六輪車輛之操控性能分析

Handling Analysis of Six-Wheel Vehicles

張祐祥(You-Hsiang Chang)

指導教授 ： 尤正吉

國立臺北科技大學/機電學院/車輛工程系所/碩士(2006年)

https://doi.org/10.6841/NTUT.2006.00034

摘要

本研究探討六輪車輛之操控性能，首先建構包含車身側滑角、偏轉角速度與車身翻滾角之三自由度運動模型，以四輪車操控特性為基礎觀察六輪車特性曲線，並從時間域與頻率域分別觀察中間軸位置、重心高度、車身側傾剛性係數、翻滾外傾係數與翻滾轉向係數對於六輪車輛操控特性之影響。多輪轉向系統被應用於六輪車輛側滑角為零之控制，所推導之控制策略能有效改善六輪車輛在時間域與頻率域之動態性能，且利用Matlab呈現分析結果。

關鍵字

多輪轉向系統 ； 車身側滑角 ； 偏轉角速度 ； 車身翻滾角

並列摘要

The topic of this paper is to investigate handing performance of six-wheel vehicles by constructing the 3 DOF (Degree Of Freedom) dynamic model which consists of vehicle side-slip angle, yaw rate and roll angle. The handling performance of four-wheel vehicles is employed to compare the characteristic of six-wheel vehicles. Then to analyze how the handling performance of six-wheel vehicles would be affected by changing the middle axle position, the height of center gravity, the total roll stiffness, the wheel camber thrust coefficient and roll steer coefficient respectively at time and frequency domain.
The steering system of multi-axles was applied to achieve zero side-slip angle control, and the developed control strategy was capable of improving the dynamic performance of six-wheel vehicles at time and frequency domain. The goal is to reduce the side-slip angle of six-wheel vehicles and keep the steering characteristics the same as four wheel vehicles. Finally, the analyzed results would be present by the Matlab software.

並列關鍵字

Steering system of multi-axles ； Side-slip angle ； Yaw rate ； Roll angle

參考文獻

[5] A.Y. Lee, "Performance of four-wheel-steering vehicles in lane change maneuvers.", IEEE,1996.

[8] H. Sakai and Y. Satoh, "The impact of roll center height on vehicle dynamic behavior.",JSAE Review ,1994

[9] X. Xia and E. H. Law, "Nonlinear analysis of closed-loop driver / automobile performance with four wheel steering control.", SAE, no.920055 ,1992

[11] Chong, U-sok., Namgoong, Eok., Sul, Seung-Ki., "Torque steering control of 4-wheel drive electric vehicle," SAE 950316,1995.

[12] S. Takano, M. Nagai, T. Taniguchi and T. Hatano, "Study on a vehicle dynamics model for improving roll stability.", JSAE Review 24,2003,Page 149-156