Hi,
i have a theoretical question regarding controller design using bode, nyquist, and root locus. I can't seem to think of any additional benefit of using the nyquist and root locus plots over the bode. IIRC, the nyquist and root locus plot the closed loop response, while the bode is more for open loop. but in that case, wouldn't the advantage be to design in either nyquist or root locus, since a stable closed loop system would mean the open loop is inherently stable, unlike a stable open loop system, which may become unstable when the loop becomes closed. but at the same time, i think the design (finding the gain/phase margins with bode is alot simpler).
Does anyone have any other insight on when we should use one over the other?
tia
i have a theoretical question regarding controller design using bode, nyquist, and root locus. I can't seem to think of any additional benefit of using the nyquist and root locus plots over the bode. IIRC, the nyquist and root locus plot the closed loop response, while the bode is more for open loop. but in that case, wouldn't the advantage be to design in either nyquist or root locus, since a stable closed loop system would mean the open loop is inherently stable, unlike a stable open loop system, which may become unstable when the loop becomes closed. but at the same time, i think the design (finding the gain/phase margins with bode is alot simpler).
Does anyone have any other insight on when we should use one over the other?
tia