نتایج جستجو برای: mras adaptive system

تعداد نتایج: 2368441  

Journal: :Power Electronics and Drives 2023

Abstract This article presents an active current sensor (CS) fault-tolerant control (FTC) strategy for induction motor (IM) drive with adaptation of rotor and stator resistances. The estimator online resistance parameters was applied the reconstruction missing signals. A model reference adaptive system (MRAS), based on a neural network (NN), used to estimate resistance. Additionally, estimation...

2017
Juan Carlos Yugar-Toledo Rodrigo Modolo Ana Paula de Faria Heitor Moreno

Mineralocorticoid-receptor antagonists (MRAs) have proven to be effective in some types of hypertension, especially in resistant hypertension (RHTN). In this phenotype of hypertension, the renin-angiotensin-aldosterone pathway plays an important role, with MRAs being especially effective in reducing blood pressure. In this review, we show the relevance of aldosterone in RHTN, as well as some cl...

2008
S. ALBEVERIO S. EVDOKIMOV M. SKOPINA

We study p-adic multiresolution analyses (MRAs). A complete characterisation of test functions generating MRAs (scaling functions) is given. We prove that only 1-periodic test functions may be taken as orthogonal scaling functions. We also suggest a method for the construction of wavelet functions and prove that any wavelet function generates a p-adic wavelet frame.

2010
MY. R. DOUIRI T. NASSER A. ESSADKI M. CHERKAOUI

This paper presents an improved direct torque of induction machine based on artificial neural networks. This intelligent technique was used to replace, on the one hand the conventional comparators and the selection table in order to reduce torque ripple, flux and stator current, on the other hand and the classic integral proportional (PI) in order to increase the response time period of the sys...

2014
M. Pattnaik

This paper reports the performance of a speed sensorless stand-alone Variable Speed Constant Frequency (VSCF) Doubly Fed Induction Generator (DFIG) capable of supplying all types of loads. The proposed method maintains the Total Harmonic Distortion (THD) of the machine current and the load voltage within acceptable limits. In contrast to previously proposed methods, in this paper, the stator si...

2004
Young Sam Kim Sang Kyoon Kim Young Ahn Kwon

Speed and torque controls of permanent magnet synchronous motors are usually attained by the application of position and speed sensors. However, speed and position sensors require the additional mounting space, reduce the reliability in harsh environments and increase the cost of a motor. Therefore, many studies have been performed for the elimination of speed and position sensors. This paper i...

Journal: :I. J. Robotics and Automation 2009
Dinko Vukadinovic Mate Smajo Ljubomir Kulisic

This paper presents a novel method for the rotor resistance identification of an indirect rotor field oriented (IRFO) control system of a saturated induction motor. A saturated induction motor is an induction motor with a variable (saturable) mutual inductance. Saturation of the mutual inductance appears in operating conditions with variable rotor flux levels in the IRFO control system of an in...

Journal: :Machines 2023

This paper introduces a sensorless nonlinear control scheme based on feedback linearization (FLC) of an open-end winding five-phase induction motor (OeW-5PIM) topology fed by dual neutral point clamped (NPC) inverter. The suggested is combined with the sliding mode (SM) controller to improve dynamic performance (i.e., rising time, overshoot, etc.) studied motor. Furthermore, stator-current-base...

Journal: :Electronics 2022

Marine permanent magnet synchronous propulsion motors have problems, such as low reliability and difficult maintenance in the traditional control. In this paper, a sensorless control system for motor (PMSM) based on parameter identification is proposed. According to mathematical model of two-phase rotating coordinate system, reference adaptation (MRAS) used estimate rotor speed position motor. ...

Journal: :JACC. Heart failure 2015
Antonio Lax Jesus Sanchez-Mas Maria C Asensio-Lopez Maria J Fernandez-Del Palacio Luis Caballero Iris P Garrido Francisco J Pastor-Perez James L Januzzi Domingo A Pascual-Figal

OBJECTIVES This study aimed to evaluate the specific role of the 2 available mineralocorticoid receptor antagonists (MRAs), eplerenone and spironolactone, on the modulation of galectin-3 (Gal-3) and interleukin (IL)-33/ST2 signaling in an experimental model of left ventricular systolic dysfunction after acute myocardial infarction (MI). BACKGROUND The molecular mechanisms of benefits of MRAs ...

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