Input-process-output (I-P-O) is a structured methodology ... in doing so creating models analogous to closed-loop control ...

Industrial control systems can be categorized in two types: open-loop and closed-loop systems. The open-loop control system is a continuous control system that provides no feedback from its output.

a mechanical control system is made up of moving parts. However, the simple flow chart of Input, process, and output are still used to visualise how the system performs. With mechanical control ...

The intended result is little or no change in the reactor inlet temperature (the CV)-the primary benefit of all APC-a reduction in process variance. Initially, feedforward control was implemented ...

Once documented, the input variables can be assessed for their impact on output variation reduction and then prioritized as KPIVs. Desensitize and Control Your Product or Process Output Variation ...