Figure 5. Open-loop step tests of a self-regulating, second-order process, and analysis of one step response with the EnTech toolkit. In this example, there are no “loop response coordination” ...

For example, a “low-pressure ... that when the integral action of the controller is combined with the integrator function of the process, the control loop will oscillate if the integral action of the ...

The control process, therefore, is only affected by the system’s input. Traditionally, electrical control systems were mostly open-loop and required human operators to regulate the process variables ...

“It allows it to be brought down, to let each process loop run better throughout the plant.” That includes, he says, “everything, starting from troublesome single-loop applications to small-dimension, ...