EPC
What is EPC? Engineering Process Control
Background
Linear Feedback Control Systems (see Houpis text; see also the attachment "Closed-loop Transfer Function.pdf")
see Wikipedia article on Control Theory and on Stochastic Control
see Wikipedia article on Closed-Loop Transfer Function
Combination of EPC and SPC - see Statistical Control by Monitoring and Adjustment (Box)
ReferencesStatistical Quality Control (Montgomery),chapter 11