Stabilization and optimal decay rate for a non-homogeneous rotating body-beam with dynamic boundary controls

Boumediène Chentouf*, Jun Min Wang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

32 Citations (Scopus)


In this paper, we consider the boundary stabilization of a flexible beam attached to the center of a rigid disk. The disk rotates with a non-uniform angular velocity while the beam has non-homogeneous spatial coefficients. To stabilize the system, we propose a feedback law which consists of a control torque applied on the disk and either a dynamic boundary control moment or a dynamic boundary control force or both of them applied at the free end of the beam. By the frequency multiplier method, we show that no matter how non-homogeneous the beam is, and no matter how the angular velocity is varying but not exceeding a certain bound, the nonlinear closed loop system is always exponential stable. Furthermore, by the spectral analysis method, it is shown that the closed loop system with uniform angular velocity has a sequence of generalized eigenfunctions, which form a Riesz basis for the state space, and hence the spectrum-determined growth condition as well as the optimal decay rate are obtained.

Original languageEnglish
Pages (from-to)667-691
Number of pages25
JournalJournal of Mathematical Analysis and Applications
Issue number2
Publication statusPublished - Jun 15 2006


  • Dynamic boundary control
  • Exponential stability
  • Frequency multiplier method
  • Non-homogeneous coefficients
  • Riesz basis
  • Rotating body-beam
  • Spectral analysis

ASJC Scopus subject areas

  • Analysis
  • Applied Mathematics


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