Timeline for Stability and loop gain of negative feedback systems
Current License: CC BY-SA 3.0
7 events
| when toggle format | what | by | license | comment | |
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| Jan 9, 2017 at 0:54 | history | edited | Dave Tweed | CC BY-SA 3.0 |
fix typo
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| Nov 24, 2014 at 7:55 | comment | added | LvW | Dave,you have asked me "why" and I gave you an answer (I agree without too much relevance to the original question, but it was YOUR question). I repeat (just in the interests of accuracy) that a feedback circuit that fulfills Barkhausen does NOT necessarily oscillate. | |
| Nov 23, 2014 at 18:32 | comment | added | Dave Tweed | @LvW: So, you're splitting a hair that has no relevance to the original question. When we're talking about control system stability, it's a given that we're talking about its response to disturbances. If the system meets the Barkhousen condition, it will oscillate in response to any disturbance. | |
| Nov 23, 2014 at 18:26 | comment | added | LvW | Dave, that´s hard to answer because - up to now - there is no oscillation condition that is sufficient (as far as I know). The classical Barkhausen condition is a necessary one only. | |
| Nov 23, 2014 at 16:02 | comment | added | Dave Tweed | @LvW: Why is it not sufficient? What else is required? | |
| Nov 23, 2014 at 15:48 | comment | added | LvW | .... will oscillate. Yes - agreed, in most cases. However, this is a necessary oscillation condition only, and not a sufficient one. | |
| Nov 23, 2014 at 15:30 | history | answered | Dave Tweed | CC BY-SA 3.0 |