Work

Car Platooning String Stability Analysis for Automatic Longitudinal Control in Automated Highway Systems

Year: 2025

Type: article

Abstract: Forming car platoons and managing them through automation allows cars to travel with shorter gaps, which contributes to increasing road throughput, lowering fuel use, and cutting emissions. However, minimizing inter-vehicle spacing must comply with the principle of string stability. This paper introduces a Linear Quadratic Integral Regulator (LQIR) tailored for the Adaptive Cruise Control strategy within a platoon of cars. The regulator integrates two additional states to guarantee both effective tracking and preservation of string stability. Furthermore, a heuristic procedure is proposed to select the Constant Time Headway Policy (CTHP) as a means of achieving stability. The selection routine combines an examination of the magnitude frequency response with an inspection of the pole–zero distribution of the spacing-error transfer function between successive cars. Using this approach, a comparative investigation is carried out for two autonomous Adaptive Cruise Control architectures: one based on absolute position feedback and another on measured inter-vehicle distance.

Source: The Archives of Automotive Engineering/ Archiwum Motoryzacji

DOI: 10.14669/am/210423

Authors: Lich Duc Luu, Nguyen Huu Hieu, Quoc Thai Pham, Ngo Sy Dong

Institutions: University of Da Nang, University of Science and Technology - The University of Da Nang, Electric Power University

Language: English

Topic: Traffic control and management

Subfield: Control and Systems Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Industry, innovation and infrastructure

Open Access status: hybrid

OpenAlex ID: W4414617858