Accession Number : AD0496238

Title :   Self-Excited Mechanical Oscillations.

Descriptive Note : Technical rept.,

Corporate Author : STANFORD UNIV CA

Personal Author(s) : Minorsky, N.

Report Date : 11 JUL 1947

Pagination or Media Count : 8

Abstract : This paper deals with a phenomenon of self-excitation observed in an electromechanical system. It is shown that this phenomenon is expressible in terms of a difference-differential equation, having a frequency spectrum that depends on a parameter. The linear theory fails to give an answer to the question of stability of oscillations. It is necessary for this purpose to make use of the equations of the first approximation of the non-linear theory. Expressions for a stable stationary amplitude and frequency obtained on that basis show an agreement with the observed features of these self-excited oscillations. (Author)

Descriptors :   (*OSCILLATION, HARMONIC ANALYSIS), LINEAR SYSTEMS, NONLINEAR SYSTEMS, MOMENTS, MECHANICAL WAVES, STABILITY, FREQUENCY, DIFFERENTIAL EQUATIONS, RESONANT FREQUENCY, HARMONIC GENERATORS, STABILIZATION SYSTEMS, SHIP HULLS.

Subject Categories : Theoretical Mathematics
      Marine Engineering
      Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE