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String Stability Analysis of Connected Vehicular Systems Based on Car-Following Model
| 题名： | String Stability Analysis of Connected Vehicular Systems Based on Car-Following Model |
| 正文语种： | eng |
| 作者： | Shuqing Li;Yanyan Qin;Zhengbing He |
| 作者单位： | School of Traffic and Transportation Chongqing Jiaotong Univ. Xuefu Rd. 66 Chongqing 400074 China;School of Traffic and Transportation Chongqing Jiaotong Univ. Xuefu Rd. 66 Chongqing 400074 China;Beijing Key Laboratory of Traffic Engineer-ing Beijing Univ. of Technology Pingleyuan 100 Beijing 100024 China |
| 关键词： | String stability; Cooperative adaptive cruise control (CACC); Mixed traffic flow; Car-following model |
| 摘要： | String stability analysis is one of key factors to understanding traffic flow dynamics. Cooperative adaptive cruise control (CACC) vehicles are desired to enhance stability of vehicular flow by monitoring multiple vehicles. From the perspective of mixed traffic, this study proposes a generalized analysis method for CACC feedback gains to achieve stable mixed flow. To deal with this, a random mixed flow is divided into general small platoons, in which one tail CACC monitors multiple vehicles ahead. These general platoons with different lengths are defined as connected vehicular systems. Based on the generalized car-following models, transfer function theory is employed to derive string stability criteria that can keep these connected vehicular systems stable for all possible vehicle speeds. A case study is also carried out to validate usability of the proposed generalized work. The proposed generalized method is applicable to various car-following models and large connected vehicular systems, thereby helping achieving the string stability enhancement of mixed traffic flow. |
| 出版年： | 2021 |
| 期刊名称： | Journal of Transportation Engineering |
| 卷： | 147 |
| 期： | 8 |
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