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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 吳文方 | |
dc.contributor.author | Chang-Shen Lu | en |
dc.contributor.author | 盧長甡 | zh_TW |
dc.date.accessioned | 2021-06-15T11:15:22Z | - |
dc.date.available | 2017-08-23 | |
dc.date.copyright | 2016-08-23 | |
dc.date.issued | 2016 | |
dc.date.submitted | 2016-08-19 | |
dc.identifier.citation | [1] 彭鴻霖,可靠度技術手冊,未正式出版,國家實驗研究院國家太空中心,2003。
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dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/49077 | - |
dc.description.abstract | 本研究考慮馬達動力系統包括定子、轉子、轉軸與軸承四大關鍵組件,據以探討馬達動力系統與組件的量化可靠度。其中,在定子部分,本論文蒐集馬達於不同等級絕緣下之加速試驗資料,再依據阿瑞尼士模型,評估馬達定子在各級絕緣、但正常工作溫度下的壽命分佈與可靠度。在轉子與轉軸部分,本論文探討馬達轉速對可靠度的影響,主要是考慮轉子與轉軸尺寸、材料性質等參數的不確定性,透過有限元素分析,獲得其臨界轉速,而後再結合一階可靠度分析方法,得到轉子與轉軸在不同轉速下之可靠度。在軸承部分,本論文依據文獻資料,探討三種不同軸承的可靠度,並特別聚焦於電動車馬達常用到的滾珠軸承。本論文最後綜合以上分析結果,探討馬達之系統可靠度,並以國內某公司在開發的一顆電動車馬達為計算案例,分析評估它的壽命分佈與可靠度,結果顯示該顆馬達之平均壽命在預期水準以上;本論文同時也透過靈敏度分析發現,在諸多不確定參數中,影響轉子與轉軸臨界轉速最關鍵的參數是嵌入轉子的軸長,因此,若要使馬達轉速安全避開臨界轉速,改變該參數最為有效。 | zh_TW |
dc.description.abstract | A motor system having key components of a stator, a rotor, a shaft and bearings is studied in this thesis. Special attention is paid to the quantitative reliability of the system and its components. With regard to the stator, accelerated life testing data are collected under various accelerated temperatures and insulation levels. The life distributions and reliabilities of the stator under different insulation levels but normal operating temperature are evaluated based on Arrhenius model. For the rotor and shaft, the influence of rotational speed on the reliability of motor is studied. The reliability issue arises from uncertainties of size and material properties of the rotor and shaft, which results in uncertainty of the critical speed and hence the reliability of the motor. Finite element analysis and the first-order reliability method are employed therein. As for bearings, three different kinds of bearing are discussed but special attention is paid to the reliability evaluation of ball bearings which are frequently used in motors of electric vehicles. After investigating the reliability of each key component, the reliability of the motor is discussed from system point of view. A motor at its design stage and to be used for electric vehicles is considered a role model for the above analyses. The result reveals that the mean time to failure of the motor is acceptable. It is also found from sensitivity analysis that the most important parameter that influences the critical speed of the motor is the part of shaft embedded in the rotor. The adjustment of its length would let the motor avoid its critical speeds and increase its reliability significantly. | en |
