Timeline for Phase margin is 90° but transient step response shows overshoot
Current License: CC BY-SA 4.0
5 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Aug 19, 2022 at 1:32 | comment | added | jp314 | Bode Analyses includes all delay effects in a linear system. Of course the loop has to be broken in a suitable location, or appropriate corrections/calculations applied. | |
| Sep 13, 2019 at 18:28 | comment | added | MAM | Yes ofcourse. I agree that frequency response is done on a linearised model. However, this is not what this answer is about and what I am questioning. Christobol refers to delay thru the opamp which should be characterised in the linear model etc? | |
| Sep 13, 2019 at 17:32 | comment | added | WhatRoughBeast | @AdilMalik - No, loop analysis essentially looks at the response to a CW sine wave after all perturbations have died out. You are looking at a step response, where the effects of the higher-frequency non-linearities are still in force. | |
| Sep 13, 2019 at 14:38 | comment | added | MAM | Surely, loop analysis characterizes precisely all of that..? | |
| Sep 13, 2019 at 14:23 | history | answered | Cristobol Polychronopolis | CC BY-SA 4.0 |