author={Alejandro Jenkins},
Physicists are very familiar with forced and parametric resonance, but usually not with selfoscillation, a property of certain dynamical systems that gives rise to a great variety of vibrations, both useful and destructive. In a self-oscillator, the driving force is controlled by the oscillation itself so that it acts in phase with the velocity, causing a negative damping that feeds energy into the vibration: no external rate needs to be adjusted to the resonant frequency. A little-known paper… Expand
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