2019-01-23
- Itâs getting bigger and bigger, and the rate of increase is accelerating.
- [Positive feedback
- Not to be confused with âpositive feedbackâ in communication.
- Right figure, cases that become smaller and smaller, and the rate of decrease accelerates, are also âpositive feedbackâ cases
- Often misunderstood because of the mood of the word âpositiveâ
- When a value deviates from a reference value, a force is applied that magnifies the deviation (= positive, in the same direction as the direction of the deviation)
- Therefore, both âaccelerating in the direction of increasingâ and âaccelerating in the direction of decreasingâ are positive feedback.
- Conversely, when a deviation from the reference value occurs, a force is applied in the direction to reduce the deviation.
- So, after a deviation due to disturbance, etc., the deviation decreases and returns to the original standard value.
- That is, negative feedback brings [stability
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Some people make the mistake of thinking itâs bad because of the word negative, but it doesnât correspond to good or evil.
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positive return / [negative feedback
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Howling (esp. audio feedback) is an example of Positive feedback.
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The sound that comes in through the microphone is magnified and comes out through the speakers, which are then picked up again by the microphone, developing into a loud sound.
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- Everything that is stable around us involves some form of negative feedback.
- For example, body temperature
- When the body temperature rises, sweat is produced on the body surface to cool down by vaporization heat to lower the temperature.
- When the body temperature drops, the muscles quiver to produce heat and raise the temperature
- homeostasis
- For example, body temperature
relevance - echo chamber - the nail that sticks out gets hammered in - Stability is Depression
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