control limits


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control limits

[kən′trōl ‚lim·əts]
(electronics)
In radar evaluation, upper and lower control limits are established at those performance figures within which it is expected that 95% of quality-control samples will fall when the radar is performing normally.
(industrial engineering)
In statistical quality control, the limits of acceptability placed on control charts; parts outside the limits are defective.
References in periodicals archive ?
The air emission control limits now in effect, however, are some of the most stringent in the U.
The control limits, or primary tolerances, are usually expressed as a percentage of the corresponding stencil apertures' theoretical size and location, and can be programmed by a user or set automatically.
By repeating tests of the SRM bullets and cartridge cases at local and state IBIS sites, and correlating the images with the Golden Images established at the ATF, control charts and control limits were developed for quality assurance of ballistics acquisitions and correlations in NIBIN.
x] , E(s) and Std(s) can be found and, therefore, the control limits on [bar.
Three-sigma control charts incorporate control limits computed based on plus or minus three standard errors from the targeted mean or proportion.
z] are out of the control limits of UCL and LCL until the values of [R.
It is clear from this analysis that both mean and control limit improve for process with the closed-loop control.
The control limits for the cumulative sum of the deviations from the target moisture content value are typically set to [+ or -] 4 or [+ or -] 5.
The 1995 law, however, removed all federal speed control limits and left them to the states.
This process average can be considered the centerline of a road and the control limits the edges of the road that we must stay between to avoid running off the road surface.
When using DPMO values, the center line, upper and lower control limits can be calculated:
Comparing the ISRT p-chart with several known p-charts, the minimum sample sizes required for obtaining positive lower control limits for the ISRT p-chart are small.