Results 71 to 80 of about 14,463,930 (343)

Observer-Based Sliding Mode FTC for Multi-Area Interconnected Power Systems against Hybrid Energy Storage Faults

open access: yesEnergies, 2019
An observer-based sliding mode fault-tolerant controller is developed in this paper, which is applied to an interconnected power system with a hybrid energy storage system (HESS). The model of the interconnected power system with HESS is introduced first.
Weilin Yang   +3 more
doaj   +1 more source

Reduced-Order and Full-Order Interval Observers Design for Discrete-Time System

open access: yesIEEE Access, 2020
In this paper, the design of reduced-order and full-order interval observers for discrete-time system is investigated. First, the original system is transformed into a descriptor system with the ability to estimate the unknown noise of sensors.
Weijie Ren   +3 more
doaj   +1 more source

Observer Based Sliding Mode Attitude Control: Theoretical and Experimental Results [PDF]

open access: yesModeling, Identification and Control, 2011
In this paper we present the design of a sliding mode controller for attitude control of spacecraft actuated by three orthogonal reaction wheels. The equilibrium of the closed loop system is proved to be asymptotically stable in the sense of Lyapunov ...
U. Jørgensen, J.T. Gravdahl
doaj   +1 more source

Improving the Evaluation and Management of Transfusion‐Related Iron Overload in Children, Adolescents, and Young Adults Following Cancer Treatment or Hematopoietic Stem Cell Transplantation

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Transfusion‐related iron overload (TRIO) is a late effect of therapy impacting survivors of childhood cancer and hematopoietic stem cell transplantation (HSCT) who receive frequent packed red blood cell (pRBC) transfusions. Surprisingly, there are no accepted guidelines to assist providers in identifying and treating at‐risk ...
Luke Gingell   +3 more
wiley   +1 more source

A globally exponentially stable position observer for interior permanent magnet synchronous motors

open access: yes, 2020
The design of a position observer for the interior permanent magnet synchronous motor is a challenging problem that, in spite of many research efforts, remained open for a long time.
Choi, Jongwon   +4 more
core   +1 more source

Zonotopic fault detection observer design for Takagi–Sugeno fuzzy systems [PDF]

open access: yes, 2018
This paper considers zonotopic fault detection observer design in the finite-frequency domain for discrete-time Takagi–Sugeno fuzzy systems with unknown but bounded disturbances and measurement noise. We present a novel fault detection observer structure,
Li, Jitao   +3 more
core   +2 more sources

Novel Genetic Risk Factor Identified for L‐Asparaginase‐Induced Pancreatitis in Pediatric Patients With Cancer

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background L‐asparaginase is a critical component in treatment protocols for pediatric acute lymphoblastic leukemia. Acute pancreatitis reactions can necessitate delays and, in some cases, discontinuation of L‐asparaginase, which compromises outcomes.
Edward J. Raack   +39 more
wiley   +1 more source

Sliding observer-based demagnetisation fault-tolerant control in permanent magnet synchronous motors

open access: yesThe Journal of Engineering, 2017
This study proposes a fault-tolerant control method for permanent magnet synchronous motors (PMSMs) based on the active flux linkage concept, which addresses permanent magnet (PM) demagnetisation faults in PMSMs. First, a mathematical model for a PMSM is
Changfan Zhang   +3 more
doaj   +1 more source

Scale Factor Estimation for Quadrotor Monocular-Vision Positioning Algorithms

open access: yesSensors, 2022
Unmanned aerial vehicle (UAV) autonomous navigation requires access to translational and rotational positions and velocities. Since there is no single sensor to measure all UAV states, it is necessary to fuse information from multiple sensors. This paper
Alejandro Gómez-Casasola   +1 more
doaj   +1 more source

Robust output stabilization: improving performance via supervisory control [PDF]

open access: yes, 2009
We analyze robust stability, in an input-output sense, of switched stable systems. The primary goal (and contribution) of this paper is to design switching strategies to guarantee that input-output stable systems remain so under switching. We propose two
Efimov, Denis   +2 more
core   +5 more sources

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