基于本体的输送机故障诊断方法

Fault diagnosis method of conveyor based on ontology

针对输送机常见的输送带故障,考虑输送机工作环境的特殊性和输送带作为故障诊断对象的特殊性,提出了基于本体的故障诊断方法。构造了一个面向输送机故障诊断知识表示的三层模型框架,把输送机常见的失速、跑遍、损伤故障用本体表示。将这三种常见的故障与输送机较易发生故障的单元如传输带间建立单元故障知识库,利用已有的知识进行故障分析判断。对某煤炭中转码头输煤系统的钢丝绳芯带式输送机进行故障测试实验。结果表明:该文方法克服了传统输送带故障诊断方法的不足,提高了输送机故障诊断的准确率和输送系统运行可靠性,使输送系统的故障停车和紧急停车事故的发生率下降了76%。

Aiming at ordinary conveyor belt faults,a new fault diagnosis method based on ontology is proposed considering the special working environments of conveyors and the particularity of conveyor belts as fault diagnosis objects. A framework of a three-layer model for revealing the fault diagnosis knowledge of conveyors is constructed,and the conveyors' stall,wandering and damages are showed by using ontology. A unit fault knowledge base is established with the connections of the three familiar diagnoses to the unit such as conveyor belt which is easy to go wrong,and the existing knowledge is used for fault diagnosis. A steel cord conveyor of a coal relay wharf coal conveying system is tested for diagnosis. The results show that the fault diagnosis method proposed here overcomes the deficiencies of traditional diagnosis methods and improves the accuracy of fault diagnosis and decreases the incidence of fault parking and emergency shutdown accidents of the conveying system to 76%.