Stochastic Models in Reliability Engineering

26 Which Replacement Maintenance Policy Is Better for Multi-State Systems?

Policy T or Policy N?

Wenjie Dong, Sifeng Liu, and Suk Joo Bae

DOI: 10.4324/9780429331527-26

CONTENTS

• 26.1 Introduction
• 26.2 Problem Statement and Some Basic Assumptions
• 26.3 Reliability Evaluation
• 26.4 Optimal Replacement Maintenance Policy
• 26.5 An Illustrative Example
• 26.6 Concluding Remarks
• References

26.1 Introduction

In industrial practice, lots of systems exhibit more than two simple states up and down. Those systems are referred to as multi-state systems (MSSs) (Lisnianski et al., 2010). For example, the electric capacity generated from a power plant ranges from 0 kWh to 1000 kWh and the corresponding speed of a task processing system is recorded from 0/s ...