control.matlab.bode

control.matlab.bode(sys[, omega, dB, Hz, deg, ...])[source]

Bode plot of the frequency response.

Plots a bode gain and phase diagram.

Parameters:

sysLTI, or list of LTI: System for which the Bode response is plotted and give. Optionally a list of systems can be entered, or several systems can be specified (i.e. several parameters). The sys arguments may also be interspersed with format strings. A frequency argument (array_like) may also be added (see Examples).
omegaarray: Range of frequencies in rad/s.
dBboolean: If True, plot result in dB.
Hzboolean: If True, plot frequency in Hz (omega must be provided in rad/sec).
degboolean: If True, return phase in degrees (else radians).
plotboolean: If True, plot magnitude and phase.

Returns:

mag, phase, omegaarray: Magnitude, phase, and frequencies represented in the Bode plot.

Examples

>>> from control.matlab import ss, bode

>>> sys = ss([[1, -2], [3, -4]], [[5], [7]], [[6, 8]], 9)
>>> mag, phase, omega = bode(sys)
>>> bode(sys, w)                  # one system, freq vector 
>>> bode(sys1, sys2, ..., sysN)   # several systems         
>>> bode(sys1, sys2, ..., sysN, w)                          
>>> bode(sys1, 'plotstyle1', ..., sysN, 'plotstyleN')       