PID Control

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:

• Proportional (P); proportional-integral (PI); proportional-derivative (PD); and proportional-integral-derivative (PID) algorithms
• Gain-scheduled PID
• PID autotuning
• Error-squared PID
• Lead-Lag compensation
• Setpoint profile generation
• Multi-loop cascade control
• Feedforward control

Related Information

PID Algorithms

Designing a Control Strategy

Implementing PID Controllers with the PID VIs

Autotuning PID Controllers

Using PID on FPGA Targets