An Improved Method Of Approximating Frequency Characteristics
In The Problem Of Modal Analysis And Its Applications
Author(s)
S. Berczynski, M. Lachowicz, M. Pajor
Abstract
An improved method of approximating
frequency characteristics in the problem of
modal analysis and its applications
S. Berczynski*, M. Lachowicz*, M. Pajor*
Mechanical Technology Institute,
Szczecin Technical University, Poland.
Abstract
The paper presents an improved method and an algorithm of determining modal
parameters of the machine tool model and its application: of continuous
description of dynamic characteristics of models of variable structure and
variable parameters and of damping identification on the basis of approximated
frequency characteristics. The method employs the natural form of the
approximating formula for iterative calculations improving initial estimates of
modal parameters. The algorithm was prepared as a linear programming problem
that is solved in MATLAB system. The effectiveness of the method was
evaluated by the comparison of the obtained results with those found in the effect
of the application of classical methods, integrated in the MATLAB Opti
Keywords
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