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Ground validation of manipulator adaptive variable admittance control method for detumbling a space noncooperative satellite.
Sci Rep
January 2025
Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang, 110016, China.
To achieve rapid and stable detumbling of a space noncooperative satellite, an adaptive variable admittance control method for the manipulator is proposed and verified through simulation study and the ground experiment. The control block diagram of the proposed method is presented, and the adaptive variable admittance compliant detumbling control model is established. The proposed controller includes the fixed admittance controller in manipulator task space, the adaptive pose compensator for the grasping point on docking ring, and the damping adaptive regulator based on manipulator joint angular velocity, and the stability is proven by the Lyapunov method.
View Article and Find Full Text PDFTransient chaos and periodic structures in a model of neuronal early afterdepolarization.
Chaos
January 2025
Departamento de Física, Universidade Federal de Santa Catarina, Florianópolis 88040-900, Santa Catarina, Brazil.
The presence of chaos is ubiquitous in mathematical models of neuroscience. In experimental neural systems, chaos was convincingly demonstrated in membranes, neurons, and small networks. However, its effects on the brain have long been debated.
View Article and Find Full Text PDFA systemic approach to identifying sustainable community-based interventions for improving adolescent mental health: a participatory group model building and design protocol.
Health Res Policy Syst
January 2025
University College London, London, United Kingdom.
Background: The deteriorating mental health of children and young people in the United Kingdom poses a challenge that services and policy makers have found difficult to tackle. Kailo responds to this issue with a community-based participatory and systemically informed strategy, perceiving mental health and well-being as a dynamic state shaped by the interplay of broader health determinants. The initiative works to explore, define and implement locally relevant solutions to challenges shaping the mental health and well-being of young people.
View Article and Find Full Text PDFLiquid-Vapor Phase Equilibrium in Molten Aluminum Chloride (AlCl) Enabled by Machine Learning Interatomic Potentials.
J Phys Chem B
January 2025
Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, United States.
Molten salts are promising candidates in numerous clean energy applications, where knowledge of thermophysical properties and vapor pressure across their operating temperature ranges is critical for safe operations. Due to challenges in evaluating these properties using experimental methods, fast and scalable molecular simulations are essential to complement the experimental data. In this study, we developed machine learning interatomic potentials (MLIP) to study the AlCl molten salt across varied thermodynamic conditions ( = 473-613 K and = 2.
View Article and Find Full Text PDFThe droplet dynamics of asymmetrical impingement on moving ridged surface.
J Colloid Interface Sci
January 2025
School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093 China. Electronic address:
Hypothesis: The depth of research into the mechanism of droplet impacting structured surfaces dictates the efficacy of their applications. The impact stress generated when a droplet impacts a surface is a pivotal factor influencing the efficiency of surface applications, ultimately determining the extent of surface wear. Despite the systematic examination of impact force, there remains a scarcity of research on impact stress and its mitigation strategies.
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