Consideration on Modeling of Chassis Torsional Stiffness around Roll Axis and Analytical Parameter based on Vehicle Dynamics

Ikkei Kobayashi･Fumiya Yoshida･Liting Fu･Yusuke Ebashi･Hayato Yamada･Jumpei Kuroda (Tokai University)･Taro Kato (Tokyo University of Technology)･Ayato Endo (Fukuoka Institute of Technology)･Hideaki Kato･Takayoshi Narita (Tokai University)

Understanding the contribution of chassis torsional stiffness to vehicle dynamics is important for automobiles, which aim to control vehicle dynamics characteristics by suspension stiffness. In this study, a vehicle dynamics model that separates the rigid body of the sprung mass and includes analytical parameters for chassis torsional stiffness is investigated and its effect on lateral dynamics is reported.

Effect of Tire Tread Profile on Cornering Characteristics

Takayuki Toyoshima (Honda Racing)･Eisei Higuchi (Honda R&D)･Toshiaki Matsuzawa･Takeshi Hotaka･Tomonori Sakai (Honda Motor)

The presentation will discuss research into a new method for predicting the effects of changes in tire profile and tread rubber specifications on individual tire cornering characteristics (especially cornering stiffness) with greater accuracy than conventional methods, and the results obtained from this research.

Slip Control of Two-Input Two-Output Torque Vectoring System for Electric Vehicle Considering Turning Trajectory

Ryota Takahashi･Kaoru Sawase･Naoki Takahashi (Mitsubishi Motors)･Hiroyuki Fuse･Hiroshi Fujimoto (The University of Tokyo)

Combine traction performance of like a mechanical defrock and turning performance by the traction and turning trajectory can be controlled slip of the right and left wheels in the sum and difference mode for Two-Input Two-Output Torque Vectoring System for electric vehicles.

Improving Roll Dynamics by Focusing on the Response Difference between Electric Drive Units and Friction Braking Units

Hiromitsu Toyota (The University of Tokyo/Mitsubishi Motors)･Binh-Minh Nguyen･Sakahisa Nagai･Hiroshi Fujimoto (The University of Tokyo)･Kaoru Sawase (Mitsubishi Motors)

In case of prioritizing the performance of planar 3 degrees of freedom motion by driving and braking force control, the roll behavior sometime may worsen depending on the control method.
　Therefore, in this paper, we focus on the response difference between electric drive units and friction braking units, proposing a control method that optimally controls only the driving and braking force of all four wheels to improve roll behavior without deteriorating the performance of planar 3-degree-of-freedom dynamics.

Internal Torque of AWD with Propeller Shaft and its Effect on Vehicle Dynamics

Shinya Konishi (Toyota Motor)

The effect of propeller shaft AWD on vehicle attitude is analysed with a focus on pitch motion. This paper reports the results of the analysis focusing on the internal torque caused by the pitch motion and the vehicle attitude change produced by the change in suspension geometry.

Dynamic Performance Evaluation of a Personal Mobility Vehicle (PMV) with an Inward Tilt Mechanism on Uneven Roads

Tetsuya Kaneko･Junlang Zhou･Shohei Kitazawa (Osaka Sangyo University)･Tetsunori Haraguchi･Ichiro Kageyama (Nihon University)

In this study, we verify the dynamic motion capabilities of the Personal Mobility Vehicle (PMV), which inclines inward during turning. The PMV maintains its upright posture not only during driving on straight roads, slanted roads, and crossing obstacles but also during driving on rutted tracks. Previous studies have examined the static design requirements for this purpose. In this paper, we conduct verification through simulations using a detailed kinematic model of these dynamic motion capabilities.