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'''Advanced process control''' (APC) is a broad term within the [[control theory]]. It is composed of different kinds of [[process control]] tools, for example [[model predictive control]] (MPC), [[statical process control]] (SPC), [[Run2Run]] (R2R), [[fault detection control]] (FDC), [[sensor|sensor control]] and [[feedback|feedback systems]]. APC are often used for solving multivariable control problems or discrete control problem.
Normally an APC system is connected to a [[distributed control system]] (DCS). The APC application will calculate moves that are send to regulatory controllers. Historically the interfaces between DCS and APC systems were dedicated software interfaces. Nowadays the communication protocol between these system is managed via the industry standard [[OLE for process control]] (OPC) protocol.
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