dc.description.provenance | Made available in DSpace on 2021-06-15T11:15:22Z (GMT). No. of bitstreams: 1 ntu-105-R03522537-1.pdf: 4694006 bytes, checksum: a7337fdf82b032fb0b227464a200db33 (MD5) Previous issue date: 2016 | en |
dc.description.tableofcontents | 誌謝 I
摘要 II ABSTRACT III 目錄 IV 圖目錄 VIII 表目錄 XI 符號說明 XIII 第一章 緒論 1 1.1 研究背景與動機 1 1.2 文獻回顧 1 1.3 研究目的 3 1.4 論文架構 4 第二章 應用理論介紹 5 2.1 感應馬達概述 5 2.2 馬達失效模式探討 6 2.2.1 馬達主要失效組件 6 2.2.2 馬達的主要失效原因 7 2.3 可靠度理論 9 2.3.1 可靠度簡史 9 2.3.2 可靠度定義與簡介 9 2.3.3 可靠度的數學模型 10 2.3.4 連續機率分佈函數 11 2.3.5 機率點圖 17 2.3.6 適配度檢定 19 2.4 迴歸分析 19 2.5 加速壽命試驗 24 2.5.1 加速壽命試驗的理論背景 24 2.5.2 應力加載方式 24 2.5.3 加速試驗模型 26 2.6 轉子動力學 27 2.6.1 轉子動力學的發展和簡介 28 2.6.2 轉子的模態 29 2.6.3 坎貝爾圖 32 2.6.4 臨界轉速 33 2.7 結構可靠度分析 34 2.7.1 功能函數 35 2.7.2 一階二次矩法 35 2.7.3 一階可靠度法 36 2.8 雙變量常態分佈 38 第三章 定子可靠度 43 3.1 繞組絕緣等級 43 3.2 三相感應馬達定子失效分類 44 3.3 定子可靠度分析研究流程 47 3.4 E級絕緣可靠度分析 49 3.4.1 數據來源 49 3.4.2 壽命機率分佈適配度檢定 50 3.4.3 性能參考溫度的可靠度分析 52 3.4.4 壽命與溫度的關係式評估 54 3.5 B級絕緣可靠度分析 56 3.5.1 數據來源 56 3.5.2 壽命機率分佈適配度檢定 57 3.5.3 性能參考溫度的可靠度分析 58 3.5.4 壽命與溫度的關係式評估 64 3.6 F級絕緣可靠度分析 66 3.6.1 數據來源 66 3.6.2 壽命機率分佈適配度檢定 67 3.6.3 性能參考溫度的可靠度分析 67 3.6.4 壽命與溫度的關係式評估 69 3.7 H級絕緣可靠度分析 71 3.7.1 數據來源 71 3.7.2 壽命機率分佈適配度檢定 71 3.7.3 性能參考溫度的可靠度分析 72 3.7.4 馬達定子繞組平均溫度的可靠度分析 73 3.7.5 壽命與溫度的關係式評估 75 第四章 轉子與轉軸可靠度及軸承可靠度 77 4.1 轉子與轉軸不探討對時間的可靠度的原因 77 4.2 轉子與轉軸組件的相對位置 78 4.3 軸承剛度計算與相關參數 79 4.3.1 軸承受力分析 80 4.3.2 軸承參數 80 4.3.3 軸承剛度 81 4.4 轉子、轉軸與軸承相關參數 82 4.5 轉子動力學分析 83 4.5.1 有限元素模型 84 4.5.2 坎貝爾圖與模擬結果 85 4.6 參數靈敏度分析 88 4.7 一階可靠度法 90 4.7.1 系統可靠度模型 91 4.7.2 單失效模型的失效機率 91 4.7.3 兩失效模式的聯合失效機率 93 4.8 轉子與轉軸量化可靠度結果 96 4.8.1 經驗區間等於15%臨界轉速的平均值 96 4.8.2 經驗區間等於10%臨界轉速的平均值 97 4.8.3 經驗區間等於5%臨界轉速的平均值 98 4.8.4 特定轉速下的可靠度 100 4.9 軸承可靠度 101 第五章 電動車馬達可靠度 106 第六章 結論與建議 109 參考文獻 111 | |
dc.language.iso | zh-TW | |
dc.title | 電動車馬達動力系統與關鍵組件之量化可靠度研究 | zh_TW |
dc.title | Quantitative Reliability Study of a Motor System and Its Key Components used in Electric Vehicles | en |
dc.type | Thesis | |
dc.date.schoolyear | 104-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 蔡曜陽,詹魁元 | |
dc.subject.keyword | 馬達,可靠度,加速試驗,壽命預估,臨界轉速, | zh_TW |
dc.subject.keyword | motor,reliability,accelerated life test,life prediction,critical speed, | en |
dc.relation.page | 114 | |
dc.identifier.doi | 10.6342/NTU201603437 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2016-08-21 | |
dc.contributor.author-college | 工學院 | zh_TW |
dc.contributor.author-dept | 機械工程學研究所 | zh_TW |
顯示於系所單位: | 機械工程學系 |
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