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**Topic under **Control Mode

**Source:** www.coe.montana.edu

**File size:** **62.53 KB**

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**Last download on:**
Tue Apr 10, 2018 06:40:11 AM

__Short Desciption__:

PID controllers do not require advanced mathematics to design and can be easily ... A PID controller can also be purchased for industrial uses as a panel-mounted controller.

__Summary__:

A proportional-integral-derivative controller (PID controller) is a
common feedback loop component in industrial control systems (see also
control theory).
The controller takes a measured value from a process or other apparatus
and compares it with a reference setpoint value. The difference (or
"error" signal) is then used to adjust some input to the process in order to
bring the process' measured value back to its desired setpoint. Unlike
simpler controllers, the PID can adjust process outputs based on the
history and rate of change of the error signal, which gives more accurate
and stable control. PID controllers do not require advanced mathematics
to design and can be easily adjusted (or "tuned") to the desired application, unlike more complicated control algorithms based on
optimal control theory.
A traditional PID controller

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