Monitoring univariate processes using control charts: Some practical issues and advice

IM Zwetsloot, LA Jones-Farmer, WH Woodall - Quality Engineering, 2024 - Taylor & Francis
We provide an overview and discussion of some issues and guidelines related to monitoring
univariate processes with control charts. We offer some advice to practitioners to help them …

The effect of measurement errors on the performance of the homogenously weighted moving average X¯ monitoring scheme with estimated parameters

M Thanwane, JC Malela-Majika… - Journal of Statistical …, 2021 - Taylor & Francis
Classical monitoring schemes are typically designed under the assumption of known
process parameters, perfect measurements and normality. In real-life applications, these …

Nonparametric multivariate processes monitoring with guaranteed in-control performance for changes in location

J Merlo, AE Cordero-Franco… - Computers & Industrial …, 2022 - Elsevier
Multivariate statistical process control (MSPC) addresses the concurrent monitoring of
several measurements. Since multivariate normality is rare in practice, nonparametric …

A novel single composite Shewhart‐EWMA control chart for monitoring the process mean

JC Malela‐Majika, SC Shongwe… - Quality and …, 2022 - Wiley Online Library
Statistical process monitoring (SPM) literature recommends the combination of Shewhart
and exponentially weighted moving average (EWMA) schemes to improve the ability of the …

Predictive monitoring using machine learning algorithms and a real‐life example on schizophrenia

LCE Huberts, RJMM Does, B Ravesteijn… - Quality and …, 2022 - Wiley Online Library
Predictive process monitoring aims to produce early warnings of unwanted events. We
consider the use of the machine learning method extreme gradient boosting as the …

Effect of measurement errors on triple sampling X¯ ̄\bmX chart

AA Umar, MBC Khoo, S Saha… - Quality and Reliability …, 2022 - Wiley Online Library
The performance of the triple sampling (TS) X¯ ̄X chart is investigated by using a linear
covariate error model that considers the presence of measurement errors (ME), called the …

Parameter estimation effect of the homogeneously weighted moving average chart to monitor the mean of autocorrelated observations with measurement errors

M Thanwane, SC Shongwe, JC Malela-Majika… - IEEE …, 2020 - ieeexplore.ieee.org
In statistical process monitoring, the usual assumption when designing monitoring schemes
is that process parameters are known and have perfect measurements with independent …

The use of fast initial response features on the homogeneously weighted moving average chart with estimated parameters under the effect of measurement errors

M Thanwane, SA Abbasi… - Quality and …, 2021 - Wiley Online Library
Fast initial response (FIR) features are generally used to improve the sensitivity of memory‐
type control charts by shrinking time‐varying control limits in the earlier stage of the …

Carbon emission warning method for machine tool manufacturing process based on dynamic adaptive EWMA control chart

Z Song, D Liu, H Sha, X Jiang, Z Tian… - Environmental Science and …, 2024 - Springer
Abstract Machine tools constitute the backbone of the industrial sector, representing the
largest global inventory of equipment. The carbon emissions resulting from the production of …

Optimal design of the side sensitive group runs double sampling (SSGRDS) X¯ scheme with estimated process parameters

ZL Chong, WC Yeong, KW Khaw… - Transactions of the …, 2024 - journals.sagepub.com
The side sensitive group runs double sampling (SSGRDS) X¯ scheme is previously studied
under the known process parameters (Case-K) assumption. As the process parameters are …