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Modeling and analysis of active dampers in periodic working environments

Research output: Contribution to journalArticle

Original languageEnglish
Pages (from-to)2404 - 2416
Number of pages13
JournalAIAA Journal
Issue number10
DatePublished - Oct 2009


This paper develops the concept of the semi-active hydraulic damper representing the control component assumed to be located in the periodic working environment. The assumption of the periodic working environment is applicable for a wide range of vibration-related applications. Within a specified framework, a reduced-order physically based mathematical model of the damper is established using realistic assumptions and concepts from the hydraulic system theory. A general need for damper activity parameterization is considered, retaining the periodic nature of the application, and the two specific parameterization instances are considered: a local piecewise polynomial and a global multiharmonic activity parameterization. This device is further demonstrat ed in simulated case studies based on realistic values of physical devices. The activity of the damper is assumed to be based on the periodic modulation of the size of the flow restrictor located between two working chambers of the damper. The general physical effects associated with the damper operation in this working mode are investigated and explained for both types of damper activity parameterisations.

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Publisher: AIAA

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