PID controler
Sign in to saveAlso known as proportional-integral-derivative controller
control loop mechanism used in control engineering based on three terms (P, I and D)
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Encyclopedic overview
A proportional–integral–derivative (PID) controller, or three-term controller, is a feedback-based control loop mechanism commonly used to manage machines and processes that require continuous control and automatic adjustment. It is typically used in industrial control systems and various other applications where constant control through modulation is necessary without human intervention. The PID controller automatically compares the desired target value (setpoint or SP) with the actual value of the system (process variable or PV). The difference between these two values is called the error value, denoted as
e ( t )
Excerpted from Wikipedia’s “PID controler” article, available under the CC BY-SA 4.0 licence.