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Charts for Optimal Feedback Control with Recursive Sampling and Adjustment
A cost model proposed by Box and Jenkins (1963) and later generalized by Box and Kramer (1992) for obtaining minimum cost for feedback control of processes is considered. Unfortunately, it is sometimes difficult to assign ...
Influence of the Sampling Interval, Decision Limit and Autocorrelation on the Average Run Length in Cusum Charts
This paper shows how the average run length (ARL) for a one-sided Cusum chart varies as a function of the length of the sampling interval between consecutive observations, the decision limit for the Cusum statistic, and ...
The Anatomy and Robustness of Discrete Proportional -Integral Adjustment and Its Application to Statistical Process Control
This paper explains the nature and importance of Proportional-Integral control and shows how it may be adapted to Statistical Process Control. The relation of this type of control to exponential smoothing, minimum mean ...
Discrete Proportional-Integral Control with Constrained Adjustment
It is well known that discrete feedback control schemes chosen to produce minimum mean square error at the output can require excessive manipulation of the compensating variable. Also very large reductions in the manipulation ...
Choice of Repeated and Bounded Adjustment Schemes
An important problem in process adjustment using feedback is how often to sample the process and when and by how much to apply an adjustment. Minimum-cost feedback schemes based on simple, but practically interesting, ...