Results 61 to 70 of about 27,507,539 (289)

Application of a New Model Reference Adaptive Control Based on PID Control in CNC Machine Tools

open access: yes, 2021
To improve the control performance of the CNC machine tool feed servo system with nonlinear disturbances, a model reference adaptive control (MRAC) based on PID control is proposed.
Guangming Zheng   +5 more
core   +1 more source

Modeling and Control of Reconfigurable Quadrotors Based on Model Reference Adaptive Control

open access: yesAerospace
To expand the application prospects of quadrotors in challenging scenes such as those with dense obstacles and narrow corridors, task-driven reconfigurable quadrotors are highly desirable.
Zhiping Liu, Guoshao Chen, Shuping Xu
doaj   +1 more source

Microbiome‐blood–brain barrier interactions in aging — mechanisms and therapeutic potential

open access: yesFEBS Letters, EarlyView.
Aging reshapes the gut microbiome (↓SCFA‐producing commensals; ↑pro‐inflammatory outputs), shifting circulating metabolites (↓SCFAs; ↑LPS, ↑TMAO, ↑PAA) that act at the BBB to increase nonspecific transcytosis, alter transport, and promote astrocyte reactivity, heightening brain vulnerability.
Daniel Cuervo‐Zanatta   +3 more
wiley   +1 more source

Adaptive control of unmanned surface vessels matching an optimized reference model

open access: yes, 2014
In this paper, adaptive control of unmanned marine surface vessel has been investigated in the presence of uncertain dynamics as well as external disturbance.
Sharma, Sanjay   +4 more
core   +1 more source

A Model Reference Adaptive Control Approach to Terrain Following Flight Control System

open access: yesDüzce Üniversitesi Bilim ve Teknoloji Dergisi
Automatic Flight Control System (AFCS) Terrain Following (TF) mode allows military aircraft to fly at a certain altitude above ground level at a low altitude. TF mode reduces the probability of aircraft detection by enemy airborne radars.
Berk İnan, İbrahim Aliskan
doaj   +1 more source

The microbiome in human skin aging

open access: yesFEBS Letters, EarlyView.
Age‐related skin changes encompass the well‐known visible phenotypic alterations, together with microbiome dysbiosis and a series of molecular aging hallmarks. These hallmarks characterize not only a fully stablished aged phenotype but also the skin aging process itself.
Manuel Huerta Arana   +3 more
wiley   +1 more source

Discrete-time model reference adaptive control for three-phase PWM rectifiers

open access: yes电力工程技术
Three-phase pulse width modulation (PWM) rectifiers are essential power conversion devices in AC microgrids. However, DC load disturbances in the microgrid are unknown and filter capacitor parameters are imprecise, which will directly affect the control ...
Jiayan QI, Bo HOU, Yunguang GAO
doaj   +1 more source

Autophagy and mitophagy in pancreatic β‐cell homeostasis and their involvement in diabetes pathophysiology

open access: yesFEBS Letters, EarlyView.
This review focuses on the role of autophagy and mitophagy in maintaining pancreatic β‐cell function and homeostasis. We discuss how genetic defects affecting these pathways contribute to the development of type 1, type 2, monogenic, and gestational diabetes. We further explore their potential as therapeutic targets. Created in BioRender.
Yunkyeong Lee   +2 more
wiley   +1 more source

Model reference adaptive control and LQR control for quadrotor with parametric uncertainties

open access: yes, 2015
A model reference adaptive control and a fixed gain LQR control were implemented in the height controller of a quadrotor that has parametric uncertainties due to the act of picking up an object of unknown dimension and mass.
Abdul Ghaffar, Alia Farhana   +1 more
core  

Predictor-Based Model Reference Adaptive Control [PDF]

open access: yes, 2009
This paper is devoted to robust, Predictor-based Model Reference Adaptive Control (PMRAC) design. The proposed adaptive system is compared with the now-classical Model Reference Adaptive Control (MRAC) architecture.
Lavretsky, Eugene   +5 more
core   +1 more source

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