control.phase_crossover_frequencies
- control.phase_crossover_frequencies(sys)[source]
Compute Nyquist plot real-axis crossover frequencies and gains.
- Parameters
- sysLTI
SISO LTI system.
- Returns
- omegandarray
1d array of (non-negative) frequencies where Nyquist plot intersects the real axis.
- gainsndarray
1d array of corresponding gains.
Examples
>>> G = ct.tf([1], [1, 2, 3, 4]) >>> x_omega, x_gain = ct.phase_crossover_frequencies(G)