Resumen de Study of real time Dynamic Preventive Maintenance Policy for Deteriorating Production Systems
Chin-Ta Chen, Ming-Han Lin, Ching-Ping Wang, John Yuan
The purpose of this article is to propose a both state and time dependent preventive maintenance policy for a deteriorating system. Using health index integrating the parameters inspected by sensors can generate the real-time equipment operating state. In this research, a discrete time Markovian multi-state deteriorating model is adopted to describe the state transition of equipment. The model also includes (1) the deteriorating of operating states and (2) the aging of transition probabilities；(3) Base on historical data, we can estimate the model parameters （aging factor and initial transition matrix）, and (4) assume that multiple imperfect actions with risk are available. For the practical application of the model, the maintenance time is also taken into consideration. The real time optimal maintenance policy of each operating state can be generated by the rule of the minimum expected total cost per unit time for each cycle during finite time interval. Algorithm and computer code are also listed for industrial application.
