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Active Control of Vibrational Intensity in a Compound Vibratory System  

Kim, Gi-Man (Dept.of Machanical Engineering, Kumoh National Institute of Technology)
Publication Information
Journal of the Korean Society for Precision Engineering / v.19, no.6, 2002 , pp. 109-118 More about this Journal
Abstract
The vibrational intensity and the dynamic response of a compound vibratory system had been controlled actively by means of a feedforward control method. A compound vibratory system consists of a flexible beam and two discrete systems - a vibrating source and a dynamic absorber. By considering the interactive motions between discrete systems and a flexible beam, the equations of motion for a compound vibratory system were derived using a method of variation of parameters. To define the optimal conditions of a controller the cost function, which denotes a time averaged power flow, was evaluated numerically. The possibility of reductions of both of vibrational intensity and dynamic response at a control point located at a distance from a source were fecund to depend on the positions of a source, a control point and a controller. Especially the presence of a dynamic absorber gives the more reduction on the dynamic response but the less on the vibrational intensity than those without a dynamic absorber.
Keywords
Vibrational intensity; a method of variation of parameters; feedforward control method;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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