Natural and Fundamental Frequencies

AI Thread Summary
Natural frequencies differ from the fundamental frequency, as they pertain to the transient behavior of linear systems. When identifying natural frequencies above the fundamental, it can be challenging to determine if any have been overlooked. The distinction between natural and harmonic frequencies is crucial, particularly in systems driven by non-sinusoidal waveforms. Harmonic frequencies emerge in the steady state of linear systems, while natural frequencies are inherent to the system's dynamics. Understanding these concepts is essential for accurate frequency analysis in engineering applications.
duoheer
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How could you tell if you had missed one of the natural frequencies when you were finding natural frequencies above the fundamental? thnx a lot
 
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duoheer said:
How could you tell if you had missed one of the natural frequencies when you were finding natural frequencies above the fundamental? thnx a lot
Natural frequencies and fundamental frequency are different concepts. Natural frequencies are characteristics of linear systems and are associated with the transient behaviour of the system.
Fundamental and harmonic frequencies appear in the steady state of a linear system excited by a non sinusoidal periodic waveform (like a square wave) or a nonlinear system excited by a sinusoid.
 
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