Author(s)

Bocheng Zhu ¹, Qingfeng Xin ¹, Junping Jiang ¹, Liang Wang ¹, Fulu Sun ¹

Affiliation(s)

¹ Zhejiang Geely Holding Group, Chongqing Ruilan Automotive Research Institute Co., Ltd, Chongqing, China

Corresponding Author

Bocheng Zhu

ABSTRACT

The minimum turning diameter is a direct reflection of a vehicle's agility. In research aimed at optimizing control to minimize the turning diameter, the key lies in understanding and adjusting various factors that impact vehicular steering performance. This paper focuses on front-wheel drive electric vehicles, with the primary research emphasis on identifying the optimal hydraulic brake distribution strategy under cornering conditions, targeting enhanced maneuverability. By adopting a control scheme that involves coordinated braking of non-driven wheels, particularly focusing on the outer wheel, simulation analysis reveals that implementing this control strategy can reduce the minimum turning diameter from 10.82 meters to 9.89 meters. Through real-vehicle functional testing, integrating this control strategy into an onebox braking system further demonstrates its effectiveness, decreasing the minimum turning diameter from 10.92 meters to 9.94 meters. The similarity between simulation and real-vehicle test results indicates that this control strategy significantly improves the vehicle's minimum turning diameter, thereby enhancing its maneuverability during turns while ensuring driving safety and handling stability.This finding highlights the potential of advanced braking coordination techniques, specifically targeting non-driven wheels during cornering maneuvers, to achieve tighter turning radii in electric vehicles without compromising safety or dynamic handling. This development holds significant promise for improving overall driving experience and efficiency in urban environments where tight maneuverability is often required.

KEYWORDS

Minimum Turning Diameter; Control Strategy; Brake Hydraulic; Simulation Trials; Real Vehicle Testing

CITE THIS PAPER

Bocheng Zhu, Qingfeng Xin, Junping Jiang, Liang Wang, Fulu Sun, Research on Control Strategies for Improving the Minimum Turning Diameter in Pure Electric Vehicles. Journal of Electrotechnology, Electrical Engineering and Management (2024) Vol. 7: 156-164. DOI: http://dx.doi.org/10.23977/jeeem.2024.070220.

REFERENCES

[1] Zhang Haifeng, Yuan Jing, Zhu Pan, et al. Research on Minimum Turning Diameter Measurement of Automobiles Based on Monocular Vision. China Measurement, 2023, 49(03): 109-113. 
[2] Zhao Xianxin, Yu Junfei, Zhou Xinglin. Analysis and Modification of Calculation Model for Minimum Turning Diameter of Automobiles. China Science and Technology Paper, 2019, 14(10): 1123-1127.
[3] Li Qian, Li Dehai, Zhao Qin, et al. GPS-Based Testing Technique for Minimum Turning Diameter of Automobiles. Highway and Automobile Transportation, 2017, (04): 1-3. 
[4] Song Wentao, Jiao Baolei. Analysis of Control Problems for Minimum Turning Diameter of Vehicles. Enterprise Science and Technology Development, 2016, (06): 69-73.
[5] Sun Chao. Research on Turning Control Algorithm for Autonomous Vehicles at Crossroad in the Vehicle-to-Vehicle Communication Environment. Hefei University of Technology, 2021.  
[6] Bootorabi, F., Haapasalo, J., Smith, E., Haapasalo, H. and Parkkila, S. (2011) Carbonic Anhydrase VII—A Potential Prognostic Marker in Gliomas. Health, 3, 6-12.
[7] Wang Haifeng, Zhang Lei, Shao Wenbin. Discussion on Factors Influencing Turning Diameter and Optimization Solutions. Practical Automobile Technology, 2017, (06): 84-85.

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