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Remaining useful life (RUL) estimation by monitoring in-situ health of components and systems permits decision-makings in the condition based maintenance policy relying on actual operational states. In this paper, we consider systems subject to competing failures, and determine the remaining useful life distribution at the end of monitoring time. Soft failures consider both the degradation and damage...
Taking account of the influence of common cause failure (CCF) to system reliability, a method for reliability modeling and assessment of a multi-state system with common cause failure based on Bayesian Network (BN) is proposed by using the advantage of uncertainty reasoning and figurative expression of BN. The model is applied to a two-axis positioning mechanism transmission system to demonstrate...
Given the critical role of motion estimation (ME) in a video coder, testing such a module is of priority concern. While focusing on the testing of ME in a video coding system, this work presents an error detection and data recovery (EDDR) design, based on the residue-and-quotient (RQ) code, to embed into ME for video coding testing applications. An error in processing elements (PEs), i.e. key components...
Reliability allocation problems of large systems become easier if the optimization model can be decomposed and solved as a set of smaller, coordinated sub-problems. A hierarchical structure for optimal reliability allocation based on target cascading is proposed in this paper. An example is given to illustrative the method.
Many mechanical components exhibit more than one failure mode; and not all components under study have been exposed to similar operating conditions. For example, components may have been used in different operating environments or there may be differences in design and/or material. In these cases, life time data of components would not fall on a straight line on a Weibull probability paper (WPP),...
Based on Structural Equation Modelling (SEM), service quality, customer satisfaction and customer value which are main factors affecting customer loyalty were selected to build a model of service quality affecting customer loyalty and eight hypothesis were put forward in this paper. Demonstration research was given to check the model and hypothesis. The result showed that service quality is the key...
This paper introduces a proposed model to evaluate the reliability of multi-component degradation systems suffering two kinds of competing failure causes: internal degradation process and damage from external random shocks. The internal degradation is expressed as a random process with respect to working time, and a geometric process is employed to describe cumulative damage caused by external random...
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