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題名 | Computer Simulation Analysis of Automobiles in Acrobatic Sharp Turning=汽車急速調頭特技駕駛之運動分析與模擬 |
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作者姓名(中文) | 葉莒; 侯帝光; 徐敬全; | 書刊名 | 力學 |
卷期 | 12:3 1996.09[民85.09] |
頁次 | 頁329-338 |
分類號 | 332.2 |
關鍵詞 | 汽車急速調頭; 參數分析研究; 4自由度運動模式; 翻覆運動; Arcobatic sharp turning; Parametric study; 4 degree-of-freedom vehicle model; Roll-over; |
語文 | 英文(English) |
中文摘要 | 本論文主要在模擬汽車180度急速調頭特技駕駛下之運動情形及穩定性分析。180 度急速調頭特技駕駛是指汽車行駛至某一特定速度時,技巧性地控制煞車與方向盤,使汽車 後輪打滑將車身做 180 度急速甩尾轉向的運動。 本文以牛頓定律及歐拉方式( Euler Approach )導出具有四個自由度的汽車非線性運動模式, 此四個自由度分別為:前進方向 ( longitudinal )、側向( lateral )、平搖( yaw ),及橫搖( roll )。根據此4 自由度運動模式及利用數值積分方法,以電腦模擬出每個時刻車子的反應,及車子停止之後 的狀態,以分析汽車之運動。 本文研究的重點是探討汽車初速、轉向角( steer angle ) 大小與路面摩擦大小對此特技運動之影響。由模擬結果可以看出,汽車在做急速調頭運動時 ,初速與路面摩擦對於此運動的成功與否具有決定性的影響。在適當的速度下配合較小的轉 向角容易達成此特技運動,而在濕滑路面上急速調頭較在粗糙路面上容易且不易發生翻覆。 |
英文摘要 | In this study, handling characteristics of automobiles in acrobatic 180 ° sharp turning are investigated by computer simulations. Nonlinear equations of motion are derived considering four degrees of freedom including yaw, roll, longitudinal, and lateral motions. The possibility of vehicular roll-over is also included in the derived motion equations, in which one side of wheels may lift off the ground in the sharp turning process. Since the acrobatic sharp turning of a vehicle can be made by steering front wheels and braking rear wheels almost at the same time, influences of steer angles, vehicle speeds, and road conditions are evaluated by a parametric study. The vehicular motions are investigated in details by examining the final yaw angle and whether the vehicle rolls over. It is found that the vehicle can easily perform the sharp turning by applying a small steer angle on a slippery road, and the dangerous roll-over will happen when doing such an acrobatic driving at high speeds on a rough road. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。