臺灣博碩士論文加值系統

本研究針對一電動中型巴士之無離合器自動手排變速箱進行換檔同步性能與控制策略之研究，針對已設計完成之變速箱進行設計改良，然後利用改良後之架構制定出一套換檔同步策略。本研究內容主要包含整車縱向動態、變速箱傳動系統、同步器關鍵參數與作動流程分析與建模，並利用Matlab模擬軟體針對自動手排變速箱系統於換檔時模擬以同步器單獨同步及同步策略兩種方式進行換檔同步，並分析於換檔同步過程中，整車縱向動態的變化和同步器所做的摩擦功。利用所分析之整車縱向動態、變速箱傳動系統與同步器動態，模擬出自動手排變速箱換檔以同步器單獨同步控制和同步策略之整車動態變化與同步器摩擦功並進行比較。比較結果顯示於本研究之變速箱系統結構，利用本研究所提出的同步策略比起利用現有系統架構之同步器單獨同步控制之方法，升檔同步時間最大縮短了0.6秒，同步器個別最大累積摩擦功降低了將近20%。這樣的結果除了提升變速箱換檔性能，也改善了同步器使用壽命。未來可針對同步策略制定一套完整的控制邏輯，進行最佳化設計與控制，達到更好的換檔效能與品質。另外可架設動力實驗平台進行實驗以驗證本研究之同步策略之可行性。

In this thesis, a new gear-shift control strategy for an electric bus clutch-less automated manual transmission (AMT) is studied. This control method is developed for improving gear-shift efficiency and reduces total friction work of the synchronizer during the gear-shift. The dynamic of the driveline is described and the operation details of synchronizer are studied. A new layout of the transmission is modified from a conventional AMT showed in this thesis that enables to control an adjacent gear-shift actuator independently at the same time. This modified AMT could apply the new gear-shift control strategy. Simulation results have demonstrated that synchronous time and total friction work of the synchronizer are reduced during gear-shift with the new gear-shift control strategy. The optimizations of transmission system design and control strategy are necessary to achieve better performance of the gear-shift efficiency. In the future, an experimental test rig is required to verify the feasibility of the new gear-shift control strategy.

摘要 I
Abstract II
謝誌 III
目錄 IV
表目錄 V
圖目錄 VII
第一章 緒論 1
1.1研究背景與動機 1
1.2文獻回顧 1
1.2.1自動手排變速箱 2
1.2.2同步器 3
1.2.3無縫換檔 6
1.3研究方法 8
第二章 自動手排變速系統 9
2.1自動手排變速箱 9
2.1.1自動手排變速箱架構 9
2.1.2換檔同步策略自動手排變速箱架構 10
2.2換檔致動器 11
2.3同步器之介紹 13
2.3.1雙錐面式同步器組件 13
2.3.2同步器基本作動原理與流程 15
第三章 系統模型 20
3.1系統建模與模擬之考量要素 20
3.2整車縱向動態建模 21
3.3傳動系統動態建模 22
3.4同步器系統動態建模 25
第四章 換檔同步控制策略與模擬結果 36
4.1換檔控制程序之制定 36
4.1.1原有換檔同步控制對整車動態之分析 36
4.1.2整車模擬架構 38
4.2換檔單獨同步控制模擬結果 43
4.3制定換檔同步策略 48
4.4換檔同步策略之模擬結果 51
4.5.1 換檔軸向力與轉差變化比較 54
4.5.2 換檔品質之比較 55
第五章 結論與建議 61
參考文獻 62
作者簡介 64

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