Abstract
Analysis of a system’s frequency response is a powerful tool to predict the behavior of a control system. In fact, frequency-domain analysis allows to conclude closed-loop stability from the open-loop frequency response. When the input to a linear system is a sinusoid, its output is a sinusoid of the same frequency, but with different amplitude and phase. Amplitude and phase as functions of the frequency can be plotted in Nyquist- and Bode-diagrams. Particularly in Bode diagrams, the concept of gain and phase margin give rise to the notion of relative stability, that is, how much variation of process parameters is allowable before a feedback control system turns unstable. Similar insights are gained from the Nyquist criterion, which allows to conclude from the loop gain to the presence of closed-loop poles in the right half-plane.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
