Bode analysis comprises graphical representations of magnitude and phase information, both plotted as a function of frequency (w). Bode plots clearly illustrate the relative stability of a system. Gain and phase margin requirements of a closed-loop system are often defined in terms of Bode plots.
Bode plots have a variety of applications, including:
•Analysis of system closed-loop performance characteristics
•Determination of resonant frequencies and maximum power amplitude
Bode plots can also be used for the specification and design of compensators.