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  2. Phase margin - Wikipedia

    en.wikipedia.org/wiki/Phase_margin

    Phase margin and gain margin are two measures of stability for a feedback control system. They indicate how much the gain or the phase of the system can vary before it becomes unstable. Phase margin is the difference (expressed as a positive number) between 180° and the phase shift where the magnitude of the loop transfer function is 0 dB.

  3. Bode plot - Wikipedia

    en.wikipedia.org/wiki/Bode_plot

    Figures 8 and 9 illustrate the gain margin and phase margin for a different amount of feedback β. The feedback factor is chosen smaller than in Figure 6 or 7, moving the condition | β A OL | = 1 to lower frequency. In this example, 1 / β = 77 dB, and at low frequencies A FB ≈ 77 dB as well. Figure 8 shows the gain plot.

  4. Step response - Wikipedia

    en.wikipedia.org/wiki/Step_response

    Figure 5: Bode gain plot to find phase margin; scales are logarithmic, so labeled separations are multiplicative factors. For example, f 0 dB = βA 0 × f 1. Next, the choice of pole ratio τ 1 /τ 2 is related to the phase margin of the feedback amplifier. [9] The procedure outlined in the Bode plot article is followed. Figure 5 is the Bode ...

  5. Nichols plot - Wikipedia

    en.wikipedia.org/wiki/Nichols_plot

    A Nichols plot. The Nichols plot is a plot used in signal processing and control design, named after American engineer Nathaniel B. Nichols. [1] [2] [3] It plots the phase response versus the response magnitude of a transfer function for any given frequency, and as such is useful in characterizing a system's frequency response.

  6. Group delay and phase delay - Wikipedia

    en.wikipedia.org/wiki/Group_delay_and_phase_delay

    The group delay and phase delay properties of a linear time-invariant (LTI) system are functions of frequency, giving the time from when a frequency component of a time varying physical quantity—for example a voltage signal—appears at the LTI system input, to the time when a copy of that same frequency component—perhaps of a different physical phenomenon—appears at the LTI system output.

  7. Bloomberg Integrates Margin Calculator for Swap Participants

    www.aol.com/news/2013-08-06-bloomberg-integrates...

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  8. Health benefits of rhubarb and how to uniquely include the ...

    www.aol.com/health-benefits-rhubarb-uniquely...

    Rhubarb is a vegetable high in fiber. "[Rhubarb is] rich in fiber, so it really helps with digestion. [It] has a pretty good source of fiber per serving," Wright told Fox News Digital.

  9. Lead–lag compensator - Wikipedia

    en.wikipedia.org/wiki/Lead–lag_compensator

    If the total network phase angle has a combination of positive and negative phase as a function of frequency then it is a lead-lag network. Depending upon the nominal operation design parameters of a system under an active feedback control, a lag or lead network can cause instability and poor speed and response times.