Results 51 to 60 of about 167,196 (302)

Nonlinear Dynamic Model-Based Adaptive Control of a Solenoid-Valve System

Journal of Control Science and Engineering, 2012
In this paper, a nonlinear model-based adaptive control approach is proposed for a solenoid-valve system. The challenge is that solenoids and butterfly valves have uncertainties in multiple parameters in the nonlinear model; various kinds of physical ...
DongBin Lee, Peiman Naseradinmousavi, C. Nataraj   +2 more
doaj   +1 more source

Temporal Trends in and Associations With Nonsteroidal Anti‐inflammatory Drug Prescription in Adult and Pediatric Patients With Inflammatory Bowel Disease

Arthritis Care &Research, EarlyView.
Objective Recent inflammatory bowel disease (IBD) treatment guidelines have recommended against nonsteroidal anti‐inflammatory drug (NSAID) use despite prevalent musculoskeletal symptoms and opioid overuse in this population. Given the discordance between changing national guidelines and potential clinical utility, we sought to assess national temporal
Adam S. Mayer, Rui Xiao, Andrew Grossman, Meenakshi Bewtra, Michael D. George, Pamela F. Weiss   +5 more
wiley   +1 more source

Fractional-order chaotic system with hyperbolic function

Advances in Mechanical Engineering, 2019
In this article, we study bistability, multiscroll, and symmetric properties of fractional-order chaotic system with cubic nonlinearity. The system is configured with hyperbolic function consisting of a parameter “ g .” By varying the parameter “ g ...
G Gugapriya, Prakash Duraisamy, Anitha Karthikeyan, B Lakshmi   +3 more
doaj   +1 more source

A Consistent Nonparametric Test for Granger Non-Causality Based on the Transfer Entropy

Entropy, 2020
To date, testing for Granger non-causality using kernel density-based nonparametric estimates of the transfer entropy has been hindered by the intractability of the asymptotic distribution of the estimators. We overcome this by shifting from the transfer
Cees Diks, Hao Fang
doaj   +1 more source

Parameter Analysis of an Intershaft Dual-Rotor with the Application of Squeeze Film Dampers

Shock and Vibration, 2021
The squeeze film damper is usually adopted in the rotor system to suppress the vibrating motion of the rotor system. In this work, not only are the physical parameters of the squeeze film damper analyzed but also the system parameters, like the number of
Huizheng Chen, Shun Zhong, Zhenyong Lu, Yushu Chen, Xiyu Liu   +4 more
doaj   +1 more source

A Q‐Learning Algorithm to Solve the Two‐Player Zero‐Sum Game Problem for Nonlinear Systems

International Journal of Adaptive Control and Signal Processing, Volume 39, Issue 3, Page 566-581, March 2025.
A Q‐learning algorithm to solve the two‐player zero‐sum game problem for nonlinear systems. ABSTRACT This paper deals with the two‐player zero‐sum game problem, which is a bounded L2$$ {L}_2 $$‐gain robust control problem. Finding an analytical solution to the complex Hamilton‐Jacobi‐Issacs (HJI) equation is a challenging task.
Afreen Islam, Anthony Siming Chen, Guido Herrmann   +2 more
wiley   +1 more source

IoT-Based Heartbeat Rate-Monitoring Device Powered by Harvested Kinetic Energy

Sensors
Remote patient-monitoring systems are helpful since they can provide timely and effective healthcare facilities. Such online telemedicine is usually achieved with the help of sophisticated and advanced wearable sensor technologies.
Olivier Djakou Nekui, Wei Wang, Cheng Liu, Zhixia Wang, Bei Ding   +4 more
doaj   +1 more source

Absence Seizure Control by a Brain Computer Interface

Scientific Reports, 2017
The ultimate goal of epileptology is the complete abolishment of epileptic seizures. This might be achieved by a system that predicts seizure onset combined with a system that interferes with the process that leads to the onset of a seizure.
Vladimir A. Maksimenko, Sabrina van Heukelum, Vladimir V. Makarov, Janita Kelderhuis, Annika Lüttjohann, Alexey A. Koronovskii, Alexander E. Hramov, Gilles van Luijtelaar   +7 more
doaj   +1 more source

Hopfield Neural Networks for Online Constrained Parameter Estimation With Time‐Varying Dynamics and Disturbances

International Journal of Adaptive Control and Signal Processing, EarlyView.
This paper proposes two projector‐based Hopfield neural network (HNN) estimators for online, constrained parameter estimation under time‐varying data, additive disturbances, and slowly drifting physical parameters. The first is a constraint‐aware HNN that enforces linear equalities and inequalities (via slack neurons) and continuously tracks the ...
Miguel Pedro Silva
wiley   +1 more source

A new method to reduce the number of time delays in a network

Scientific Reports, 2017
Time delays may cause dramatic changes to the dynamics of interacting oscillators. Coupled networks of interacting dynamical systems can have unexpected behaviours when the signal between the vertices are time delayed.
Alexandre Wagemakers, Miguel A. F. Sanjuán   +1 more
doaj   +1 more source