How PID diagrams distinguish between simple control and cascade control
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Why is Figure 1 a single-loop control system, and why is Figure 2 a cascade control system? I seek guidance from those with more experience
In a PID diagram, simple control usually involves only one controller that directly regulates a process variable. Cascade control involves two or more controllers, with the output of one controller serving as the setpoint for another controller. In Figure 2, if it is a cascade control system, two controllers may be shown, with the output of one controller connected to the input of the other, thus forming a hierarchical control loop. If such a configuration can be seen, then Figure 2 represents cascade control. .