This paper develops a new decision making method for optimal planning of railway maintenance operations using hybrid Model Predictive Control (MPC). A linear dynamic model is used to describe the evolution of the health condition of a segment of the railway track. The hybrid characteristics arise from the three possible control actions: performing no maintenance, performing corrective maintenan...

OBJECTIVES The main goal in this research was comparing two hospitals' maintenance service quality. One of them had a contract service; the other one had an in-house maintenance service. MATERIALS AND METHODS The authors followed the next stages when conducting this research: domain understanding, data characterisation and sample reduction, insight characterisation and building the TAT predic...

This paper deals with a condition-based maintenance policy for continuously degrading system to reduce the excessive environment degradation. This maintenance policy consists on maintaining the system with respect to a given threshold level of degradation. Such a level is measured by sequential inspections. According to statistical knowledge of degradation level, a preventive maintenance action...

Abstract According to the comparative analysis from whole life cycle economic cost accounting, capital investment of preventive maintenance old cement concrete pavement is less than that corrective maintenance. Based on pavement, problem such as anti-sliding noise, how improve driving comfort and stress road panel considering structure are discussed in this paper, recommend a kind noise reducti...

The EU FP7 FastFIX project tackles issues related to remote software maintenance. In order to achieve this, the project considers approaches relying on context elicitation, event correlation, fault-replication and self-healing. Self-healing helps systems return to a normal state after the occurrence of a fault or vulnerability exploitation has been detected. The problem is intuitively appealing...

Maintenance is one of the most critical tasks during the operation of a system. The reason is profound as it has effect on the life extension of its components and provides also a better delivered quality of service. Thus a maintenance policy may increase the reliability, the availability and other performance indicators which are mainly used to measure maintenance efficiency, but it also incre...

CM: Problem Management is a detailed problem management process model to be utilised within corrective maintenance. It has been developed at ABB and evaluated for its industrial relevance within 17 non-ABB organisations. In this paper, we present the evaluation results of CM: Problem Management. Our primary goal is to confirm its industrial relevance. Our secondary goal is to establish current ...

High-voltage motors are one of the most important components in thermal power plants and industrial facilities. However, they often neglected terms preventive maintenance. Maintenance Serbia still takes place according to outdated model maintenance based on fixed time intervals operations - This is why emphasis has be put electrical testing high-voltage order have a better insight into their co...

The goal of this work is determining the periodicity t0 which the preventive maintenance will execute for minimizing the operation cost. This type of preventive change is very used in practice by industrial manufacturing. In this study, we choose the model of block replacement type1: A failed unit is replaced instantaneously at failure. The mathematical model used is based on the Weibull law wi...