Gain margin and phase margin in bode plot. The smaller the stability margins, the more fragile stability is. Together, these two numbers give an estimate of the "safety margin" for closed-loop stability. The information in a Bode plot can be used to quantify the stability of a feedback system by using the phase and gain margins. Jul 23, 2025 ยท Figure 1 shows the gain and phase plot. (Virginia Tech Libraries' Open Education Initiative) via source content that was edited to the style and standards of the LibreTexts platform. , 0dB) The frequency of oscillations at [latex]K=K_ {crit} [/latex] can be established from the phase plot as the frequency at which the phase plot crosses over the [latex]-180^ {0} [/latex] line. Systematically learning this knowledge can help you work better in 2025. Their graphical derivation also builds strong frequency domain intuition compared to algebraic techniques. See full list on forumelectrical. Construct an open-loop Bode plot using MatLAB and find the gain and phase margins for the control system. atgsiwv ku5m uhmw9 id1 zwg rcj jcfv hjt tcv1y qxznl