终端区进场交通流广义跟驰行为与复杂相变分析

空中交通流特性分析是空中交通流理论研究的重要内容,是空中交通管理的重要依据。基于终端区交通流混杂动力特征,采用模糊逻辑方法提出了航空器动态期望间隔控制策略,运用"刺激-反射"跟驰理论和局域先到先服务(FCFS)的原则建立了终端区交通流广义跟驰模型,并基于NetLogo构建了终端区交通流多智能体仿真平台,结合广州白云机场(ZGGG)02R跑道进场实例,演析了终端区进场交通系统涌现行为,揭示了交通流的速度、密度和流量3个基本参数之间的相互关系,发掘了空中交通蕴含的自由态、畅行态、亚稳态、伪拥塞态和同步态等5个演变相态,剖析了不同交通组织、间隔标准和流控策略下交通流的相变规律。研究成果可为丰富完善空中交通流理论奠定部分基础,为科学管控空中交通提供重要基础支撑。

Analysis on generalized following behavior and complex phase-transition law of approaching traffic flow in terminal airspace

Air traffic flow''s characteristics analysis is an essential part of air traffic flow theory research and also an important basis of air traffic management. Based on hybrid dynamic characteristics of traffic flow, fuzzy logic method is adopted to present dynamic separation control strategy to reflect controller''s decision behavior; "stimulation-reflection" following theory and local first come first serve (FCFS) rules are used to establish generalized following model of arriving flow in terminal airspace. To deduce and analyze emergence behavior of air traffic system, multi-agent simulation platform is setup using Net Logo tool to simulate the arriving flow of ZGGG 02R. The research reveals the inter-relationship between traffic flow parameters of velocity, density and flow rate, and discovers five phases in arriving air traffic flow evolvement, i.e., free, unconstrained, semi-stable, Pseudo congestion and synchronization, dissects phase transformation under different traffic organizations, separation standards and Miles-in-trail strategies. The outcome of this paper could lay a foundation for air traffic flow theory, which is helpful for the effective control of air traffic.