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Consideration of Steering Control Method Corresponding to Electric Vehicle Age
ISSN: 0148-7191, e-ISSN: 2688-3627
Published September 13, 2011 by SAE International in United States
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The relation of the front wheel steering angle to the steering wheel angle in electric vehicles is changing due to the “steer-by-wire” method, which is based on an electric signal. With this method, excellent maneuverability is possible in various driving situations. Therefore, this steer control method technique is considered in this study. It was clarified that steer-bywire requires an improvement in the control stability in emergency maneuvers and the delay of counter steering in drift cornering without causing a sense of driver incompatibility. (Here, the sense of incompatibility was defined as feeling by which the harmony between the steer intention of the driver and the vehicle movement was lost.) (Here, the drift cornering shows cornering done in the area with counter steering where the rear wheel exceeded the maximum cornering force.) One control stability method is Proportional Derivative (PD) steering assistance, which is dependent on the anticipated driving situations. In addition, the negative camber angle control that is proportional to the steer angle can improve lateral acceleration in critical cornering. These results clarify that three-dimensional control of the wheel posture angle according to a specific driving situation greatly improves driving stability.
CitationNozaki, H., Makita, M., and Yoshino, T., "Consideration of Steering Control Method Corresponding to Electric Vehicle Age," SAE Technical Paper 2011-01-2150, 2011, https://doi.org/10.4271/2011-01-2150.
- Hirao, O. “On the Steering System which has a Derivative term for the Improvement of the Stability of Anthro-mobile” Journal of Society of Automotive Engineers of Japan (JSAE) 23 1 48 54 1969
- Hirao, O. “Improved Dynamic Characteristics of Automobile Steering System. - Case of an automobile driven by a man -” Journal of Society of Automotive Engineers of Japan (JSAE) 20 11 995 1002 1966
- Nozaki, H. “Effect of Differential Steering Assist on Drift Running Performance,” SAE Technical Paper 2005-01-3472 2005 10.4271/2005-01-3472