模糊Petri网在液压提升机液压系统诊断中的应用  

Application of Fuzzy Petri Nets in Hydraulic Hoists System Fault Diagnosis

作　　者：方彪[1] 朱小明[1,2] 杨丽红[1] 

机构地区：[1]上海理工大学机械工程学院,上海200093 [2]上海豪高机电科技有限公司,上海201102

出　　处：《石油矿场机械》2015年第6期68-73,共6页Oil Field Equipment

基　　金：上海市自然科学基金资助项目(12ZR1420600)

摘　　要：为了提高液压提升机的可靠性,基于液压系统故障的模糊性特点,提出了模糊Petri网(FPN)与矩阵结合的建模及推理方法,将Petri网的理论与模糊推理规则有机结合在一起,采用矩阵解决复杂的推理过程,具有高效准确地并行推理能力。通过历史统计的故障案例,建立基于FPN的液压系统的故障诊断模型,利用此方法可以快速、准确地计算出各个库所的可信度,并可以对初始库所重要度进行分析,大幅减少诊断时间。以液压提升机的提升故障为例,验证了该算法的正确性和高效性。To improve the reliability of hydraulic hoists,and then,the modeling and reasoning methods of combining fuzzy Petri nets with matrix operation was proposed based on the fuzzy fea-ture of hydraulic system from hydraulic hoists.It combines the theory of Petri nets and the rules of fuzzy reasoning and solves the complex reasoning,which could do parallel inference efficiently and exactly.The fuzzy Petri net in hydraulic system fault diagnosis modeling was based on histori-cal statistics failure case.It demonstrates that this theory could accomplished calculate the credi-bility of initial database quickly and accurately,besides the method also reduced the diagnosis time after analyzing the initial database.Finally,a hydraulic hoists system was taken as the example to validate the correctness and efficiency of proposed approach.

关 键 词：模糊 PETRI 网 模糊产生规则 故障诊断 液压提升机 

分 类 号：TE923[石油与天然气工程—石油机械设备]