Control Strategy Analysis on Preventive Maintenance

Abstract

ABSTRACT

In view of the limitations that the optimal examining item do not have dynamic real-time speciality and can’t reflect the actual state of devices in the traditional preventive maintenance(PM) model of repairable devices, in this paper a real-time control project on the checking rate of PM is proposed based on the state of devices. The differential equations used to describe the dynamic behavior of the system are established, and some performance indexes of maintenance systems including the steady-state availability, and the mean time to failure (MTTF), and as well as the average time of staying in each state are calculated. The control strategy on the checking rate is then proposed and the adaptability and the stability of the corresponding control system are analyzed. The essence of the method is to achieve the expected steady-state behavior by controlling the dynamic behavior of the system, which will ensure reliable completion of the task and reduce the maintenance cost meantime. Researches indicate that the proposed method is very effective to improve the utilization of devices and provide theoretical support for the practical applications.