Difference between revisions of "Feedback"
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== See also == | == See also == | ||
| + | * [[Control theory]] | ||
* [[Negative feedback]] | * [[Negative feedback]] | ||
* [[Positive feedback]] | * [[Positive feedback]] | ||
Revision as of 06:49, 8 February 2016
Feedback is a phenomenon which occurs when outputs of a system are routed back as inputs.
Description
This process of outputs becoming inputs forms a signal chain of cause-and-effect.
The system can then be said to feed back into itself, forming a closed circuit or loop.
Cause and effect
The notion of cause-and-effect has to be handled carefully when applied to feedback systems:
"Simple causal reasoning about a feedback system is difficult because the first system influences the second and second system influences the first, leading to a circular argument. This makes reasoning based upon cause and effect tricky, and it is necessary to analyze the system as a whole."
See also
External links
- Feedback @ Wikipedia
