Dynamic Analysis Method for Fault Propagation Behaviour of Machining Centres

Abstract

Fault propagation behaviour analysis is the basis of fault diagnosis and health maintenance. Traditional fault propagation studies are mostly based on a priori knowledge of a causality model combined with rule-based reasoning, disregarding the limitations of experience and the dynamic characteristics of the system that cause deviations in the identification of critical fault sources. Thus, this paper proposes a dynamic analysis method for fault propagation behaviour of machining centres that combines fault propagation mechanisms with model structure characteristics. This paper uses the design structure matrix (DSM) to establish the fault propagation hierarchy structure model. Considering the correlation of fault time, the fault probability function of a component is obtained and the fault influence degree of nodes are calculated. By introducing the Copula and Coupling degree functions, the fault influence degree of the edges between the same level and different levels are calculated, respectively. This paper constructs a fault propagation intensity model by integrating the edge betweenness and uses it as an index to analyze real-time fault propagation behaviour. Finally, a certain type of machining centre is taken as an example for specific application. This study can provide as a reference for the fault maintenance and reliability growth of a machining centre.

Systems Engineering: Availability and Reliability

“…According to the fault propagation intensity of the components, the critical fault propagation paths and nodes of a machining center can be identified, provide a reference for the fault maintenance and encourage reliability growth of machining centers. This paper [9] demonstrates the effectiveness and practicability of the proposed method through the application of the specific case.…”

“…In production systems maintenance, fault propagation behavior analysis is the basis of fault diagnosis and health maintenance. As presented by Mu et al [9], traditional fault propagation studies are mostly based on a priori knowledge of a causality model combined with rule-based reasoning, disregarding the limitations of experience and the dynamic characteristics of the system that cause deviations in the identification of critical fault sources. Thus, the authors [9] propose a dynamic analysis method for fault propagation behavior of machining centers that combines fault propagation mechanisms with model structure characteristics.…”

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

“…The choice of the fault propagation path is influenced by the structural characteristics of the fault propagation model and the reliability level of the nodes in the network [23]. In combination with the historical fault information of the machining center, the correlation of the fault was analyzed, and the machining center was taken as a complex system.…”

Identification of Key Components of CNC Lathe Based on Dynamic Influence of Fault Propagation

“…When any component of the CNC lathe fails, according to the fault correlation shown in the fault propagation structure diagram of the component, the fault is transmitted to other components associated with it. The criticality importance is used as the value of the efficacy function [34], and the coupling degree function is introduced to calculate dynamic fault impact between components [35]. The calculation equation is expressed in Equation (7):…”