Results 41 to 50 of about 76,325,888 (260)

Input-to-State Stability of Nonlinear Switched Systems via Lyapunov Method Involving Indefinite Derivative

Complexity, 2018
This paper studies the input-to-state stability (ISS) of nonlinear switched systems. By using Lyapunov method involving indefinite derivative and average dwell-time (ADT) method, some sufficient conditions for ISS are obtained.
Peng Li, Xiaodi Li, Jinde Cao
doaj   +1 more source

2D Co‐Assembly of Solid Acids Enables Stable Superprotonic Conduction Above 260°C

Advanced Functional Materials, EarlyView.
A two‐dimensional co‐assembly strategy integrates antimony phosphate and phosphotungstic acid nanosheets into free‐standing inorganic lamellar membranes with confined acid–acid interfaces. The resulting interfacial hydrogen‐bond network enables anhydrous proton conductivity exceeding 0.1 S cm−1 at 260°C and supports stable high‐temperature fuel‐cell ...
Qiuning Li, Kaiqiang He, Dehua Dong, Fanmengjing Wang, Xiangcheng Liu, Zhikao Li, Jacek J. Jasieniak, Paul A. Webley, Huanting Wang   +8 more
wiley   +1 more source

Further input-to-state stability subtleties for discrete-time systems [PDF]

, 2010
This paper considers input-to-state stability (ISS) analysis of discrete-time systems using continuous Lyapunov functions. The contributions are as follows.
Lazar, M Mircea, A.R. Teel, Teel, A.R., Heemels, W.P.M.H., W.P.M.H. Heemels, M. Lazar, Lazar, M., Heemels, WPMH Maurice, Teel, AR   +8 more
core   +3 more sources

Input-to-state stability and interconnections of discontinuous dynamical systems [PDF]

, 2007
In this paper we will extend the input-to-state stability (ISS) framework to continuous-time discontinuous dynamical systems (DDS) adopting piecewise smooth ISS Lyapunov functions.
Weiland, S Siep, Heemels, W.P.M.H., Heemels, WPMH Maurice, Weiland, S.   +3 more
core   +2 more sources

Bulk‐Like Spin Cycloid and Fast Switching in Freestanding BiFeO3

Advanced Functional Materials, EarlyView.
Freestanding BiFeO3 membranes overcome substrate‐induced constraints by simultaneously restoring the intrinsic bulk‐like spin cycloid and enabling ≈50% faster ferroelectric switching than substrate‐clamped epitaxial thin films. This combination of robust noncollinear antiferromagnetic order and efficient electric‐field switching establishes ...
Pratap Pal, Xiaoxi Deng, Gi‐Yeop Kim, Kyoungjun Lee, Jheng‐Cyuan Lin, Prithwijit Mandal, Jiangfeng Yang, Paul Steadman, Pascal Manuel, Roger D. Johnson, Si‐Young Choi, Paolo G. Radaelli, Chang‐Beom Eom   +12 more
wiley   +1 more source

A Cooperative ADRC-Based Approach for Angular Velocity Synchronization and Load-Sharing in Servomechanisms

Energies, 2022
This paper is concerned with designing a dynamical synchronization (via a robust cooperative control) of an electromechanical system network (EMSN), consisting of nonidentical brushed DC motors, where only the motors’ angular velocity measurements are ...
W. Fermin Guerrero-Sánchez, Jésus Linares-Flores, Arturo Hernández-Méndez, Victor R. Gonzalez-Diaz, Gerardo Mino Aguilar, German A. Munoz-Hernandez, J. Fermi Guerrero-Castellanos   +6 more
doaj   +1 more source

Input-To-State Stability For Discrete-Time Nonlinear Systems

, 1999
: In this paper the input-to-state stability (iss) property is studied for discrete-time nonlinear systems. We show that many iss results for continuoustime nonlinear systems in earlier papers (Sontag, 1989; Sontag, 1990; Sontag and Wang, 1996; Jiang ...
Zhong-ping Jiang, Yuan Wang, Eduardo Sontag   +2 more
core   +1 more source

Stability of Medicinal Nanoemulsions to Spaceflight: Insights From the StarMed Experiment

Advanced Healthcare Materials, EarlyView.
Chitosan‐coated melatonin nanoemulsions (MN) recovered from a sounding rocket mission preserve droplet size and controlled‐release behavior, whereas uncoated nanoemulsions show ageing‐driven droplet growth and increased accessible drug fraction. Simple polymer coatings thus enhance the flight resilience of liquid space medicines under cumulative launch
Modupe Adebowale, Nguyen Van Duc Long, Philip M. Williams, Jens Hauslage, Volker Hessel   +4 more
wiley   +1 more source

Nonlinear model predictive control applied to spacecraft attitude control (Closed-loop stability and optimality with thrusters and wheels)

Nihon Kikai Gakkai ronbunshu, 2016
This paper studies model predictive control (MPC) for spacecraft nonlinear attitude control with actuator input nonlinearities. This technology is important to achieve high-rate large angle attitude maneuver problems of recent spacecraft missions.
Atsushi SAKAMOTO, Yuichi IKEDA, Isao YAMAGUCHI, Takashi KIDA   +3 more
doaj   +1 more source

Lyapunov-Based Controller Using Nonlinear Observer for Planar Motors

Mathematics, 2022
In general, it is not easy work to design controllers and observers for high-order nonlinear systems. Planar motors that are applied to semiconductor wafer-stage processes have 14th-order nonlinear dynamics and require high resolution for position ...
Khac Huan Su, Jaeyun Yim, Wonhee Kim, Youngwoo Lee   +3 more
doaj   +1 more source