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1 Bulletin of the Polish Academy of Sciences. Technical Sciences

1 2014

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Design of the oscillatory systems with the extremal dynamic properties

Górecki H., Zaczyk M.

Bulletin of the Polish Academy of Sciences. Technical Sciences

2014

Vol. 62, nr 2

241--253

In this article the problem of determination of such coefficients a1, a2, ..., an and eigenvalues s1, s2, ..., sn of the characteristic equation which yield required extremal values of the solution x(t) at the extremal value τ of time is solved. The extremal values of x(τ ) and τ are treated as functions of the roots s1, s2, ..., sn. The analytical formulae enable us to design the systems with prescribed dynamic properties. For solution of the problem the properties of symmetrical equations are used. The method is illustrated by an example of the equation of 4-th degree. The regions of the different kinds of the roots: real, with one pair of complex and two pairs of complex roots are illustrated. A practical problem is shown.