Article
Energy & Fuels
Jerzy Kisilowski, Elzbieta Kowalik-Adamczyk
Summary: This article introduces a definition of stochastic technical stability and applies it to testing a mathematical model of passenger railroad cars. By conducting tests on the nonlinear mathematical model of passenger cars, the influence of various factors and technical conditions on stability assessment is determined. The research findings can be utilized for assessing the dynamics of electric vehicles.
Article
Engineering, Civil
Junjie Zhang, Guangquan Lu, Haiyang Yu, Yunpeng Wang, Can Yang
Summary: This study investigates the influence of the uncertainty level of vehicle-position information on string stability and car-following safety. The results indicate that negative uncertainty values can improve stability and safety, while positive uncertainty values can reduce delay time and increase safety margins.
IEEE TRANSACTIONS ON INTELLIGENT TRANSPORTATION SYSTEMS
(2022)
Article
Engineering, Marine
Arif Hussain, Adil Loya, Zeeshan Riaz, Saeed Akram Malik
Summary: The maneuverability of the DARPA SUBOFF model with Cruciform and X configurations was studied. Computational Fluid Dynamics (CFD) technique and Rotating Arm test were used to predict the effectiveness of control surfaces. The simulation results showed an error below 15% when compared with experimental results.
Article
Chemistry, Multidisciplinary
Hui Zhang, Huawei Liang, Xiang Tao, Yi Ding, Biao Yu, Rengui Bai
Summary: The paper proposes a hierarchical driving force distribution and control strategy for six-wheel drive skid-steering electric unmanned ground vehicles, utilizing a nine-degrees-of-freedom dynamics model and integral sliding mode control and PID control methods in the upper layer controller. The lower layer controllers adopt a driving force distribution method to allocate torques to the six motors, achieving better vehicle maneuverability and stability.
APPLIED SCIENCES-BASEL
(2021)
Article
Engineering, Marine
Su-Hyung Kim, Chun-Ki Lee, Yang-Bum Chae
Summary: Most fishing vessels have a length between perpendiculars (LBP) of less than 100 meters, not subject to IMO maneuverability standards, but their accidents are 3 to 5 times higher than merchant ships. Research on the maneuverability characteristics of fishing vessels is necessary for safety and potential development of autonomous vessels.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2021)
Article
Mathematics, Interdisciplinary Applications
H. S. Bauomy, A. T. EL-Sayed
Summary: The paper introduces the Negative Derivative Feedback (NDF) controller in a quarter-vehicle car subjected to parametric excitation. The NDF controller is proven to be effective in avoiding dangerous vibrations. The robustness of the controller to natural frequency variation is investigated. The simulation results show that the NDF controller is the best in removing oscillations and decreasing amplitudes.
CHAOS SOLITONS & FRACTALS
(2023)
Article
Engineering, Marine
Chang Shi, Xide Cheng, Zuyuan Liu, Kunyu Han, Penghui Liu, Long Jiang
Summary: This study investigates the mechanism and characteristics of the wave-making wake generated by underwater vehicles in density-stratified fluid during maneuvering motion. As the drift angle increases, the wake of the vehicle continues to exhibit obvious Kelvin wave system characteristics, with increased asymmetry in the surrounding flow field.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Physics, Multidisciplinary
Fang Zong, Meng Wang, Jinjun Tang, Meng Zeng
Summary: This paper introduces a mixed-vehicles car-following model based on FVAD model to describe the behavior of regular vehicles and autonomous vehicles. The model incorporates the influence of multiple front vehicles on the host vehicle using molecular dynamic theory and takes into account drivers' car-following styles. The stability analysis shows that the proposed model has better stability compared to the FVAD model. The model is validated using field test data and shows improved accuracy and smoother acceleration strategy compared to existing models.
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
(2022)
Article
Computer Science, Information Systems
Bingshao Li, Jinsong Zhou, Dao Gong, Taiwen You
Summary: The study focused on the influence of under-chassis equipment parameters and position distributions on the vibration response characteristics of high-speed railway vehicles. An upper envelope was proposed as an evaluation index to analyze the combined effects of equipment suspension frequency, mass, and location arrangement on vehicle body vibration. The results provided a suitable parameter and distribution matching relationship to reduce car body vibrations.
Article
Engineering, Civil
Mingfeng Shang, Benjamin Rosenblad, Raphael Stern
Summary: In this study, an asymmetric car following model for adaptive cruise control (ACC) vehicles is proposed, which switches parameters under different conditions to achieve and replicate the car following dynamics of ACC vehicles. The calibration and simulation results demonstrate that the proposed asymmetric ACC model significantly reduces model spacing error.
IEEE TRANSACTIONS ON INTELLIGENT TRANSPORTATION SYSTEMS
(2022)
Article
Engineering, Civil
Hui Jin, Haiming Hao, Xiaoguang Yang
Summary: This research focuses on the stability of vehicle following dynamics in traffic, finding that vehicles under continuous CFM model usually achieve local stability, while stability in the discrete CFM model depends on reaction time.
IEEE TRANSACTIONS ON INTELLIGENT TRANSPORTATION SYSTEMS
(2022)
Article
Automation & Control Systems
Stefan Loeckel, Siwei Ju, Maximilian Schaller, Peter van Vliet, Jan Peters
Summary: Engineering a high-performance race car involves considering the human driver through real-world tests or simulations. This study aims to understand race driver behavior and develop an adaptive driver model using imitation learning. By identifying adaptation mechanisms and optimizing lap times on new tracks, the framework creates realistic driving lines and improves performance over time.
IEEE TRANSACTIONS ON SYSTEMS MAN CYBERNETICS-SYSTEMS
(2023)
Article
Transportation Science & Technology
Jie Sun, Zuduo Zheng, Anshuman Sharma, Jian Sun
Summary: This study investigates the stability characteristics of human-driven connected vehicles (CV) and extends a recently-developed car-following (CF) model by considering human factors. The results show that the connected environment improves CF stability and reduces traffic congestion, and higher compliance to information benefits traffic flow stability, except in situations with large time delays.
TRANSPORTATION RESEARCH PART C-EMERGING TECHNOLOGIES
(2023)
Article
Engineering, Civil
Hang Zhao, Yongfu Li, Wei Hao, Srinivas Peeta, Yibing Wang
Summary: This study evaluates the effects of different switching periods of communication topologies and delays on the dynamic performance and energy consumption of electric connected vehicle traffic streams, utilizing a communication topology characterization method and a new car-following model. The results demonstrate that these factors impact vehicle interactions and can be explored through stability analysis and simulation experiments.
IEEE TRANSACTIONS ON INTELLIGENT TRANSPORTATION SYSTEMS
(2021)
Article
Engineering, Marine
Su-Hyung Kim, Chun-Ki Lee, Sang-Min Lee
Summary: This study modified the Kijima 90 empirical formula by incorporating characteristic parameters of fishing vessel hull form to improve the accuracy of ship maneuverability estimation.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2021)
