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Functional liver imaging score derived from hepatobiliary-specific contrast-enhanced MRI: a study on agreement and correlation [PDF]

open access: yesInsights into Imaging
Purpose To investigate inter-and intra-observer agreement of Functional Liver Imaging Score (FLIS) in different populations, hepatobiliary phase (HBP), and radiologists, while analyzing the correlation between FLIS and liver function.
Hou-yun Xu   +6 more
doaj   +2 more sources

T-S fuzzy approach for real-time vehicle state estimation and road safety enhancement [PDF]

open access: yesScientific Reports
Safe driving requires a comprehension of critical instances and dangers, achievable only through accurate estimation of dynamic vehicle behavior and road characteristics. This study proposes a Takagi-Sugeno (T-S) fuzzy functional observer capable of real-
Mohamed Saber   +4 more
doaj   +2 more sources

Observer based resilient security control for networked nondeterministic Markovian jump systems with cyber attacks and its applications [PDF]

open access: yesScientific Reports
This paper investigates the problem of the observer-based resilient event-triggered control for stochastic Markovian jump systems subject to probabilistic cyber attacks, actuator failures, and controller gain variations.
T. Saravanakumar   +4 more
doaj   +2 more sources

A Contribution in the Observer Design for a Class of Bilinear Singular Delayed Systems

open access: yesIEEE Access, 2022
This paper proposes a functional observer for a bilinear singular systems with constant time delay present in both state and known input vectors. The considered system has transformed to an updated form in order to estimate both a state vector and an ...
Fatma Hamzaoui   +2 more
doaj   +1 more source

Combination of Functional and Disturbance Observer for Positive Systems with Disturbances

open access: yesMathematics, 2022
This technique note proposes two classes of functional and disturbance observers for positive systems with structural and non-structural disturbances, respectively.
Lanai Huang   +3 more
doaj   +1 more source

Nonlinear Functional Observer Design for Robot Manipulators

open access: yesMathematics, 2023
In this paper, a nonlinear functional observer (NFO) is first proposed for the control design of robot manipulators under model uncertainties, external disturbances, and a lack of joint velocity information.
Hoang Vu Dao   +2 more
doaj   +1 more source

Induction Motor PI Observer with Reduced-Order Integrating Unit

open access: yesEnergies, 2021
This article presents an innovative induction motor state observer designed to reconstruct magnetic fluxes and the angular speed of an induction motor for speed sensorless control system applications such as field-oriented control (FOC). This observer is
Tadeusz Białoń   +3 more
doaj   +1 more source

A Modified Functional Observer-Based EID Estimator for Unknown Continuous-Time Singular Systems

open access: yesApplied Sciences, 2020
This paper presents the design of a linear quadratic analog tracker (LQAT) based on the observer–Kalman-filter identification (OKID) method and the design of a modified functional observer-based equivalent input disturbance (EID) estimator for unknown ...
Jason Sheng-Hong Tsai   +6 more
doaj   +1 more source

Parametric design of reduced-order functional observers for linear time-varying delay systems

open access: yesMeasurement + Control, 2022
This paper investigates the design of reduced-order functional observer for linear time-invariant systems (LTI) with time-varying delay. Firstly, the sufficient condition for the existence of reduced-order delay-free functional observers is obtained ...
Da-Ke Gu   +3 more
doaj   +1 more source

Parametric design to reduced-order functional observer for linear time-varying systems

open access: yesMeasurement + Control, 2021
This article studies the parametric design of reduced-order functional observer (ROFO) for linear time-varying (LTV) systems. Firstly, existence conditions of the ROFO are deduced based on the differentiable nonsingular transformation. Then, depending on
Da-Ke Gu, Li-Song Sun, Yin-Dong Liu
doaj   +1 more source

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