parametric excitation การใช้

• Usually, the latter one is used in combination with a controlled parametric excitation.
• Parametric excitation differs from forcing since the action appears as a time varying modification on a system parameter.
• Parametric excitation differs from forcing, since the action appears as a time varying modification on a system parameter.
• The Mathieu equation describes many other physical systems to a sinusoidal parametric excitation such as an LC Circuit where the capacitor plates move sinusoidally.
• The converse conclusion is that any form of parametric excitation can be accomplished by varying either the resonance frequency or the damping, or both.
• Without a compensating energy-loss mechanism provided by \ beta, the oscillation amplitude grows exponentially . ( This phenomenon is called "'parametric excitation "', "'parametric resonance "'or "'parametric pumping "'. ) However, if the initial amplitude is zero, it will remain so; this distinguishes it from the non-parametric resonance of driven simple harmonic oscillators, in which the amplitude grows linearly in time regardless of the initial state.