Results 61 to 70 of about 1,029,298 (227)

Stability and ultimate boundedness of solutions to Certain third-order differential equations

, 2010
We employ Lyapunov’s second method to investigate uniform asymptotic stability, ultimate boundedness and uniform ultimate boundedness of solutions to certain third-order non-linear differential equations.
Ademola, T. A., Arawomo, P. O.
core   +1 more source

Energy-Based Trajectory Tracking Control of a Six-DOF Robotic Manipulator Using the Port-Hamiltonian Framework

Machines
Structure-preserving trajectory tracking control for a six-degree-of-freedom robotic manipulator is developed within the port-Hamiltonian framework. Error Hamiltonian is constructed by incorporating configuration and momentum tracking errors into the ...
Zhiheng Lin, Junqi Wang, Xindan Hu, Tong Wang, Weijun Zhou   +4 more
doaj   +1 more source

Boundedness of Solutions

, 2021
This chapter presents the concepts of uniform boundedness, quasiuniform boundedness, and uniform ultimate boundedness in the scenery of generalized ordinary differential equations (ODEs).
Bonotto, Everaldo M., Federson, Márcia, Fernanda Andrade da Silva, Afonso, Suzete M. [UNESP], Toon, Eduard, Suzete M. Afonso, Rogelio Grau, Grau, Rogelio, Mesquita, Jaqueline G., Márcia Federson, Jaqueline G. Mesquita, Da Silva, Fernanda Andrade, Everaldo M. Bonotto, Eduard Toon   +13 more
core   +1 more source

Biomimetic Core–Shell Liposome Nanoparticles Deplete Lipoproteins and Enhance the Purity of Extracellular Vesicles from Human Blood

Advanced Functional Materials, EarlyView.
Lipoprotein‐mimicking nanoparticles (SL‐NPs), comprising Fe3O4@SiO2 cores coated with liposomal bilayers, selectively capture lipoproteins through protein corona formation. The resulting SL‐NP‐lipoprotein complexes can be removed by low‐speed centrifugation, thereby enhancing the purity of small extracellular vesicles (sEVs) isolated from human serum ...
Man‐Di Wang, Andrew J. Perciaccante, David Inman, Bong Hwan Sung, Alissa M. Weaver, Suzanne M. Ponik, Ying Ge, Song Jin   +7 more
wiley   +1 more source

Adaptive Backstepping Tracking Control of Wheeled Mobile Manipulator With Output Constraints

IEEE Access
In this study, an adaptive tracking control scheme with output constraints is proposed for wheeled mobile manipulators. Firstly, a backstepping controller utilizing a time-varying barrier Lyapunov function is proposed to limit the tracking error within ...
Huzhenyu Zhang, Dmitry A. Yudin, Dmitry A. Makarov   +2 more
doaj   +1 more source

Adaptive Fixed-Time Sliding Mode Control for Uncertain Twin-Rotor System with Experimental Validation

Complexity, 2019
This paper proposes an adaptive fixed-time control scheme for twin-rotor systems subject to the inertia uncertainties and external disturbances. First of all, a fixed-time sliding mode surface is constructed and the corresponding controller is developed ...
Linwu Shen, Qiang Chen, Meiling Tao, Xiongxiong He   +3 more
doaj   +1 more source

Hydrogel‐Based 3D‐Printed Anthropomorphic Breast Phantom for Emulating Mechanical and Dielectric Properties of Mammary Tissue. Applications in Microwave Imaging

Advanced Functional Materials, EarlyView.
A 3D‐printable breast phantom is developed using patient‐derived MRI data and hydrogels that replicate the dielectric properties of healthy and cancerous tissues. Mechanical and dielectric characterization confirm its suitability for microwave imaging.
Carlos M. Andreu, Daniel Álvarez Sánchez‐Bayuela, Gianluigi Tiberi, Eliana Canicattì, Agostino Monorchio, Ester Vázquez   +5 more
wiley   +1 more source

Adaptive Dynamic Programming-Based Dynamic Surface Control for Nonlinear Systems With State Constraints and Unmodeled Dynamics

IEEE Access
This paper addresses the optimal control problem for a class of nonlinear systems that present significant challenges due to state constraints, unmodeled dynamics, and a nonstrict feedback structure.
Danfeng Zhu, Qin Wang
doaj   +1 more source

Upcycling Keratin‐Based Textile Waste Into High‐Performance Hybrid Fibers Via Tuning the Interfacial Interactions

Advanced Functional Materials, EarlyView.
Keratin recovered from animal‐hair textile waste is fractionated and blended with cellulose to produce continuously spun hybrid fibers. Selecting the high‐molecular‐weight keratin fraction enables 30 wt.% keratin incorporation while maintaining high strength in dry and wet states.
Mian Zhai, Daniel Van Opdenbosch, Inge Schlapp‐Hackl, Teemu Välisalmi, Markus Linder, Michael Hummel, Wenwen Fang   +6 more
wiley   +1 more source

Robust Adaptive Cooperative Tracking Control for Multi-Train Systems with State Constraints, Collision Avoidance, and Time-Varying Parametric Uncertainties

Machines
This paper investigates cooperative tracking control for virtually coupled multi-train systems subject to nonlinear running resistance, bounded time-varying resistance parameters, state constraints, and actuator saturation.
Yi Huang, Zuguo Chen, Chaoyang Chen, Biao Luo   +3 more
doaj   +1 more source