IEEE Transactions on Systems, Man, and Cybernetics, Part A: Systems and Humans
Optimal Maintenance Policies for a System With Multiechelon Risks
IEEE Transactions on Systems, Man, and Cybernetics, Part A: Systems and Humans
Model-Based Prognostic Techniques Applied to a Suspension System
IEEE Transactions on Systems, Man, and Cybernetics, Part A: Systems and Humans
Optimal maintenance policies for systems subject to a Markovian operating environment
Computers and Industrial Engineering
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This paper presents a sensory-updated degradation-based predictive maintenance policy (herein referred to as the SUDM policy). The proposed maintenance policy utilizes contemporary degradation models that combine component-specific real-time degradation signals, acquired during operation, with degradation and reliability characteristics of the component's population to predict and update the residual life distribution (RLD). By capturing the latest degradation state of the component being monitored, the updating process provides a more accurate of the remaining life. With the aid of a stopping rule, maintenance routines are scheduled based on the most recently updated RLD. The performance of the proposed maintenance policy is evaluated using a simulation model of a simple manufacturing cell. Frequency of unexpected failures and overall maintenance costs are computed and compared with two other benchmark maintenance policies: a reliability-based and a conventional degradation-based maintenance policy (without any sensor-based updating).