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Concept of feedback coupling in dynamics of mechanical systems and dynamical damping of oscillations
Engineering Education # 05, May 2012
DOI: 10.7463/0512.0378353
The authors propose a methodical foundation of estimation and research of origination of dynamical damping of oscillations for tasks of vibration protection of machines and equipment. The novelty of the approach consists of using a new class of mathematical models for mechanical systems; these models represent structural schemes as the equivalent of dynamic systems of automatic control. The authors consider questions of scientific substantiation of structural transformations of mathematical models with selection of feedback couplings, inherent in elastic oscillation systems. A dynamical oscillation damper in the vibration protection system within the framework of the developing concept was considered as feedback of a certain type. The authors propose a technology of detection of dynamical damping of frequencies in systems with several degrees of freedom. The authors show possibilities of improvement of the “dynamical damping of oscillations” concept the physical meaning of which essentially depends on the choice of synthesis coordinates. The authors propose a synthesis method for building vibration protection systems with dynamical absorbers of oscillations. The numeric simulation and laboratory experiment results are included in the article.
About creature of structural models of vibroprotection systems with dynamical absorber
Engineering Education # 08, August 2011
Questions of building of mathematical models of dynamical absorbers as additional feed beck ties in vibroprotection systems are considered in difference from usual ideas the structure of  original model of protection of object. Nase big influence on parameters on conditions of dynamical absorbtion; it is depend from particulates of structure of system of external forces.
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