Results 21 to 30 of about 4,548,243 (309)

Design of a Robust H∞ Controller for Affine Nonlinear Singular Systems with Norm-bounded Time-varying Uncertainties [PDF]

AUT Journal of Modeling and Simulation, 2020
In this paper, the problem of robust H∞ control for continuous-time affine nonlinear singular systems with norm-bounded time-varying uncertainties is addressed. The problem is solved locally by employing two different approaches. The first approach is an
Vahid Shojaee, Masoud Shafiee, Heidar Ali Talebi   +2 more
doaj   +1 more source

Arm-length stabilisation for interferometric gravitational-wave detectors using frequency-doubled auxiliary lasers [PDF]

, 2011
Residual motion of the arm cavity mirrors is expected to prove one of the principal impediments to systematic lock acquisition in advanced gravitational-wave interferometers.
Evans, Matthew, Fritschel, Peter, McClelland, David E., Miller, John, Mullavey, Adam J., Shaddock, Daniel A., Sigg, Daniel, Slagmolen, Bram J. J., Waldman, Sam J.   +8 more
core   +2 more sources

Holographic Interpretation of Relative State Complexity

Universe, 2020
We investigate a large-N conformal field theory (CFT) in a high-energy pure state coupled to a small auxiliary system of M weakly-interacting degrees of freedom, and argue the relative state complexity of the auxiliary system is holographically dual to ...
Alexander Yosifov, Aditya Iyer, Lachezar Filipov   +2 more
doaj   +1 more source

Non-equilibrium Green's function formalism and the problem of bound states [PDF]

, 2006
The non-equilibrium Green's function formalism for infinitely extended reservoirs coupled to a finite system can be derived by solving the equations of motion for a tight-binding Hamiltonian.
Dhar, Abhishek, Sen, Diptiman
core   +2 more sources

Dynamic Response of a Permanent Magnet Synchronous Generator to a Wind Gust

Energies, 2019
In this paper, a new analytical approach is proposed to investigate the electrical and mechanical behavior of a low-power permanent magnet synchronous generator (PMSG) in the presence of a wind gust.
Nicolae Herisanu, Vasile Marinca, Gheorghe Madescu, Florin Dragan   +3 more
doaj   +1 more source

An Extension of the Invariance Principle for Switched Affine System

Trends in Computational and Applied Mathematics, 2020
In this paper, an approach to investigate switched affine system via matrix inequalities is presented. Particularly, an extension of LaSalle’s invariance principle for this class of systems under arbitrary dwell-time switching signal is presented.
Thiago S. Pinto, Luís F. C. Alberto, Michele C. Valentino   +2 more
doaj   +1 more source

Research on uninterruptable power supply technology for auxiliary winding of electric locomotive while passing the neutral section [PDF]

Railway Sciences
Purpose – Auxiliary power system is an indispensable part of the train; the auxiliary systems of both electric locomotives and EMUs mainly are powered by one of the two ways, which are either from auxiliary windings of traction transformers or from DC ...
Yuliang Du
doaj   +1 more source

An active mass damper operated by a system consisting of a neural oscillator and PD controller (A design method of a PD controller for vibration mitigation with consideration of acceleration responses of an auxiliary mass)

Nihon Kikai Gakkai ronbunshu, 2016
This paper proposes a design method of a PD controller with consideration of acceleration responses of an auxiliary mass for active mass dampers (AMDs) operated by a combination system of a neural oscillator and position controller.
Junichi HONGU, Daisuke IBA, Morimasa NAKAMURA, Ichiro MORIWAKI   +3 more
doaj   +1 more source

A Model-Free Output Feedback Control Approach for the Stabilization of Underactuated TORA System with Input Saturation

Actuators, 2022
The horizontal translational oscillator with a rotational actuator (TORA) is a typical underactuated mechanical system, whose control problem is still open and theoretically challenging.
Changzhong Pan, Chenchen Cui, Lan Zhou, Peiyin Xiong, Zhijing Li   +4 more
doaj   +1 more source

Design of large aperture sparse array for mainlobe interference cancellation

The Journal of Engineering, 2019
Large aperture sparse array has the ability of mainlobe interference suppression. However, sparse array causes grating lobe problem. If the array is steering at the target and the mainlobe interference is located at the grating lobe, the adaptive filter ...
Honggang Zhang, Wei Liu, Quanhua Liu, Jian Yang   +3 more
doaj   +1 more source