Resonance control for a forced single-degree-of-freedom nonlinear system
- Publication Type:
- Journal Article
- Citation:
- International Journal of Bifurcation and Chaos in Applied Sciences and Engineering, 2004, 14 (4), pp. 1423 - 1429
- Issue Date:
- 2004-01-01
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The main characteristic of a forced single-degree-of-freedom weakly nonlinear system is determined by its primary, super- and sub-harmonic resonances. A nonlinear parametric feedback control is proposed to modify the steady-state resonance responses, thus to reduce the amplitude of the response and to eliminate the saddle-node bifurcations that take place in the resonance responses. The nonlinear gain of the feedback control is determined by analyzing the bifurcation diagrams associated with the corresponding frequency-response equation, from the singularity theory approach. It is shown by illustrative examples that the proposed nonlinear feedback is effective for controlling three kinds of resonance responses.
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