Traffic Equations for Fluid Networks with Overflows

Robust measurement-based buffer overflow probability estimators for QoS provisioning and traffic anomaly prediction applicationm

Suitable estimators for a class of Large Deviation approximations of rare event probabilities based on sample realizations of random processes have been proposed in our earlier work. These estimators are expressed as non-linear multi-dimensional optimization problems of a special structure. In this paper, we develop an algorithm to solve these optimization problems very efficiently based on their characteristic structure. After discussing the nature of the objective function and constraint set and their peculiarities, we provide a formal proof that the developed algorithm is guaranteed to alwa…

具有溢出冗余的风险感知城市空中交通网络设计

Risk-aware Urban Air Mobility Network Design with Overflow Redundancy

提出一种具有备用容量的UAM网络设计方法，通过双层双线性优化选择备用起降点位置与容量以最大化预期吞吐量，提升系统灵活性与安全性。

Analysis and Design of Vehicle Platooning Operations on Mixed-Traffic Highways

Platooning of connected and autonomous vehicles (CAVs) has a significant potential for throughput improvement. However, the interaction between CAVs and non-CAVs may limit the practically attainable improvement due to platooning. To better understand and address this limitation, we introduce a new fluid model of mixed-autonomy traffic flow and use this model to analyze and design platoon coordination strategies. We propose tandem-link fluid model that considers randomly arriving platoons sharing highway capacity with non-CAVs. We derive verifiable conditions for stability of the fluid model by…

Constructing Artificial Traffic Fluids by Designing Cruise Controllers

In this paper, we apply a Control Lyapunov Function methodology to design two families of cruise controllers for the two-dimensional movement of autonomous vehicles on lane-free roads using the bicycle kinematic model. The control Lyapunov functions are based on measures of the energy of the system with the kinetic energy expressed in ways similar to Newtonian or relativistic mechanics. The derived feedback laws (cruise controllers) are decentralized, as each vehicle determines its control input based on its own speed and on the relative speeds and distances from adjacent vehicles and from the…

从道路拥堵到支持车辆控制的人工交通流体

From Road Congestion to Vehicle-Control Enabled Artificial Traffic Fluids

本文研究无车道道路自动驾驶车辆的非线性反馈巡航控制器设计，通过类能量控制Lyapunov函数处理约束与分布式全局稳定问题，并连接微观控制与宏观交通流模型以构建人工交通流体。

Heavy-Traffic Optimality of a Stochastic Network under Utility-Maximizing Resource Control

We study a stochastic network that consists of a set of servers processing multiple classes of jobs. Each class of jobs requires a concurrent occupancy of several servers while being processed, and each server is shared among the job classes in a head-of-the-line processor-sharing mechanism. The allocation of the service capacities is a real-time control mechanism: in each network state, the control is the solution to an optimization problem that maximizes a general utility function. Whereas this resource control optimizes in a ``greedy'' fashion, with respect to each state, we establish its a…