Advanced Process Control (APC)

Advanced process control uses model-based techniques — most commonly model predictive control (MPC) — to run a process closer to its optimal limits than basic PID loops allow, improving yield, energy use and stability while respecting constraints.

Basic control keeps each loop at a set-point; APC coordinates many variables at once, predicting how the process will respond and moving set-points to optimise an objective (throughput, energy, quality) without violating limits. Model predictive control is the workhorse. APC is one of the highest-return digital investments in continuous processes such as refining, chemicals and cement, often paying back in months.

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