Effect of Interactions Perspective Tips

Since most unit operations have more than one control loop, interactions can exist where the PID output of one loop affects the PID process variable of another loop and vice versa. Interactions can cause loops to confusingly burst into oscillations. Here is some guidance on how to reduce the consequences and prevent the initiation of interactions. In the process we realize some principles in the design of control strategies for plantwide control. Read the full text.