What is an expert PID? What is the difference between it and traditional PID?

PID is intelligent control. For example, if you want to control the water flow of a water pipe, you can use a flow meter and a switch valve to let PID control the switch size of the switch valve to ensure the correct water flow.

Expert PID remembers that it is the advanced version of PID Settings, in some cases, the general PID cannot be used, and there are dedicated ones with special functions. This is what I remember. It has been a long time and my memory is not good.