Controller/Process/Test input stacked on the right third, the chosen diagram(s) on the left two-thirds, everything else below.
⋮⋮01Controller C(s)
C(s) = …
Ideal PID form: C(s) = Kp + Ki/s + Kd·s. Switch to Laplace to type any compensator directly.
⋮⋮02Process P(s)
P(s) = …
Write polynomials in s: + - * ^ ( ) and one division, e.g. (s+1)/(s^2+2s+1).
⋮⋮03Test input x(t)
Sine frequency slider sweeps 0.05–50 Hz (log scale) and marks ω on the Bode, phase and Nyquist diagrams even in Step/Ramp mode. Duration auto-fits the dominant time constant unless edited.
⋮⋮04Feedback H(s)
H(s) = …
The feedback path fed back into the summing junction: Z(s) = X(s) − H(s)Y(s). Loop gain L(s) = G(s)H(s) with G(s) = C(s)·P(s); H(s) = 1 is the unity-feedback case.