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 ENG  Vol.6 No.8 , July 2014
Camber Angle Control Method Corresponding to the Electric Vehicle Age
Abstract: In recent years, the conversion of vehicles to electric power has been accelerating, and if a full conversion to electric power is achieved, further advancements in vehicle kinematic control technology are expected. Therefore, it is thought that kinematic performance in the critical cornering range could be further improved by significantly controlling not only the steering angle but also the camber angle of the tires through the use of electromagnetic actuators. This research focused on a method of ground negative camber angle control that is proportional to the steering angle as a technique to improve maneuverability and stability to support the new era of electric vehicles, and the effectiveness thereof was clarified. As a result, it was found that in the critical cornering range as well, camber angle control can control both the yaw moment and lateral acceleration at the turning limit. It was also confirmed that both stability and the steering effect in the critical cornering range are improved by implementing ground negative camber angle control that is proportional to the steering angle using actuators. Dramatic improvements in cornering limit performance can be achieved by implementing ground negative camber angle control that is proportional to the steering angle.
Cite this paper: Yoshino, T. and Nozaki, H. (2014) Camber Angle Control Method Corresponding to the Electric Vehicle Age. Engineering, 6, 472-484. doi: 10.4236/eng.2014.68049.
References

[1]   Shibahata, Y., Shimada, K. and Tomari, T. (1993) Improvement of Vehicle Maneuverability by Direct Yaw Moment Control. Journal of Society of Automotive Engineers of Japan, 47, 54-60.
http://dx.doi.org/10.1080/00423119308969044

[2]   Shibahata, Y., Kuriki, N. and Mori, A. (1998) Development of Active Torque Transfer System. Journal of Society of Automotive Engineers of Japan, 52, 79-86.

[3]   Shimada, K. and Shibahata, Y. (1994) Analysis of Vehicle Dynamic Characteristics with a β-Yaw Moment Diagram— Comparison of Three Different Active Chassis Control Methods. Transactions of the Society of Automotive Engineers of Japan, 25, 122-127.

[4]   Ohkubo, N., Kano, Y. and Abe, M. (1994) On Direct Yaw Moment Control for Improving Active Safety of Vehicle Handling. Proceedings of Annual Conference of Society of Automotive Engineers of Japan, October 1994, 117-120.

[5]   Arai, M., Imura, S. and Yokoyama, A. (2007) Development of a Motorized Direct Yaw-Moment Control System (1st Report)—Mechanism and Features of a Motorized Direct Yaw-moment Control System. Proceedings of Annual Conference of Society of Automotive Engineers of Japan, May 2007, 13-16.

[6]   Nasu, H., Higasa, H. and Yoshimura, T. (1996) Study on Motion Control of an Experimental Electric Vehicle. Transactions of the Japan Society of Mechanical Engineers C, 62, 976-982.
http://dx.doi.org/10.1299/kikaic.62.976

[7]   Shino, M. and Nagai, M. (2001) Integrated Control of Direct Yaw Moment and Active Steer Angle.Proceedings of Annual Conference of Society of Automotive Engineers of Japan, Yokohama, October 2001, 24-27.

[8]   Takahashi, N., Fujimoto, H., Kamachi, M. and Yoshida, H. (2007) Yaw-Rate Control for Four Wheel Drive Electric Vehicle Based on Yaw-Moment Observer and Cornering Stiffness Estimation. Proceedings of Annual Conference of Society of Automotive Engineers of Japan, Yokohama, May 2007, 5-8.

[9]   Nozaki, H. and Sakai, K. (1989) Quasi-Static Analysis of the Critical Characteristics of Automobiles in High Lateral G Turning. Nissan Technical Review, 26, 1-8.

[10]   Pacejka, H.B. (2012) Tire and Vehicle Dynamics. 3rd Edition, Butterworth-Heinemann, Oxford.

[11]   Abe, M. (1988) On a Vehicle Cornering Characteristics in Acceleration and in Braking (1st Report) Theoretical Analysis and Extended Stability Factor. Journal of Society of Automotive Engineers of Japan, 37, 134-140.
http://dx.doi.org/10.1080/028418501127346846

[12]   Mori, K. (1993) Response Analysis for Four-Wheel-Steering Vehicle to Steering Inputs under Cornering Motion. Transactions of the Japan Society of Mechanical Engineers C, 59, 112-117.
http://dx.doi.org/10.1299/kikaic.59.1080

 
 
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