Abstract
The class of bi-directional optimal velocity models can describe the bi-directional looking effect that usually exists in the reality and is even enhanced with the development of the connected vehicle technologies. Its combined string stability condition can be obtained through the method of the ring-road based string stability analysis. However, the partial string stability about traffic fluctuation propagated backward or forward was neglected, which will be analyzed in detail in this work by the method of transfer function and its H ∞ norm from the viewpoint of control theory. Then, through comparing the conditions of combined and partial string stabilities, their relationships can make traffic flow be divided into three distinguishable regions, displaying various combined and partial string stability performance. Finally, the numerical experiments verify the theoretical results and find that the final displaying string stability or instability performance results from the accumulated and offset effects of traffic fluctuations propagated from different directions.
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Foundation item: Projects(51108465, 71371192) supported by the National Natural Science Foundation of China; Project(2014M552165) supported by China Postdoctoral Science Foundation; Project(20113187851460) supported by Technology Project of the Ministry of Transport of China
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Zheng, L. Detailed string stability analysis for bi-directional optimal velocity model. J. Cent. South Univ. 22, 1563–1573 (2015). https://doi.org/10.1007/s11771-015-2673-9
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DOI: https://doi.org/10.1007/s11771-015-2673-9