jaydnul
Newbie level 6
Starting with an open loop system, you specific frequency gain and phase response plots. If you provide negative feedback, then that plot then gets split in half. The top portion is the loop gain and the bottom portion is the closed loop system response. When you do stability analysis, it is optimizing the phase and gain margin of the loop gain response, but what does that do to the closed loop response plot? At the end of the you excite the input of the closed loop system and measure an output from the closed loop system, but the phase and gain margin of the LOOP bode plots effect how good that response will be. So it seems like the loop phase and gain margin have some sort of the meaning for the closed loop response bode plots.
Thanks
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