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遙測衛星可靠度預估

Remote Sensing Satellite Reliability Prediction

摘要


遙測衛星因為可靠度要求相當高,設計時應具有複雜的備援功能。當進行可靠度預估時,首要了解系統的電路運作模式與關係,依其電路特性推導其對應的可靠度方塊圖。對於可靠度方塊圖中具有備援關係的方塊圖區塊,一般都可以找到對應的可靠度預估數學公式,若無適當的公式,則須自行推導公式。可靠度方塊圖中的每一個方塊圖單元,其內的零件大都是串接關係,故其失效率只須相加零件失效率即可得,再由方塊圖計算得到系統可靠度預估值。本文將描述遙測衛星的可靠度預估過程,作為未來執行衛星或複雜系統的可靠度預估參考。

關鍵字

遙測 衛星 可靠度

並列摘要


Remote Sensing satellite shall be provided with complex redundant functions owing to its high reliability requirement. However, for generating its corresponding reliability block diagrams come from understanding operational scenarios, dependencies between the electrical circuits in the system and following the circuit's characteristics. For a reliability block diagram contained redundant designs, normally the corresponding mathematical formulas of that reliability can be mapped accordingly. If no proper formula for that design can be used, the derivation of the fitting equations is necessary. In the reliability block diagram, most of the internal electrical parts have serial relationships. Hence, a grand total of the failure rates of the electrical parts can retrieve the failure rate in that block unit. Furthermore, to follow the reliability block diagram can evaluate the prediction of system reliability. This paper will describe the processes of reliability prediction in the Remote Sensing satellite system for referring in the future missions or predicting other complex systems.

延伸閱讀


國際替代計量