | 针对如何在机械加工系统中设置最少传感器以观测所有故障变迁激发的问题,提出一种改进的Petri网模型和可辨识性(Identifiability)概念,建立了离散事件系统的故障诊断模型。基于该模型,利用图论方法开发了机械系统诊断传感器优化配置算法。此算法不依赖于系统的初始标识,仅与PN模型的图形拓扑结构有关,在已知系统模型的条件下,可以计算系统所需的最少传感器数量及其配置方案,最后以一实例证明了此方法的有效性。
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| 关 键 词： | 机械加工系统 故障诊断 Petri网 传感器 故障变迁 |
Optimal configuration of diagnostic sensors in manufacturing system based on Petri net |
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| ZHANG Bo,DOU Lihua,MA Tao,LI Peng.Optimal configuration of diagnostic sensors in manufacturing system based on Petri net[J].Journal of Liaoning Technical University (Natural Science Edition),2011,30(2):258-262. |
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| Authors: | ZHANG Bo DOU Lihua MA Tao LI Peng |
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| Institution: | ZHANG Bo,DOU Lihua,MA Tao,LI Peng(School of Automation,Beijing Institute of Technology,Beijing,100081,China) |
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| Abstract: | There is an optimal solution for assigning less sensors to a manufacturing system and observing the firing of all faulty transitions.A modified Petri net model and the definition of identifiability are proposed to model the discrete event system(DES).Based on the PN model and the graph theory,a diagnostic sensor optimal algorithm is developed in this study.The algorithm depends on the topology of the PN model,not the Petri net initial markings.Given the PN model,the minimum number of sensors required and th... |
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| Keywords: | manufacturing system fault diagnosis Petri net sensor faulty transition |
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