Bode plots of PI controller (left) shows the closed-loop gain of three systems. Low phase margin in the open loop (right) correlates to closed-loop peaking (left). The oscilloscope graphs of the Bode plots illustrate how peaking in the closed-loop gain correlates to excessive overshoot.
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Phone Contact Numbers. The NBC phone number list weâve provided below is for the NBC Universal company. This is the mother company of NBC and NBC-affiliated companies. NBC Universal NY: 1-212-664-4444.