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Pragmatical Asymptotical Stability Theorems on Partial Region and for Partial Variables with Applications to Gyroscopic Systems

  • Zheng-Ming Ge (a1) and Jung-Kui Yu (a2)
  • DOI:
  • Published online: 01 May 2011

For a long time, all stability theorems are concerned with the stability of the zero solution of the differential equations of disturbed motion on the whole region of the neighborhood of the origin. But for various problems of dynamical systems, the stability is actually on partial region. In other words, the traditional mathematical model is unmatched with the dynamical reality and artificially sets too strict demand which is unnecessary. Besides, although the stability for many problems of dynamical systems may not be mathematical asymptotical stability, it is actual asymptotical stability — namely “pragmatical asymptotical stability” which can be introduced by the concept of probability. In order to fill the gap between the traditional mathematical model and dynamical reality of various systems, one pragmatical asymptotical stability theorem on partial region and one pragmatical asymptotical stability theorem on partial region for partial variables are given and applications for gyroscope systems are presented.

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13C. O. Chang and L. Z. Liu , “Dynamics and Stability of a Free Precessing Spacecraft Containing a Nutation Damper,” Journal of Guidance ,Control, and Dynamics, Vol. 19, No. 2 (1996).

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Journal of Mechanics
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