engleski

Estimation of process sigma level

The calculation (estimation) of the process б-level has been particularly updated with the appearance of „“Six Sigma“. In order to reliably estimate б-level it is necessary to monitor the process (a characteristic of process / product) with the application of appropriate control chart. The basic parameter for the estimation of б-level is the process capability index Cp which is estimated from the scattering chart of the applied control chart. It is important to point out that the estimated б-level presupposes only potential б-level that can be achieved by eliminating the causes of the so-called static shift of the controlled characteristic. The transition to a higher б-level is only possible under intervention in one of the general causes of process variability.

sigma level; process capability; control charts

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