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Yuchao Wang, Yinsong Qu, Shiquan Zhao, Ricardo Cajo and Huixuan Fu
In this paper, a solution to the problem of following a curved path for underactuated unmanned surface vehicles (USVs) with unknown sideslip angle and model uncertainties is studied. A novel smooth sliding mode control (SSMC) based on a finite-time exten...
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Mingyao Zhang, Zheping Yan, Jiajia Zhou and Lidong Yue
This paper focuses on the collision-free formation tracking of autonomous underwater vehicles (AUVs) with compound disturbances in complex ocean environments. We propose a novel finite-time extended state observer (FTESO)-based distributed dual closed-lo...
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Dongdong Mu, Yupei Feng, Guofeng Wang, Yunsheng Fan, Yongsheng Zhao and Xiaojie Sun
In order to simultaneously address the issues of ship operating area limitation, unknown time-varying disturbances, immeasurable ship speed, unknown dynamics, and input saturation, this paper investigates the position-constrained ship dynamic positioning...
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Eun-Seok Lee and Byeong-Seok Shin
The extended reality (XR) environment demands high-performance computing and data processing capabilities, while requiring continuous technological development to enable a real-time integration between the physical and virtual worlds for user interaction...
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Feng Jing, Caiwen Ma, Meilin Xie, Fan Wang, Yu Cao and Xiao Fan
In this paper, the finite-time trajectory tracking control problem of a flexible link manipulator (FLM) system with unknown parameters is investigated in joint space. An adaptive nonsingular terminal sliding mode (ANTSM) controller based on an extended s...
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Yanyan Fan, Zhenlin Jin, Xiaoyuan Luo, Shaobao Li and Baosu Guo
In this paper, we study the finite-time formation control problem of uncertain nonholonomic mobile robots following a parameterized path. A path-guided formation control scheme based on an extended state observer is proposed. To compensate for unmeasured...
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Seongpil Cho, Hyungwon Shim and Young-Shik Kim
The conventional proportional derivative (PD) control algorithm with appropriate gain scheduling is generally applied to a dynamic positioning (DP) system. However, finding appropriate gains through gain scheduling makes the DP system more complicated. A...
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Chunyu Song, Xianku Zhang and Guoqing Zhang
This paper carries out marine vehicle maneuverability prediction based on nonlinear innovation. An improved Extended Kalman Filter (EKF) algorithm combined with a forgetting factor is developed by virtue of nonlinear innovation for ship maneuverability u...
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Lu Wang, Changkui Xu and Jianhua Cheng
This paper proposes a finite-time output feedback methodology for the path-following task of marine surface vessels. First, a horizontal path-following model is established with unknown sideslip angle, unmeasured system state and system uncertainties. A ...
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Laura Sokal, Alina Wilson
Pág. 28 - 62
Extended testing time accommodation (ETTA) is the most common accommodation assigned to post-secondary students with disabilities. We examined data on the processes of providing and monitoring the use of ETTA at 48 Canadian post-secondary institutions wh...
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Ghassan Atmeh and Kamesh Subbarao
This paper deals with the control of lighter-than-air vehicles, more specifically the design of an integrated guidance, navigation and control (GNC) scheme that is capable of navigating an airship through a series of constant-altitude, planar waypoints. ...
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Ghassan Atmeh and Kamesh Subbarao
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Laura Sokal, Alina Wilson
Pág. 28 - 62
Extended testing time accommodation (ETTA) is the most common accommodation assigned to post-secondary students with disabilities. We examined data on the processes of providing and monitoring the use of ETTA at 48 Canadian post-secondary institutions wh...
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Guofang Chen, Yihui Liu, Ziyang Zhang and Yufei Xu
Considering intense hydrothermal activities and rugged topography in a near-bottom environment of the trans-Atlantic geotraverse (TAG) hydrothermal mound, a small autonomous underwater vehicle (S-AUV) will suffer from time-varying disturbances, model unc...
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Zhiping He, Guofeng Wang, Yunsheng Fan and Shuanghu Qiao
This paper studies the fast finite-time path following of underactuated unmanned surface vehicles (USV) with sideslip compensation, time-varying disturbances and input saturation. In the guidance module, the fast finite-time predictor-based line-of-sight...
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Elham Salari, Mohsen Peyghambarzadeh, Mohammad Mohsen Sarafraz, Faramarz Hormozi
Pág. 252 - 258
This paper focuses on the thermal performance of alumina nano-fluids during the quenching process of a surface at the boiling condition, which can be a good answer to the controversial results available in the nano-fluid related literature. For this purp...
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Yibo Zhang, Hao Sun, Fanhang Zhang, Baohua Zhang, Shutian Tao, Haitao Li, Kaijie Qi, Shaoling Zhang, Seishi Ninomiya and Yue Mu
To realize autonomous navigation and intelligent management in orchards, vehicles require real-time positioning and globally consistent mapping of surroundings with sufficient information. However, the unstructured and unstable characteristics of orchard...
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Thomas Lemmerz, Stefan Herlé and Jörg Blankenbach
The availability of spatial and spatiotemporal big data is increasing rapidly. Spatially and temporally high resolved data are especially gathered via the Internet of Things. This data can often be accessed as data streams that push new data tuples conti...
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Thomas Lemmerz, Stefan Herlé and Jörg Blankenbach
The availability of geodata with high spatial and temporal resolution is increasing steadily. Often, these data are continuously generated by distributed sensor networks and provided as geodata streams. Geostatistical analysis methods, such as spatiotemp...
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Yanwen Liu, Zongyi He and Xia Zhou
Clarifying the regional transmission mechanism of COVID-19 has practical significance for effective protection. Taking 103 county-level regions of Hubei Province as an example, and taking the fastest-spreading stage of COVID-19, which lasted from 29 Janu...
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