Risk Analysis of Coupling Fault Propagation Based on Meta‐Action for Computerized Numerical Control (CNC) Machine Tool

Chen, Yifan; Zhang, Genbao; Ran, Yan

doi:10.1155/2019/3237254

Cited by 10 publications

(5 citation statements)

References 29 publications

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“…As the foundation and one of the most widely used types of equipment in the equipment manufacturing industry, with the development of artificial intelligence and system automation, the structure of machining center systems has gradually become complex, and the components have become more diverse [1]. The complex coupling relationships between components cause fault propagation to occur frequently, which increases investments in fault diagnosis and equipment maintenance [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

A Comprehensive Evaluation Method of Machining Center Components’ Importance Based on Combined Variable Weight

Luan,

Shen,

Zhang

2024

Mathematics

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The fault transitivity of machining center components causes their fault propagation indexes to demonstrate dynamic time variability, which affects their importance. The method proposed in this study overcomes the biases of existing methods of evaluating the importance of system components, as they are mostly based on single indexes; the fault propagation probability and fault propagation risk are selected to perform a comprehensive evaluation. This study first establishes a network hierarchical structure model for machining center components, and the degree of influence of fault propagation among the components is calculated. On this basis, the improved adjacent spreading paths (ASP) algorithm is used to calculate the fault propagation index of each component; from the two perspectives of fault propagation probability and fault propagation risk, an evaluation mechanism involving the combined variable weight is used to comprehensively evaluate components’ importance. Taking a certain type of machining center as an example, through a comparison with ranking results from other node importance methods, it is verified that the proposed method can more effectively distinguish the differences in the importance of each component, thus illustrating the effectiveness and practical value of this method.

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Section: Introductionmentioning

confidence: 99%

A Comprehensive Evaluation Method of Machining Center Components’ Importance Based on Combined Variable Weight

Luan,

Shen,

Zhang

2024

Mathematics

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“…A CNC machine tool is a complex system with multiple components such as mechanical component, electrical component, hydraulic component and so on [1]. High coupling of the functionality between components provides possibility for fault propagation [2]. Accurate and reasonable fault propagation analysis can provide an important foundation for identifying key fault propagation paths in the system, thus can provide theoretical support for maintenance strategies and fault analysis [3].…”

Section: Introductionmentioning

confidence: 99%

Key fault propagation path identification of CNC machine tools based on maximum occurrence probability

Zhang¹,

Zhou²,

Yang³

et al. 2023

Eksploatacja i Niezawodność – Maintenance and Reliability

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In order to revise the deviation caused by ignoring the dynamic character of fault propagation in traditional fault propagation path identification methods, a method based on the maximum occurrence probability is proposed to identify the key fault propagation path. Occurrence probability of fault propagation path is defined by dynamic importance, dynamic fault propagation probability and fault rate. Taking the fault information of CNC machine tools which subject to Weibull distribution as an example, this method has been proven to be reasonable through comparative analysis. Result shows that the key fault propagation path of CNC machine tools is not unique, but changes with time. Before 1000 hours, key fault propagation path is electrical component (E) to mechanical component (M); after 1000 hours, key fault propagation path is auxiliary component (A) to mechanical component (M). This change should be taken into account when developing maintenance strategies and conducting reliability analysis.

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“…Risk is the possibility of encountering hazards in the future [3][4][5]. Risk evaluation is not only to test, measure, and estimate risks but also to reprocess the results of risk identification.…”

Section: Introductionmentioning

confidence: 99%

Risk Evaluation Method Based on Fault Propagation and Diffusion

Mu,

Zhang,

Zhang

2023

Mathematics

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The high reliability demand of the machining center emphasizes the accuracy of the fault risk evaluation. In the traditional fault risk evaluation research of the machining center, the influence of fault mode is mostly based on subjective recommendation or does not consider the propagation and diffusion of fault, which makes the risk evaluation results different from the real situation. Therefore, this paper presents a framework to evaluate the fault risk for machining center components. A certain type of machining center is considered as a case study. The fault mode frequency ratio of components is calculated by fault mode analysis. The fault rate calculation is conducted based on the Johnson method. Considering that different fault modes have different influences on fault propagation breadth and depth, the hypergraph theory is used to build a hypernetwork model. The propagation and diffusion influence degree are defined to describe the propagation and diffusion process of faults. Then, the comprehensive influence degree of fault mode is calculated. The risk evaluation is realized by considering the component fault rate, fault mode frequency ratio, and the comprehensive influence degree of fault mode. The method proposed in this paper can provide a reference for the formulation of risk strategies for the machining center.

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Risk Analysis of Coupling Fault Propagation Based on Meta‐Action for Computerized Numerical Control (CNC) Machine Tool

Cited by 10 publications

References 29 publications

A Comprehensive Evaluation Method of Machining Center Components’ Importance Based on Combined Variable Weight

A Comprehensive Evaluation Method of Machining Center Components’ Importance Based on Combined Variable Weight

Key fault propagation path identification of CNC machine tools based on maximum occurrence probability

Risk Evaluation Method Based on Fault Propagation and Diffusion

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