Connected automated vehicles (CAVs), built upon advanced vehicle control and communication technology, can improve traffic throughput, safety, and energy efficiency. Previous studies on CAVs control focus on instability and stability properties of CAV platoons; however, these analyses cannot reveal the damping platoon oscillation characteristics, which are important for enhancing CAV platoon reliability against variant continuous perturbations. To this end, this research seeks to characterize the damping oscillations of CAVs through exploiting the platoon's unforced oscillatory, i.e., damping behavior. Inspired by the mechanical vibration theory, the proposed approach is applied to a CAV platoon with linear car-following control formulated as Helly'smore »
This content will become publicly available on December 1, 2022
Adaptive Vehicle Platooning with Joint Network-Traffic Approach
The Intelligent Transportation System has become
one of the most globally researched topics, with Connected and
Autonomous Vehicles(CAV) at its core. The CAV applications can
be improved by the study of vehicle platooning immune to realtime
traffic and vehicular network losses. In this work, we explore
the need to integrate the Network model and Platooning system
model for highway environments. The proposed platoon model
is designed to be adaptive in length, providing the node vehicles
to merge and exit. This overcomes the assumption that all the
platoon nodes should have a common source and destination. The
challenges of the existing platoon model, such as relay selection,
acceleration threshold, are addressed for highly modular platoon
design. The presented algorithm for merge and exit events
optimizes the trade-off between network parameters such as
communication range and vehicle dynamic parameters such as
velocity and acceleration threshold. It considers the network
bounds like SINR and link stability and vehicle trajectory
parameters like the duration of the vehicle in the platoon.
This optimizes the traffic throughput while maintaining stability
using the PID controller. The work tries to increase the vehicle
inclusion time in the platoon while preserving the overall traffic
throughput.
- Publication Date:
- NSF-PAR ID:
- 10327379
- Journal Name:
- 2021 IEEE Global Communications Conference (GLOBECOM)
- Page Range or eLocation-ID:
- 1 to 6
- Sponsoring Org:
- National Science Foundation
More Like this
-
-
This paper develops distributed optimization-based, platoon-centered connected and autonomous vehicle (CAV) car-following schemes, motivated by the recent interest in CAV platooning technologies. Various distributed optimization or control schemes have been developed for CAV platooning. However, most existing distributed schemes for platoon centered CAV control require either centralized data processing or centralized computation in at least one step of their schemes, referred to as partially distributed schemes. In this paper, we develop fully distributed optimization based, platoon centered CAV platooning control under the linear vehicle dynamics via the model predictive control approach with a general prediction horizon. These fully distributed schemesmore »
-
The performance of connected and automated vehicle (CAV) platoons, aimed at improving traffic efficiency and safety, depends on vehicle dynamics and communication reliability. However, CAVs are vulnerable to perturbations in vehicular communication. Such endogenous vulnerability can induce oscillatory dynamics to CAVs, leading to the failure of platooning. Differing from previous work on CA V platoon stability, this research exploits CAV platooning vulnerability under periodic perturbation by formulating the oscillatory dynamics as vibrations in a mechanical system. Akin to other mechanical systems, a CAV platoon has its inherent oscillation frequency, exhibiting unique characteristics in a perturbed travel environment. To this end,more »
-
Connected and automated vehicle (CAV) technology is providing urban transportation managers tremendous opportunities for better operation of urban mobility systems. However, there are significant challenges in real-time implementation as the computational time of the corresponding operations optimization model increases exponentially with increasing vehicle numbers. Following the companion paper (Chen et al. 2021), which proposes a novel automated traffic control scheme for isolated intersections, this study proposes a network-level, real-time traffic control framework for CAVs on grid networks. The proposed framework integrates a rhythmic control method with an online routing algorithm to realize collision-free control of all CAVs on a networkmore »
-
Truck platooning is emerging as a promising solution with many economic incentives. However, securely admitting a new vehicle into a platoon is an extremely important yet difficult task. There is no adequate method today for verifying physical arrangements of vehicles within a platoon formation. Specifically, we address the problem of a platoon ghost attack wherein an attacker spoofs presence within a platoon to gain admission and subsequently execute malicious attacks. To address such concerns, we present Convoy, a novel autonomous platoon admission scheme which binds the vehicles' digital certificates to their physical context (i.e., locality). Convoy exploits the findings thatmore »