One of the frequently mentioned terms in the world of Computers and Technology is the Process Control PID.
PID stands for Proportional Integral Derivative. Basically, this is how the Process Control PID works:
The setpoint (SP) is merely a value, and that’s the process’ goal. To say that my house has a setpoint of 23°C means that the cooling and heating systems of my house work their way to 23°C.
As for the PID controller, it takes a look at the setpoint and compares this with the Process Variable (PV) value. In the example given above, the PID controller would be the one checking if the temperature in the house is close to 23°C.
When the SP and PV equal each other, the PID controller is pleased because it no longer has to do anything, and therefore displays zero. When they don’t, the PID has to take action. If it is 25°C, the heater will be turned on. If it is a mere 16°C, the air con will turn on.
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