An Optimal Policy for Condition Monitoring Maintenance with Uncertain Repair

Abstract

This paper considers optimal actions for preventive maintenance based on Partially Observable Markov Decision Process which contain uncertain repair after inspection. Futhermore, we study optimal maintenance policies minimizing the expected total discounted cost over an infinite horizon. It is shown that structural property for optimal maintenance policy can be given by a control limit policy, where the number of optimal maintenance policies can be limited to a practical size by considering the state probability in at most six regions.