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Stable vs. Unstable vs. Oscillation 본문
1. 이론적 배경
Barkhausen Criterion, Nyquist Stability Criterion은 Stable과 Unstable을 판별하는 기준이다.
즉, 이 둘은 Oscillation의 필수조건에 해당한다고 할 수 있다.
Barkhausen's criterion is a necessary condition for oscillation but not a sufficient condition: some circuits satisfy the criterion but do not oscillate.[5] Similarly, the Nyquist stability criterion also indicates instability but is silent about oscillation. Apparently there is not a compact formulation of an oscillation criterion that is both necessary and sufficient.[6]
Barkhausen stability criterion - Wikipedia
From Wikipedia, the free encyclopedia For the noise in the output of a ferromagnet upon a change in the magnetizing force, see Barkhausen effect. Block diagram of a feedback oscillator circuit to which the Barkhausen criterion applies. It consists of an am
en.wikipedia.org
2. Unstable vs. Oscillation
If a control system is unstable does it mean it will oscillate?
When a plant is known to be unstable, does it mean it will have an oscillation response?
engineering.stackexchange.com
3. Potentially Unstable vs. Unconditionally Stable
A transistor that is not unconditionally stable is usually described as a “potentially unstable” device.
Potentially Unstable ∋ Oscillation, Unstable, Conditionally Stable
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