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A novel EWMA-based adaptive control chart for industrial application by using hastings approximation. [PDF]
Sci RepSarwar MA, Hanif M, Albogamy FR, Nabi M.
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Comparative Study of Adaptive Multivariate EWMA Control Charts
, 2019 Ming Ha Lee
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PBS machine interlocks using EWMA
Physics in Medicine and Biology, 2015Delivery of pencil beam scanning (PBS) requires the on-line measurement of several beam parameters. If the measurement is outside of specified tolerances and a binary threshold algorithm is used, the beam will be paused. Given instrumentation and statistical noise such a system can lead to many pauses which could increase the treatment time ...
Benjamin M, Clasie +2 more
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Economic designs of constrained EWMA and combined EWMA-X¯ control schemes
IIE Transactions, 2001Abstract This research presents a comparison between the cost performance of the Exponentially Weighted Moving Average EWMA) and the combined EWMA-X¯ control chart schemes. In particular, we explore the impact of constraining the in-control average run length on the optimal cost performance of both schemes.
GILBERT O. TOLLEY, JOHN R. ENGLISH
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Journal of Quality Technology, 1998
An exponentially weighted moving average control chart for monitoring Poisson data is introduced. The charting procedure is evaluated using a Markov chain approximation, and its average run length is compared to other procedures for Poisson data. Figure..
Borror, Connie M. +2 more
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An exponentially weighted moving average control chart for monitoring Poisson data is introduced. The charting procedure is evaluated using a Markov chain approximation, and its average run length is compared to other procedures for Poisson data. Figure..
Borror, Connie M. +2 more
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Communications in Statistics - Simulation and Computation, 2004
We propose a new charting procedure, combining two or more Exponentially Weighted Moving Averages (EWMAs), which we call a Composite EWMA (CEWMA) Control Chart. In the case of two EWMAs, the CEWMA chart corresponds to the usual combined Shewhart-EWMA chart, although our plotting procedure remain, we feel, an improvement in application and ...
Lingyun Zhang +3 more
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We propose a new charting procedure, combining two or more Exponentially Weighted Moving Averages (EWMAs), which we call a Composite EWMA (CEWMA) Control Chart. In the case of two EWMAs, the CEWMA chart corresponds to the usual combined Shewhart-EWMA chart, although our plotting procedure remain, we feel, an improvement in application and ...
Lingyun Zhang +3 more
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Quality Technology & Quantitative Management, 2021
In this article, we first propose an exponentially weighted moving average (EWMA) chart for monitoring both the shape and scale parameters of the Weibull distribution.
Longcheen Huwang +2 more
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In this article, we first propose an exponentially weighted moving average (EWMA) chart for monitoring both the shape and scale parameters of the Weibull distribution.
Longcheen Huwang +2 more
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1992
The control problem of a production process with output Y(t) = M(t) + e(t) (e(t) being a white noise function with E(e(t)) = σ2 for all time points and M(t) := E(Y(t))) can be considered as the problem of monitoring the unknown expectation function M(t).
Joseph J. Hoegel, Hans W. Wolff
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The control problem of a production process with output Y(t) = M(t) + e(t) (e(t) being a white noise function with E(e(t)) = σ2 for all time points and M(t) := E(Y(t))) can be considered as the problem of monitoring the unknown expectation function M(t).
Joseph J. Hoegel, Hans W. Wolff
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