車用馬達動力系統之量化可靠度及維護策略分析

Analysis of Quantitative Reliability and Maintenance Strategy for a Motor Power System Used in Vehicles

施博文(Bo-Wun Shih)

指導教授 ： 吳文方

國立臺灣大學/工學院/機械工程學研究所/碩士(2018年)

https://doi.org/10.6342/NTU201800745

摘要

本研究以可靠度觀點分析並探討車用馬達動力系統之維護保養策略，其間，最小壽命週期成本為本論文所重視者。本研究將馬達動力系統拆分為馬達與驅動器兩大部分，各部分又包含若干關鍵部件。我們依可靠度工程原理，對部件、子系統與系統進行量化可靠度分析，以為後續維護策略分析之基礎。其中，針對馬達內之關鍵部件，本研究蒐集諸多國內外文獻，經整理並為必要之分析，獲得它們的可靠度。針對驅動器內之關鍵部件，本研究以美軍可靠度手冊MIL-HDBK-217F為主要參考依據，分析並獲得它們的可靠度。本研究最後經統整，獲得馬達動力系統之可靠度，也將以上分析過程撰寫成一套可靠度評估軟體，提供日後工程師設計馬達及其他機電系統時，快速評估並獲得一量化可靠度指標。在馬達動力系統維護策略分析方面，本研究主要考慮馬達動力系統之維護成本，探討該系統在矯正維護與預防維護兩種不同維護模式下之壽命週期成本。其中，在矯正維護部分，主要考慮最小維修下的維護成本；在預防維護部分，則將維護程度量化，分析不同維護力與不同維護週期下，維護成本的差別。本研究最後比較兩種不同維護模式所能獲得的經濟成效，結果顯示馬達動力系統在短維護週期、輕度預防維護下，可獲得最佳之維護成本。

關鍵字

馬達動力系統 ； 可靠度 ； 壽命預估 ； 維護策略 ； 壽命週期成本

並列摘要

This thesis analyzes and discusses the maintenance strategies of the motor power system used in vehicles from the viewpoint of reliability. The minimum life cycle maintenance cost is considered in particular. In the study, the motor power system is divided into two major subsystems named the motor and the driver. Each subsystem consists of several key components. Based on principles of reliability engineering, quantitative reliability analyses are performed for components, subsystems and system. The results are then used for subsequent maintenance analysis. For those key components of the motor, this study collects numerous domestic and foreign literatures and/or documents to find their quantitative reliabilities. Necessary analyses are carried out therein. For key components of the driver, this study employs primarily the method documented in US MIL-HDBK-217F for reliability prediction of electronic equipment to find their reliabilies. A software package is also developed in parallel with the above analytic procedure. With regard to the optimal maintenance strategy of the motor power system, this study considers the minimum maintenance cost of the system. The life cycle cost of either a corrective maintenance or a preventive maintenance strategy is examined and compared. For corrective maintenance, only the minimum maintenance cost is considered. As for preventive maintenance, the degree of maintenance is considered as well. It is concluded by comparing the minimum maintenance cost of the two different maintenance strategies that preventive maintenance is better than corrective maintenance, and the optimal maintenance strategy is achieved by minor preventive maintenance with a short maintenance period.

並列關鍵字

motor power system ； reliability ； life prediction ； maintenance strategy ； life cycle cost

參考文獻

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