DYNAMIC LOSS OF STABILITY IN DEPTH CONTROL OF SUBMERSIBLE VEHICLES

Control of a modern submarine is a multi-dimensional dynamical problem coupling considerations of initial static stability, hydrodynamic performance, and control system response. In this paper, the loss of stability at moderate-to-high speeds is examined using a nonlinear Hopf bifurcation analysis. Complete linear state feedback is used for demonstration purposes for depth control at level attitude and for a fixed nominal speed. The control time constant, the nominal and actual speeds, the metacentric height, and the stern-to-bow-plane ratio are used as the main bifurcation parameters. A complete local bifurcation mapping provides a systematic method for evaluating the bounds of controllability for the control system design parameters for a vehicle with a given set of hydrodynamic coefficients. The submarine and its potential design modifications are verified with direct numerical simulations.

  • Supplemental Notes:
    • Applied Ocean Res, v 17 n 4, Aug 1995, p 205 [11 p, 20 ref, 2 tab, 15 fig]
  • Authors:
    • Papoulias, F A
    • Bateman, C A
    • Ornek, S
  • Publication Date: 1995

Language

  • English

Subject/Index Terms

Filing Info

  • Accession Number: 00728010
  • Record Type: Publication
  • Source Agency: British Maritime Technology
  • Files: TRIS
  • Created Date: Nov 4 1996 12:00AM