Results 11 to 20 of about 36,786,045 (343)
IEEE Access, 2021 In this paper, by utilizing fixed-time control technique and a leader-follower control scheme, a three-dimensional (3-D) cooperative guidance law is developed to tackle impact angle constrained simultaneous arrival problem. Firstly, in the line-of-sight (
Mu Lin +4 more
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Fixed-Time Circular Impact-Time Guidance with Look Angle Constraint
Aerospace, 2022 A fixed-time nonlinear circular guidance law that satisfies the impact time constraint is proposed. By utilizing the geometric principle that the length of a circular arc connecting the missile and the target can be analytically calculated, the exact ...
Xiangxiang Li +4 more
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Impact Time Measurement Experiment
Journal of Research in Science and EngineeringA simple experiment with spherical balls of different types and sizes and an ordinary digital weighing machine has been performed with a view to find out an approximate time of impact in each case of collision of each ball with horizontal rigid platform of the weighing machine and has been briefly described along with a basic theoretical discussion.
Ghizlane Baoussy
semanticscholar +4 more sources
A Geometry-Based Guidance Law to Control Impact Time and Angle under Variable Speeds
Mathematics, 2020 To provide a feasible solution for a variable speed unmanned aerial vehicle (UAV) to home on a target with impact time and angle constraints, this paper presents a novel geometry-based guidance law composed of trajectory reshaping and tracking.
Xinghui Yan, Minchi Kuang, Jihong Zhu
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Nonlinear Optimal Guidance for Intercepting Stationary Targets with Impact-Time Constraints [PDF]
Journal of Guidance Control and Dynamics, 2022 This paper is concerned with devising the nonlinear optimal guidance for intercepting a stationary target with a fixed impact time. According to Pontryagin's Maximum Principle (PMP), some optimality conditions for the solutions of the nonlinear optimal ...
Kun Wang +4 more
semanticscholar +1 more source
Impact of “just-in-time” simulation training for COVID-19 pandemic preparedness
The Asia Pacific Scholar, 2022 Introduction: Personal protection in aerosol-generating procedures is an important skill to safely deliver care to patients in the COVID-19 pandemic.
Nicola Ngiam +2 more
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Aerospace, 2022 The problem of three-dimensional impact time control guidance considering field-of-view constraints and time-varying velocity is investigated in this study.
Shuai Ma +3 more
semanticscholar +1 more source
Journal of Public Health in Africa, 2023 Background: The COVID-19 pandemic has seriously impacted access to healthcare facilities across the world, but there is little evidence of how the pandemic influences the use of essential healthcare in the world. Objective: This study aimed to evaluate
Jamal Tikouk +2 more
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Role of offset during drop-on-drop impact dynamics on a superhydrophobic substrate
Results in Surfaces and Interfaces, 2023 Droplet impacting on another deposited droplet (drop-on-drop) is present in various applications. However, the actual impact configuration deviates from completely aligned case.
Ankush Kumar Jaiswal, Sameer Khandekar
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Impact Time Control Cooperative Guidance Law Design Based on Modified Proportional Navigation
Aerospace, 2021 The paper proposes a two-dimensional impact time control cooperative guidance law under constant velocity and a three-dimensional impact time control cooperative guidance law under time-varying velocity, which can both improve the penetration ability and
Jiang Zhanyuan +3 more
semanticscholar +1 more source