STATISTICAL PROCESS CONTROL IN CONTINUOUS FLOW PROCESSES—RAMP DISTURBANCE

Abstract

The developments presented in this paper are representative of the recent advances of quality control in continuous flow processes. Specifically, die research presented in English and Case [6] are extended to include the incorporation of ramp input disturbances to the input of a typical continuous flow process subjected to feedback control. The results of the modeling efforts are analyzed based on the value of the Integral of the Absolute Average Error (as developed in [6]) and the average output of the process. It is concluded that the conventional filtering devices are preferred over Statistical Process Control filters when a given continuous flow process is disturbed by random noise in the feedback control loop and the input disturbance is a ramp function.

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