Optimal Inspection Policy based on Measurement Quality Degradation: Case of Pitot Sensors System
Résumé
In this paper, an inspection policy is proposed for a multi-unit system which is during his mission, is assumed to be irreparable. The system is subject to random deterioration which impacts his measurement accuracy. The proposed approach aims to assess the degradation in such a way to increase the efficiency and the accuracy of the whole system. To control this deterioration, inspections are performed and after which we decide how to compute system measurements. According less importance to measurements given by a component occurs whenever the level of its deterioration reaches a specific level threshold. The objective is to determine an optimal periodic inspection policy which minimizes the average total measurement quality degradation per unit of time in a finite time horizon. Our study is applied to a specific case which is the Pitot sensors system. However, the approach could be generalized for every irreparable multiple-unit system subject to random deterioration. A numerical example is provided to illustrate the proposed inspection model.