The Analysis and Improvements of a 2F/1R TTW Using Computer Simulation

• Main Authors: Chih-Hao Wang, 王志豪
• Other Authors: Mau-pi Hsu
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/20777598148926060191

碩士 === 國立臺灣科技大學 === 機械工程系 === 98 === A previously developed 2F/1R tilting three-wheeled vehicle had a difficulty of returning to a vertical riding posture from leaning while in turn. Also, because the original steering mechanism does not comply with the Ackerman principle, it resulted in tire scrub and tread wear. Correcting these problems is thus the first objective of this study. A new steering mechanism constructed with isosceles trapezoid four-bar linkage was successfully developed to solve the above-mentioned problems. Vehicle dynamics software MSC CarSim and the Pro ENGINEER Wildfire 3.0 software were both utilized ahead to help designing the suitable mechanism. Field test rides confirmed the improvement of our modified design. Computer simulation was used to study the dynamic behaviors of the 2F/1R TTW. Cornering speed can be increased either by constraining the maximal leaning angle or by moving the center of gravity forward. Although this type of TTW in general displays a characteristics of over-steering, simulation results showed that moving the center of gravity forward does make it closer to neutral steering.