# How does a pid controller work?

## Answer

A PID controller is a term that refers to an industrial control mechanism that measures the difference between the current status of a process and the desired place of arrival, attempting to make adjustments and minimize this error. In its work, the PID controller involves three parameters: the proportional, designating the present error, the integral, pointing the accumulation of past errors and the derivative, anticipating future errors on the basis of the present rate of change. The control elements used in the adjustment process may be the positioning of a control valve, the power provided to the heating element or a damper.
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1 Additional Answer
A pid controller works by using a loop system. It performs mathematical calculations of proportional, integral, and derivative values received by the unit it is attached to. These values are recorded by the controller using a setpoint and error level. The controller then performs calculations and adjustments to attempt to achieve better and smoother performance of the unit. You can find more information at motionsystemdesign.com
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