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Proportional-Integral-Derivative (PID) controllers are common feedback controllers. In PID control, you specify a process variable and a setpoint. The process variable is the system parameter you want to control, such as temperature, pressure, or flow rate, and the setpoint is the desired value for that system parameter. A PID controller determines a controller output value, for example the heater power or valve position, and applies the controller output value to the system to drive the process variable toward the setpoint value.
Use the PID VIs to develop the following control applications based on PID controllers: