Results 31 to 40 of about 12,631,699 (241)

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

FEBS 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, Misaki K. Nishio, Satoru Okuda, Kohji Hotta   +3 more
wiley   +1 more source

Double-layered nonlinear model predictive control based on Hammerstein–Wiener model with disturbance rejection

Measurement + Control, 2018
This paper presents the double-layered nonlinear model predictive control method for a continuously stirred tank reactor and a pH neutralization process that are subject to input disturbances and output disturbances at the same time.
Hongbin Cai, Ping Li, Chengli Su, Jiangtao Cao   +3 more
doaj   +1 more source

Sliding Mode Control for Hypersonic Vehicle Based on Extreme Learning Machine Neural Network Disturbance Observer

IEEE Access, 2022
The novel extreme learning machine (ELM) neural network disturbance observer (NNDO) -based sliding mode control (SMC) strategy is proposed for the precise tracking control of a hypersonic vehicle (HV) under various disturbance situations.
Haiyan Gao, Weiqiang Tang, Rong Fu
doaj   +1 more source

Biophysical approaches for studying viral entry

FEBS Letters, EarlyView.
Viruses infect all living organisms and have been responsible for major epidemics and pandemics. Their ongoing evolutionary battle with host defenses creates a constant need for improved tools to study viral behavior. Advancing methods to probe viral attachment, fusion, and genome release deepen our understanding of how infections begin and support the
Inbar Yosibash, Raya Sorkin
wiley   +1 more source

Offset-free nonlinear MPC with Koopman-based surrogate models [PDF]

In this paper, we design offset-free nonlinear Model Predictive Control (MPC) for surrogate models based on Extended Dynamic Mode Decomposition (EDMD).
Schimperna, Irene, Bold, Lea, Worthmann, Karl   +2 more
core   +1 more source

Influence of Ball-End Milling Strategy on the Accuracy and Roughness of Free Form Surfaces

Applied Sciences, 2022
Freeform surfaces are present on an increasing number of engineering products. Three- and multi-axis computer numerical control milling machines are commonly used for improved production.
Zuzana Grešová, Peter Ižol, Marek Vrabeľ, Ľuboš Kaščák, Jozef Brindza, Michal Demko   +5 more
doaj   +1 more source

The human gut microbiome across the life course

FEBS 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, Basak Bahcivanci, Antonietta Hayhoe, Animesh Acharjee, Ezgi Özkurt   +4 more
wiley   +1 more source

Disturbance Models for Offset-free Model Predictive Control

, 2003
Model predictive control algorithms achieve offset-free control objectives by adding integrating disturbances to the process model. The purpose of these additional disturbances is to lump the plant-model mismatch and/or unmodeled disturbances.
PANNOCCHIA, GABRIELE, RAWLINGS JB
core   +1 more source

Hierarchical PIwFF–Koopman-Based Offset-Free MPC for AUV Trajectory Tracking: Simulation and Pool Experiments

IEEE Access
Accurate trajectory tracking of autonomous underwater vehicles (AUVs) is challenging because nonlinear hydrodynamics, actuator constraints, and persistent plant–model mismatch degrade controller performance.
Benjaset Maneeloke, Peerayot Sanposh, Yodyium Tipsuwan, Sudchai Boonto, Warit Tanaprasitpattana, Nattakit Techajaroonjit, Natthawut Chinthaned, Soranuth Sirisuay   +7 more
doaj   +1 more source

Disturbance modeling and state estimation for offset-free predictive control with state-space process models

International Journal of Applied Mathematics and Computer Science, 2014
Disturbance modeling and design of state estimators for offset-free Model Predictive Control (MPC) with linear state-space process models is considered in the paper for deterministic constant-type external and internal disturbances (modeling errors). The
Tatjewski Piotr
doaj   +1 more source