Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
Currently, the increase of transport demands along with the limited capacity of the road network have increased traffic congestion in urban and highway scenarios. Technologies such as Cooperative Adaptive Cruise Control (CACC) emerge as efficient solutions. However, a higher level of cooperation among multiple vehicle platoons is needed to improve, effectively, the traffic flow. In this paper, a global solution to merge two platoons is presented. This approach combines: (i) a longitudinal controller based on a feed-back/feed-forward architecture focusing on providing CACC capacities and (ii) hybrid trajectory planning to merge platooning on straight paths. Experiments were performed using Tecnalia's previous basis. These are the AUDRIC modular architecture for automated driving and the highly reliable simulation environment DYNACAR. A simulation test case was conducted using five vehicles, two of them executing the merging and three opening the gap to the upcoming vehicles. The results showed the good performance of both domains, longitudinal and lateral, merging multiple vehicles while ensuring safety and comfort and without propagating speed changes.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8069960 | PMC |
| http://dx.doi.org/10.3390/s21082626 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
4D trajectory lightweight prediction algorithm based on knowledge distillation technique.
Front Neurorobot
August 2025
College of Air Traffic Management, Civil Aviation Flight University of China, Chengdu, China.
Introduction: To address the challenges of current 4D trajectory prediction-specifically, limited multi-factor feature extraction and excessive computational cost-this study develops a lightweight prediction framework tailored for real-time air-traffic management.
Methods: We propose a hybrid RCBAM-TCN-LSTM architecture enhanced with a teacher-student knowledge distillation mechanism. The Residual Convolutional Block Attention Module (RCBAM) serves as the teacher network to extract high-dimensional spatial features via residual structures and channel-spatial attention.
Pseudomonas aeruginosa senses exopolysaccharide trails using type IV pili and adhesins during biofilm formation.
Nat Microbiol
September 2025
Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA, USA.
During early stages of biofilm formation, Pseudomonas aeruginosa (Pa) PAO1 can sense exopolysaccharide (EPS) trails of Psl deposited on a surface by previous Pa cells to detect trajectories of other cells and to orchestrate motility. This sensory signal is transduced into cyclic diGMP second messengers, but no known Psl receptors and adhesins participate in signal transduction. Here, using bacteria-secreted Psl trails, glycopolymer-patterned surfaces, longitudinal cell tracking, second messenger dual reporters and genetic mutations targeting EPS binding and surface twitching, we find that Pa is capable of sensing EPS directly through mutually constitutive interactions between type IV pili (T4P)-powered twitching and specific adhesin-EPS bonds.
View Article and Find Full Text PDFNOTCH signaling orchestrates the inflammatory-fibrotic continuum of macrophages in renal allograft rejection.
Exp Cell Res
September 2025
Organ Transplant Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510080, China; Guangdong Provincial Key Laboratory of Organ Donation and Transplant Immunology, Guangzhou, Guangdong 510080, China. Electronic address:
Background: Chronic rejection is a major cause of long-term kidney allograft failure, characterized by persistent inflammation and progressive fibrosis. Macrophages are central mediators of this process, but their phenotypic heterogeneity and regulatory mechanisms in chronic rejection remain incompletely understood.
Methods: We performed single-cell transcriptomic analysis on renal allograft biopsies from patients with different types of rejection and on a time-course rat model of chronic rejection.
Two-level variable impedance control for internal/External forces tracking of dual-arm manipulators under uncertainties.
ISA Trans
July 2025
Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 130033, China. Electronic address:
Coordinated operation of dual-arm manipulators is essential for enhancing the load capacity and adaptability of robotic systems. However, the precise control of the internal and external forces during the coordinated operation of dual-arm manipulators can pose considerable challenges owing to factors such as force interactions, kinematic constraints, positional inaccuracies, and external disturbances. This study focused on precise force-tracking control for a dual-arm manipulator system in the presence of external disturbances and uncertainties.
View Article and Find Full Text PDFDesign and motion control analysis of a hybrid-powered ankle rehabilitation robot.
Comput Methods Biomech Biomed Engin
September 2025
School of Information Engineering, Shaoguan University, Shaoguan, China.
This study presents a novel hybrid-powered ankle robot actuated from above (ARAA) designed to improve the smoothness and control of multiaxial movements in robot-assisted ankle rehabilitation. Addressing the limitations of existing systems, which often lack precise trajectory tracking and consistent force application, the proposed robot integrates pneumatic muscles for actuation along the X-axis and Y-axis, with a servo motor driving motion in the Z-axis. A PID-based posture controller is implemented to ensure accurate control during training, while a reconfigurable mechanism allows adjustment of motion parameters to accommodate individual physiological differences.
View Article and Find Full Text PDF