Abstract
This paper describes the development of the braking assistance system based on a “G-Vectoring” concept. The present work focuses in particular on “Preview G-Vectoring Control” (PGVC), which is based on the “G-Vectoring Control” (GVC) scheme. In GVC, the longitudinal-acceleration control algorithm is based on the actual lateral jerk. PGVC decelerates a vehicle before it enters a curve, and is based on a new longitudinal-acceleration control algorithm which uses predicted and actual lateral jerk. Using the predicted lateral jerk makes it possible to decelerate the vehicle prior to curve entry. This deceleration can emulate a driver’s deceleration as the vehicle approaches a curve entry. PGVC is based on such deceleration algorithms and enables automatic deceleration similar to the action of a driver. It is thus possible to significantly improve the driver’s feeling when this system is activated. Driving tests with this new control system on snowy-winding course confirmed that the automatic brake control quality improved considerably compared to manual driver control considering both lap time and ride quality. These results indicate that PGVC can be a useful braking assistance system not only to improve the driver’s handling performance but also to reduce the brake-task during driving on winding roads.
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References
Abe, M. (2009). Vehicle Handling Dynamics. Butterworth — Heinemman.
Kondo, M. and Ajimine, A. (1968). Driver’s sight point and dynamics of the driver-vehicle system related to it. Proc. SAE Automotive Engineering Cong., Detroit, MI.
Takahashi, J., Yamakado, M. and Saito, S. (2011). A Study on an Acceleration/Deceleration Model Based on Time Variation of Road Curvature Ahead of a Running Vehicle. FAST-Zero’11.
Takahashi, J., Yamakado, M., Saito, S. and Yokoyama, A. (2012). A hybrid stability-control system: combining direct-yaw-moment control and G-vectoring control. Vehicle System Dynamics 50,6, 847–859.
Yamakado, M., Takahashi, J., Saito, S., Yokoyama, A. and Abe, M. (2010). Improvement in vehicle agility and stability by G-vectoring control. Vehicle System Dynamics, 48, 231–254.
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Takahashi, J., Yamakado, M. & Saito, S. Evaluation of preview G-Vectoring control to decelerate a vehicle prior to entry into a curve. Int.J Automot. Technol. 14, 921–926 (2013). https://doi.org/10.1007/s12239-013-0101-4
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DOI: https://doi.org/10.1007/s12239-013-0101-4