Cascade Control: Improving Disturbance Rejection Through Advanced PID Control


There’s a common misconception in various corners of the process industries related to advanced process control (APC). When the topic of APC is raised it’s not uncommon for practitioners to immediately think of complex fuzzy logic and model predictive solutions. But a broader view of APC also includes advanced applications of the Proportional Integral Derivative (PID) controller. Chief among those APC solutions both used in industry and based on the PID is Cascade Control.