Abstract
This study presents a novel planning approach of lane changing for autonomous vehicles to ensure multi-agent safety and comfortability in riding. First, a risk assessment model, Safety Field, combined with field theory and kinematics model was defined considering the passengers’ subjective feelings to identify the long-term safety trends. Based on the safety field, a new planning algorithm named S algorithm was developed, which was inspired by the A* algorithm. The special grid map, the lists, and the evaluation function designed in the S algorithm enabling its application to complex dynamic situations while considering riding safety and riding comfort. And the proposed path planning method has good scalability that we extend its application scenarios from straight roads to curved roads. Finally, the S algorithm was validated in virtual traffic environments on straight and curved roads, and the results from the test cases demonstrated the effectiveness and scalability of the algorithm.
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Funding
This work was supported by the National Natural Science Foundation of China (51705096), the China Postdoctoral Science Foundation (2018M630348), the Fundamental Research Funds for the Central Universities (HIT.NSRIF.2019076).
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Xiaoxing Lv received her B.E. degree in Vehicle Engineering from Harbin Institute of Technology in 2020. She is currently a master’s candidate at Jilin University, China. Her research interests include decision-making and safety evaluation of intelligent vehicles.
Weihua Li is an assistant professor at the School of Automotive Engineering in Harbin Institute of Technology (Weihai). He received his B.Sc., M.Sc., and Ph.D. degrees in manufacturing engineering of aerospace vehicle in Harbin Institute of Technology, in 2009, 2011, and 2016, respectively. His research interests include dynamics, simulation and teleoperation of wheeled mobile robots.
Jianfeng Wang is a professor at the School of Automotive Engineering in Harbin Institute of Technology (Weihai). He received his Ph.D. degree in mechanical engineering in Harbin Institute of Technology in 2018. His research interests include the design, simulation and control of automotive vehicles.
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Lv, X., Li, W. & Wang, J. Safety-field-based Path Planning Algorithm of Lane Changing for Autonomous Vehicles. Int. J. Control Autom. Syst. 20, 564–576 (2022). https://doi.org/10.1007/s12555-020-0942-3
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DOI: https://doi.org/10.1007/s12555-020-0942-3