Closed-loop performance
PID control applications - Temperature and position control

Closed-loop performance is evaluated by carrying out tests characterizing the transient regime of the measurement y, when the setpoint y _d' varies.

• The indicial test (or step test) in a closed loop (figure 4 ) consists in abruptly changing the setpoint y _d (y _d is a step), starting from a steady state, and observing the transient state of the y measurement.

  This transient regime (figure 4 ) is characterized...