Results 11 to 20 of about 992,761 (339)

Passive states for essential observers [PDF]

open access: yesJournal of Mathematical Physics, 2008
The aim of this note is to present a unified approach to the results given by Borchers and Buchholz [“Global properties of vacuum states in de Sitter space,” Ann. Inst. Henri Poincare, Sect. A. 70, 23–40 (1999)] and by Buchholz and Summers [“Stable quantum systems in anti-de Sitter space: Causality, independence and spectral properties,” J. Math. Phys. 
Borchers H. J.   +10 more
openaire   +5 more sources

Real-time state of charge estimation of electrochemical model for lithium-ion battery [PDF]

open access: yes, 2020
This paper proposes the real-time Kalman filter based observer for Lithium-ion concentration estimation for the electrochemical battery model. Since the computation limitation of real-time battery management system (BMS) micro-processor, the battery ...
Fan, Chuanxin   +2 more
core   +1 more source

Design of Observer-Based H∞ Controller for Robust Stabilization of Networked Systems Using Switched Lyapunov Functions [PDF]

open access: yesAUT Journal of Modeling and Simulation, 2018
In this paper, a H. controller is synthesized for networked systems subject to random transmission delays with known upper bound and different occurrence probabilities in both feedback (sensor to controller) and forward (controller to actuator) channels.
A. Farnam, R. Mahboobi Esfanjani
doaj   +1 more source

Disturbance estimation for the hydraulic drive system based on the state observer and neural network

open access: yesTạp chí Khoa học và Công nghệ, 2023
The hydraulic servo drive system has the ability to operate stably with high reliability in conditions of continuous operation and large capacity. Aside from these advantages, the system always has nonlinear and uncertain factors that affect and reduce ...
Chu Duc Chinh   +2 more
doaj   +1 more source

Non-Recursive Fixed-Time Convergence Observer and Extended State Observer

open access: yesIEEE Access, 2018
In this paper, non-recursive fixed-time convergence (FxTC) observers were proposed to deal with missions, such as state estimation and tracking differentiation. The observers were designed based on the time-scale paradigm, such that the parameters tuning
Feng Yang   +3 more
doaj   +1 more source

Disturbance observer-based fuzzy adaptive optimal finite-time control for nonlinear systems

open access: yesApplied Mathematics in Science and Engineering, 2023
This paper investigates the issue of disturbance observer-based fuzzy adaptive optimal finite-time control in light of the backstepping approach for strict-feedback nonlinear systems with bias fault term and full state constraints.
Zidong Sun, Li Liang, Wei Gao
doaj   +1 more source

Towards a minimal order distributed observer for linear systems [PDF]

open access: yes, 2017
In this paper we consider the distributed estimation problem for continuous-time linear time-invariant (LTI) systems. A single linear plant is observed by a network of local observers.
Han, Weixin   +3 more
core   +2 more sources

Fuzzy-Based Fixed-Time Nonsingular Tracker of Exoskeleton Robots for Disabilities Using Sliding Mode State Observer

open access: yesMathematics, 2022
In this article, the position tracking control of the wheelchair upper-limb exoskeleton robotic system is investigated with the aim of rehabilitation of disabled people. Hence, the fuzzy nonsingular terminal sliding mode control method by using the state
Ayman A. Aly   +6 more
doaj   +1 more source

Observer-Based Autopilot Heading Finite-Time Control Design for Intelligent Ship with Prescribed Performance

open access: yesJournal of Marine Science and Engineering, 2021
Traffic engineering control is a major challenge in marine transportation. Cost efficiency and high performance demand advanced technologies for the ship control systems.
Liyan Zhu, Tieshan Li
doaj   +1 more source

A Robust Observer—Based Adaptive Control of Second—Order Systems with Input Saturation via Dead-Zone Lyapunov Functions

open access: yesComputation, 2021
In this study, a novel robust observer-based adaptive controller was formulated for systems represented by second-order input–output dynamics with unknown second state, and it was applied to concentration tracking in a chemical reactor.
Alejandro Rincón   +2 more
doaj   +1 more source

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