Cooperative adaptive bidirectional control of a train platoon for efficient utility and string stability

• Published in: Chinese physics B Vol. 24; no. 9; pp. 161 - 170
• Main Author: 高士根 董海荣 宁滨 Roberts Clive 陈磊 孙绪彬
• Format: Journal Article
• Language: English
• Published: 01.09.2015
• Subjects: Acceleration; Adaptive control; Bidirectional; Estimating; Mathematical models; Stability; Strings; Utilities; 信息定位; 列车; 协同; 双向控制; 字符串; 最小安全距离; 直接自适应控制; 稳定性定理
• ISSN: 1674-1056; 2058-3834; 1741-4199
• DOI: 10.1088/1674-1056/24/9/090506

This paper proposes cooperative adaptive control schemes for a train platoon to improve efficient utility and guarantee string stability. The control schemes are developed based on a bidirectional strategy, i.e., the information of proximal（preceding and following） trains is used in the controller design. Based on available proximal information（prox-info） of location, speed, and acceleration, a direct adaptive control is designed to maintain the tracking interval at the minimum safe distance. Based on available prox-info of location, an observer-based adaptive control is designed to achieve the same target, which alleviates the requirements of equipped sensors to measure prox-info of speed and acceleration. The developed schemes are capable of on-line estimating of the unknown system parameters and stabilizing the closed-loop system, the string stability of train platoon is guaranteed on the basis of Lyapunov stability theorem. Numerical simulation results are presented to verify the effectiveness of the proposed control laws.