Results 81 to 90 of about 4,710 (223)

Weibull‐Neural Network Framework for Wind Turbine Lifetime Monitoring and Disturbance Identification

open access: yesWind Energy, Volume 29, Issue 4, April 2026.
ABSTRACT Wind turbines are vital for sustainable energy, yet their reliability under diverse operational and environmental conditions remains a challenge, often leading to costly failures. This study presents a novel Weibull‐Neural Network Framework to enhance wind turbine lifetime monitoring by estimating reliability (R(t)) and mean residual life (MRL)
Fatemeh Kiadaliry   +2 more
wiley   +1 more source

A Nonparametric Multivariate Control Chart Based on Data Depth [PDF]

open access: yes
For the design of most multivariate control charts, it is assumed that the observations follow a multivariate normal distribution. In practice, this assumption is rarely satisfied.
Weihs, Claus   +2 more
core  

Çarpık Dağılımları İçin Ewma Kontrol Kartları

open access: yes, 2020
The classic Shewhart control charts are generally used for monitoring the process mean and variability in the characteristics of a random quality variable of interest and are based on the normality assumptions.
Moustapha, Amınou Tukur
core  

Optimal Design of One-Sided Exponential EWMA Charts With Estimated Parameters Based on the Median Run Length

open access: yesIEEE Access, 2019
One-sided exponential exponentially weighted moving average (EWMA) charts are useful tools for monitoring high-quality processes. Average run length ($ARL$ ) is usually used as the only criterion to evaluate the performance of a control chart.
Yulong Qiao   +3 more
doaj   +1 more source

Derivations for the Cumulative Standardized Binomial EWMA (CSB-EWMA) Control Chart

open access: yes
This paper presents the exact mathematical derivation of the mean and variance properties for the Exponentially Weighted Moving Average (EWMA) statistic applied to binomial proportion monitoring in Multiple Stream Processes (MSPs). We develop a Cumulative Standardized Binomial EWMA (CSB-EWMA) formulation that provides adaptive control limits based on ...
Muritala, Faruk   +3 more
openaire   +2 more sources

Assessing Measurement Noise Effect in Run-to-Run Process Control: Extends EWMA Controller by Kalman Filter

open access: yesInternational Journal of Automation and Smart Technology, 2011
Recently, the Exponentially Weighted Moving Average (EWMA) controller has become a popular control method in Run-to-Run (RtR) process control, but the issue of measurement noise from metrology tools has not been addressed in RtR EWMA controllers yet ...
Tzu-Wei Kuo, An-Chen Lee
doaj   +1 more source

Process adjustment when using EWMA charts

open access: yes, 1995
Following an alarm signal from a control chart it may be necessary to conduct an adjustment to bring the process mean towards a target value. Addresses the problem of how such an adjustment should be made, based on the use of an EWMA control chart ...
Stig Johan Wiklund
core   +1 more source

Timely detection of influenza outbreaks in Iran: Evaluating the performance of the exponentially weighted moving average

open access: yesJournal of Infection and Public Health, 2018
Background: Real time detection of influenza outbreaks is necessary by public health authorities. The aim of this study was to determine the performance of the Exponentially Weighted Moving Average (EWMA) in detection of influenza outbreaks in Iran from ...
Manoochehr Solgi   +2 more
doaj   +1 more source

EWMA control charts with intelligent systems

open access: yes, 2017
EWMA control charts are based on the intuitive idea of accumulating information over the time by exponentially discounted weighting of the observations and hence these charts are known to be relatively effective in detecting small to moderate sized ...

core   +1 more source

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