Self-excited vibration

One speaks of self-excited oscillation when the energy supply is controlled by a suitable control element and the oscillation process itself. Mathematically, such an energy supply can be realized, for example, by a special damping term in which the damping can become negative. Such a system is mostly non-linear. An example of this is the van der Pol oscillator .

Examples

• Self-excited oscillation in the harmonic oscillator
• Aeroelstic flutter (aircraft wing)
• Collapse of the Tacoma Narrows Bridge
• Violin string
• bell
• Clock
• Radio station

See also

• Feedback

Web links

• IPU engineering companies in Berlin, Braunschweig and Karlsruhe, wind engineering, self-excited vibrations

Individual evidence

1. ↑ ^{a b c d e} Kurt Magnus, Karl Popp, Walter Sextro: Vibrations: An introduction to the physical principles and the theoretical treatment of vibration problems . 8th, revised edition. Vieweg + Teubner Verlag / GWV Fachverlage GmbH, Wiesbaden, Wiesbaden 2008, ISBN 978-3-8351-9227-0 .