control.matlab.bode

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

Bode plot of the frequency response.

Plots a bode gain and phase diagram.

Parameters
  • sys (LTI, 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, some examples:

    >>> bode(sys, w)                    # one system, freq vector              
    >>> bode(sys1, sys2, ..., sysN)     # several systems                      
    >>> bode(sys1, sys2, ..., sysN, w)                                         
    >>> bode(sys1, 'plotstyle1', ..., sysN, 'plotstyleN') # + plot formats     
    

  • omega (freq_range) – Range of frequencies in rad/s

  • dB (boolean) – If True, plot result in dB

  • Hz (boolean) – If True, plot frequency in Hz (omega must be provided in rad/sec)

  • deg (boolean) – If True, return phase in degrees (else radians)

  • plot (boolean) – If True, plot magnitude and phase

Examples

>>> from control.matlab import ss, bode
>>> sys = ss([[1, -2], [3, -4]], [[5], [7]], [[6, 8]], 9)
>>> mag, phase, omega = bode(sys)

Todo

Document these use cases

  • >>> bode(sys, w)                                      
    
  • >>> bode(sys1, sys2, ..., sysN)                       
    
  • >>> bode(sys1, sys2, ..., sysN, w)                    
    
  • >>> bode(sys1, 'plotstyle1', ..., sysN, 'plotstyleN')