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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
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dc.contributor.advisor | 蘇偉儁(Wei-Jiun Su) | |
dc.contributor.author | Zhen-Ting Lee | en |
dc.contributor.author | 李振廷 | zh_TW |
dc.date.accessioned | 2021-06-17T02:19:03Z | - |
dc.date.available | 2023-08-17 | |
dc.date.copyright | 2020-08-24 | |
dc.date.issued | 2020 | |
dc.date.submitted | 2020-08-19 | |
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dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/68372 | - |
dc.description.abstract | 本研究針對四輪轉向車輛建立模型並進行驗證與分析,對於四輪阿克曼轉向模式的車輛在轉向過程中的轉向性能與穩定性與操控性不足的地方進行改善。首先本研究考慮車輛在各座標軸上的運動並建立車輛動態方程式,並利用Matlab與simulink等分析軟體建立與驗證車輛動態模型,並利用數值分析的方法針對不同轉向路徑,包含J-Turn轉向路徑與車道變換路徑等,調配最佳的後輪轉角輸入、推進力矩輸入、懸吊彈簧剛性等車輛條件,並與原四輪阿克曼轉向模式的車輛輸入進行比較,印證數值分析方法求得的車輛輸入條件能夠改善側滑角響應較大、車身偏擺角速度響應不穩與延遲等問題。在懸吊彈簧剛性調配上,定義評估懸吊穩定度的方式,並分析四輪轉向車輛在統一懸吊彈簧剛性與個別懸吊彈簧剛性調配下的優劣,分析在不同轉向需求的路徑上最佳彈簧剛性調配的模式,並利用數值分析法求得最佳的四輪各自的彈簧剛性。 | zh_TW |
dc.description.abstract | This research analyzes a four-wheel steering car and improves the stability and handling of vehicles with four-wheel Ackerman steering. First, we establish the dynamic equations of the vehicle. Second, we use Matlab and Simulink to build and verify the dynamic model of vehicle. This research uses numerical analysis methods for different steering paths, including J-Turn steering path and single-lane-change path, etc. Third, we adjust the rear wheel angle, suspension spring coefficient and torque. Then, we compare the results with those of four-wheel Ackerman steering. It can be confirmed that the optimized input improves the problems of side slip angle response, unstable and delayed response of the yaw rate. Finally, we evaluate stability of suspension, and adjusts the best spring coefficient of suspension in different car paths by using numerical analysis. | en |
dc.description.provenance | Made available in DSpace on 2021-06-17T02:19:03Z (GMT). No. of bitstreams: 1 U0001-1708202014383700.pdf: 4633867 bytes, checksum: e3d92ee41a9fb72d6cf8ac6ed99721aa (MD5) Previous issue date: 2020 | en |
dc.description.tableofcontents | 口試委員會審定書 i 誌謝…………… ii 中文摘要……….. iii ABSTRACT iv 目錄..... v 圖目錄…………. viii 表目錄………… xii 符號彙整…….. xiii Chapter 1 序論 1 1.1 前言 1 1.2 文獻回顧 1 1.2.1 車輛模型 1 1.2.2 改善車輛的穩定性與操控性 2 1.3 研究動機與方法 6 1.4 論文架構 7 Chapter 2 車輛動態系統理論 8 2.1 車輛座標系統 8 2.2 輪胎模型 9 2.2.1 輪胎座標系統 9 2.3 輪胎轉向力 11 2.3.1 輪胎外傾角 11 2.3.2 輪胎側滑角 12 2.4 四輪阿克曼轉向 16 Chapter 3 車輛動態模型 19 3.1 假設條件 19 3.2 Magic Formula輪胎模型 20 3.3 車輛模型 24 3.4 運動方程式 25 Chapter 4 車輛模型驗證 37 4.1 懸吊模型驗證 37 4.1.1 僅受重力影響懸吊模型比較 39 4.1.2 右後輪受外力下車身發生側傾與俯仰運動時懸吊模型比較 41 4.2 車輛模型驗證 46 4.2.1 車輛模型比較 46 Chapter 5 車輛輸入調配對於四輪轉向的影響 50 5.1 不同轉向模式車輛比較 50 5.2 分析方法與路徑條件 55 5.2.1 Matlab數值分析方法 55 5.2.2 J-Turn路徑模擬 57 5.2.3 車道變換路徑模擬 58 5.3 模擬結果 60 5.3.1 J-Turn路徑模擬結果 60 5.3.2 車道變換路徑模擬結果 68 Chapter 6 懸吊剛性對四輪轉向穩定性的影響 76 6.1 懸吊穩定性評估方法 76 6.2 LTR模擬條件 78 6.3 懸吊剛性調配結果 79 Chapter 7 結論與未來展望 84 7.1 結論 84 7.2 未來展望 86 REFERENCE 87 附錄……………. 89 | |
dc.language.iso | zh-TW | |
dc.title | 四輪車輛動態模型的建立與轉向行為分析 | zh_TW |
dc.title | Development of the Dynamic Model of a Four-wheel Vehicle and Analysis of its Steering Behavior | en |
dc.type | Thesis | |
dc.date.schoolyear | 108-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 劉霆(Tyng Liu),鄭榮和(Jung-Ho Cheng) | |
dc.subject.keyword | 四輪獨立轉向,四輪驅動,懸吊系統,推進力矩調配,彈簧剛性調配,穩定性, | zh_TW |
dc.subject.keyword | four-wheel independent steering,four-wheel driving,suspension,torque velocity,spring coefficient adjustment,stability, | en |
dc.relation.page | 93 | |
dc.identifier.doi | 10.6342/NTU202003749 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2020-08-19 | |
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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