Results 41 to 50 of about 979,760 (187)

On the Existence of a Kazantzis-Kravaris/Luenberger Observer [PDF]

open access: yes, 2006
We state sufficient conditions for the existence, on a given open set, of the extension, to nonlinear systems, of the Luenberger observer as it has been proposed by Kazantzis and Kravaris.
Boothby William   +4 more
core   +5 more sources

Optimized sampling of mixed-state observables [PDF]

open access: yesPhysical Review E, 2019
Quantum dynamical simulations of statistical ensembles pose a significant computational challenge due to the fact that mixed states need to be represented. If the underlying dynamics is fully unitary, for example in ultrafast coherent control at finite temperatures, one approach to approximate time-dependent observables is to sample the density ...
Heger, Marec W.   +2 more
openaire   +3 more sources

Performance limitations of observer-based feedback for transient energy growth suppression

open access: yes, 2018
Transient energy growth suppression is a common control objective for feedback flow control aimed at delaying transition to turbulence. A prevailing control approach in this context is observer-based feedback, in which a full-state feedback controller is
Hemati, Maziar S., Yao, Huaijin
core   +1 more source

Stabilization to Exponential Input-to-State Stability of a Class of Neural Networks with Delay by Observer-Based Aperiodic Intermittent Control

open access: yesDiscrete Dynamics in Nature and Society, 2021
This study is devoted to investigating the stabilization to exponential input-to-state stability (ISS) of a class of neural networks with time delay and external disturbances under the observer-based aperiodic intermittent control (APIC).
Mengyue Li, Biwen Li, Yuan Wan
doaj   +1 more source

Quantum Theory and Time Asymmetry

open access: yes, 1979
The relation between quantum measurement and thermodynamically irreversible processes is investigated. The reduction of the state vector is fundamentally asymmetric in time and shows an observer-relatedness which may explain the double interpretation of ...
A. Danieri   +37 more
core   +2 more sources

Is Patience a Virtue? Cosmic Censorship of Infrared Effects in de Sitter [PDF]

open access: yes, 2017
While the accumulation of long wavelength modes during inflation wreaks havoc on the large scale structure of spacetime, the question of even observability of their presence by any local observer has lead to considerable confusion.
Ferreira, Ricardo Z.   +2 more
core   +2 more sources

Conflict-driven Hybrid Observer-based Anomaly Detection

open access: yes, 2017
This paper presents an anomaly detection method using a hybrid observer -- which consists of a discrete state observer and a continuous state observer. We focus our attention on anomalies caused by intelligent attacks, which may bypass existing anomaly ...
balluchi   +10 more
core   +1 more source

State observer control for robotic series elastic actuators

open access: yesRevista Colombiana de Tecnologías de Avanzada
This implementation shows the results through a control state observer strategy for a series elastic actuator (SEA) of motorized robotic limbs, with the purpose of evaluate the disturbance response with regard to convetional PID controller.
Frank Nixon Giraldo Ramos
doaj   +1 more source

State Observer Under Multi-Rate Sensing Environment and Its Design Using l2-Induced Norm

open access: yesIEEE Access, 2023
Since the sensing period of a signal generally depends on the used sensor, it may be different from another, even in a single control system if it involves multiple sensors.
Hiroshi Okajima   +2 more
doaj   +1 more source

Wind Turbine Model and Observer in Takagi-Sugeno Model Structure

open access: yes, 2014
Based on a reduced-order, dynamic nonlinear wind turbine model in Takagi-Sugeno (TS) model structure, a TS state observer is designed as a disturbance observer to estimate the unknown effective wind speed. The TS observer model is an exact representation
Georg, Sören   +2 more
core   +1 more source

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