Article
Engineering, Marine
H. Rong, A. P. Teixeira, C. Guedes Soares
Summary: This study proposes a novel approach to automatically identify ship collision avoidance behavior based on an improved Sliding Window Algorithm. By analyzing ship trajectories and factors such as rudder angle, the approach can accurately detect ship's avoidance behavior. The results demonstrate the feasibility and effectiveness of the proposed method, which can be used in situational awareness systems and ship collision avoidance decision-making.
Article
Multidisciplinary Sciences
Yuxuan Fang, Yiping Yao, Feng Zhu, Kai Chen
Summary: The multi-UAV path planning method based on artificial potential field (APF) has advantages of rapid processing speed and ability to handle dynamic obstacles. However, it lacks consideration of the initial heading constraint of UAVs, resulting in local minimum traps and insufficiently smooth paths. This paper proposes a fixed-wing UAV formation path planning method based on piecewise potential field (PPF) to address these issues. Simulation experiments show that the PPF-based method considers the initial heading limits of UAVs, resulting in considerably smoother paths and the ability to plan multiple UAV tracks without conflicts in complex scenarios.
SCIENTIFIC REPORTS
(2023)
Article
Engineering, Ocean
Cailei Liang, Xianku Zhang, Yutaka Watanabe, Yingjie Deng
Summary: The study improved the A star algorithm for automatic navigation by setting a safety distance, optimizing the planned route, and proposing the MCA algorithm, successfully avoiding various obstacles.
APPLIED OCEAN RESEARCH
(2021)
Article
Engineering, Marine
Yun Li, Haiyu Zhang
Summary: This paper proposes a multi-ship collision avoidance decision method for unmanned surface vehicles (USVs) based on the improved velocity obstacle algorithm, which can handle the situation where the target ship temporarily turns and has an emergency collision avoidance capability, with shorter collision avoidance time and fewer course changes.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Engineering, Marine
Remzi Fiskin, Oguz Atik, Hakki Kisi, Efendi Nasibov, Tor Arne Johansen
Summary: A decision support system was developed to assist ship operators in implementing collision avoidance actions in situations of collision risk. Both qualitative and quantitative methods were used, with variable constraints and scenario inputs determined based on expert interviews.
Article
Engineering, Marine
Hee-Jin Lee, Deuk-Jin Park
Summary: This study analyzed navigator behavior through cognitive science and modeled the navigator decision-making process. The results confirmed that navigators prefer using the rudder based on conventional methods, and identified the significance of episodic memory in navigator decision-making. Additionally, a decision-making model for the relationship between navigators' episodic memory and collision risk assessment was developed.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Engineering, Mechanical
Ti Chen, Yankai Wang, Hao Wen, Junjie Kang
Summary: This paper presents the dynamics modeling, path planning, and controller design for the autonomous assembly of multiple flexible spacecraft. The assumed modes method is adopted to describe the nonlinear dynamic behaviors of the spacecraft equipped with six flexible appendages. The introduction of input shaping technique reduces the vibration caused by the collision-free trajectory from the RRT* algorithm in assembly mission.
NONLINEAR DYNAMICS
(2023)
Article
Computer Science, Interdisciplinary Applications
Henrique Simas, Raffaele Di Gregorio
Summary: Cooperation between robots and machines in the industrial environment has improved solution for manufacturing problems, but also brought new challenges, such as collision avoidance. Strategies for collision avoidance include redundant robots and various methods, including solutions based on polynomial functions.
ROBOTICS AND COMPUTER-INTEGRATED MANUFACTURING
(2021)
Article
Engineering, Aerospace
Zheng Xiang, Wenqi Zhang, Deyang He, Yu Tang
Summary: By establishing a flight performance prediction model and adjusting the time and speed at which aircraft pass through waypoints, conflicts between aircraft can be avoided, and conflict-free trajectory planning can be achieved.
INTERNATIONAL JOURNAL OF AEROSPACE ENGINEERING
(2021)
Article
Automation & Control Systems
Zhixian Liu, Xiaofang Yuan, Zhe Li
Summary: This paper proposes a 3-D path planning system (3DPPS-CRPL) that considers the roll angle and path length, aiming to achieve safer and more efficient path planning by inhibiting the roll angle of the vehicle and optimizing the path length.
JOURNAL OF THE FRANKLIN INSTITUTE-ENGINEERING AND APPLIED MATHEMATICS
(2022)
Review
Engineering, Multidisciplinary
Jinwen Hu, Teng Wang, Haozhe Zhang, Quan Pan, Jiandong Zhang, Zhao Xu
Summary: This paper provides a guide for developing UAV collision avoidance technology by summarizing existing regulations and rules, discussing the mathematical formulation of rule-based collision avoidance methods, and conducting tests and benchmarking.
SCIENCE CHINA-TECHNOLOGICAL SCIENCES
(2023)
Article
Engineering, Electrical & Electronic
Edric John Cruz Nacpil, Zheng Wang, Zhanhong Yan, Tsutomu Kaizuka, Kimihiko Nakano
Summary: The sEMG-controlled steering assistance system, using the Myo armband interface, proved to be a safe alternative for drivers with disabilities such as hemiplegia or unilateral upper limb amputation. It was significantly superior to manual takeover from automated driving and comparable to conventional steering wheel operation in terms of vehicle stability during pedestrian collision avoidance.
IEEE SENSORS JOURNAL
(2021)
Article
Automation & Control Systems
Da Sun, Qianfang Liao
Summary: In this article, a new method for multirobot systems to react to various collision scenarios in real time is proposed. The method is simpler and more convenient compared to existing approaches, with low computational complexity, high accuracy, and no training needed. Experimental results demonstrate the efficacy of the proposed method.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Article
Engineering, Marine
Liang Zhao, Yong Bai, Jeom Kee Paik
Summary: In this study, a novel path planning framework for unmanned surface vehicles (USVs) is proposed, which incorporates multi-objective optimization and a sensory-vector replanning strategy to handle complex and unforeseen oceanic environments. The framework utilizes a nonlinear multi-objective path planning problem that captures the intricate nature of the ocean environment and ship dynamics. An adaptive enhanced non-dominated sorting genetic algorithm (AENSGA-II) is used to solve the optimization problem in constrained dynamics. The framework also includes a seamless interface between global planning and COLREG-compliant replanning mechanism.
Article
Computer Science, Information Systems
Shyam Rauniyar, Donghoon Kim
Summary: The study proposes a decentralized Fuzzy Inference System (FIS)-based algorithm to modulate the desired path of unmanned aerial vehicles (UAVs) for collision avoidance while ensuring continuous motion. The algorithm uses a simplified kinematic guidance model and coordinated turn conditions, and the FIS parameters are optimized using a genetic algorithm. The effectiveness of the algorithm is evaluated through Monte Carlo simulations of multiple conflict scenarios.
