Results 41 to 50 of about 10,176,638 (232)

A Morphing Point-to-Point Displacement Control Based on Long Short-Term Memory for a Coplanar XXY Stage

open access: yesSensors, 2023
In this study, visual recognition with a charge-coupled device (CCD) image feedback control system was used to record the movement of a coplanar XXY stage.
Ming-Yu Ma, Yi-Cheng Huang, Yu-Tso Wu
doaj   +1 more source

Residual tail twisting in ascidian larvae is stabilized by asymmetric myofibrils that resist bilateral symmetry restoration

open access: yesFEBS Letters, EarlyView.
Ascidian Ciona larvae initially show strong clockwise tail twisting, which is largely corrected during development. However, a small residual twist remains. This study shows that organized helical myofibrils in tail muscles mechanically stabilize this residual asymmetry, preventing complete restoration of bilateral symmetry and revealing how embryos ...
Yuki S. Kogure   +3 more
wiley   +1 more source

Adaptive control for double-integrator class systems in the absence of velocity feedback [PDF]

open access: yes, 2013
textThis work considers formulation of new classes of adaptive controllers for double-integrator type systems where the underlying system parameters are uncertain and the complete state-vector is not available for feedback.
Yang, Sungpil
core  

Design of a High-Precision Self-Balancing Potential Transformer Calibrator

open access: yesEnergies
Potential transformers are vital for measuring and protecting the power grid. Their accuracy and reliability directly impact the stability and security of the power system.
Mengjia Li   +6 more
doaj   +1 more source

Lipid metabolism in cultured cells. XVI. Lipoprotein binding and HMG CoA reductase levels in normal and tumor virus-transformed human fibroblasts

open access: yesJournal of Lipid Research, 1977
The loss in feedback control of cholesterol biosynthesis in tumor cells was examined in tissue culture. Human fibroblasts from normal subjects, SV40 tumor virus-transformed cell lines, and homozygous familial hypercholesterolemic cells as reference, were
J M Bailey, J D Wu
doaj   +1 more source

Feedback control and the arrow of time [PDF]

open access: yesInternational Journal of Control, 2008
The purpose of this paper is to highlight the central role that the time asymmetry of stability plays in feedback control. We show that this provides a new perspective on the use of doubly-infinite or semi-infinite time axes for signal spaces in control theory.
Tryphon T. Georgiou, Malcolm C. Smith
openaire   +5 more sources

The human gut microbiome across the life course

open access: yesFEBS Letters, EarlyView.
Despite significant individual variation and continuous change throughout life, the human gut microbiome follows some life stage‐specific trends. This article provides a brief overview of how gut microbiome composition shifts across different phases of life. Created in BioRender. Özkurt, E. (2026) https://BioRender.com/8q4nrnc.
Alise J. Ponsero   +4 more
wiley   +1 more source

Nonlinear Output Feedback Control: An Analysis of Performance and Robustness [PDF]

open access: yes, 2004
By considering a non-singular performance cost functional, observer backstepping designs and adaptive observer backstepping designs are compared to high-gain observer designs for an output feedback system and a parametric output feedback system.
Xie, Chengkang
core   +1 more source

A Levitation Control Method for Maglev Train by Electromagnetic Force Feedback

open access: yesKongzhi Yu Xinxi Jishu, 2020
Levitation control of electrical magnetic suspension (EMS) maglev vehicles generally adopts a two-loop method, in which the outer loop is a gap loop and the inner loop is a current loop.
GUO Wei   +5 more
doaj  

Attacking a Feedback Controller

open access: yesElectronic Notes in Theoretical Computer Science, 2015
AbstractWe consider the problem of generating sensor spoofing attacks on feedback controllers. The attacker has the option of remaining in a stealth mode – wherein it spoofs some sensor but only by an amount that is indistinguishable from noise. Later, the attacker can launch a full attack and try to force the system to get into an unsafe region. Using
openaire   +2 more sources

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