Search results
Results From The WOW.Com Content Network
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.
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.
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 ...
This is a technique used as a stability criterion in the field of classical control theory developed by Walter R. Evans which can determine stability of the system. The root locus plots the poles of the closed loop transfer function in the complex s-plane as a function of a gain parameter (see pole–zero plot).
The open-loop response characteristics applied in a specification are typically Gain and Phase margin and bandwidth. These characteristics may be evaluated through simulation including a dynamic model of the system under control coupled with the compensation model.
Our gross margin was 77.6%, remaining above our long-term target range of 75% to 77%. ... We are world-class in network stability and reliability. And 2025 is the year we will prove we can be ...
Image source: The Motley Fool. General Motors (NYSE: GM) Q4 2024 Earnings Call Jan 28, 2025, 8:30 a.m. ET. Contents: Prepared Remarks. Questions and Answers. Call ...
Image source: The Motley Fool. Lockheed Martin (NYSE: LMT) Q4 2024 Earnings Call Jan 28, 2025, 11:00 a.m. ET. Contents: Prepared Remarks. Questions and Answers. Call Participants