Journal of Ocean Engineering and Technology (한국해양공학회지)

Korean Society of Ocean Engineers (한국해양공학회)
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Depth Control of an Autonomous Underwater Vehicle with System Uncertainties Based on Discrete Variable Structure System

이산 가변구조제어기를 이용한 자율무인잠수정의 심도제어

  • 이판묵 (한국기계연구원 선박해양공학연구센터) ;
  • 홍석원 (한국기계연구원 선박해양공학연구센터) ;
  • 전봉환 (한국기계연구원 선박해양공학연구센터)
  • Published : 1997.11.01
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Abstract

This paper presents a discrete-time sliding mode control of an autonomous underwater vehicle with parameter uncertainties and long sample interval based on discrete variable structure system. Although conventional sliding mode montrol techniques are robust to system uncertainties, in the case of the system with long sample interval, the sliding control system reveals chattering phenomenon and even makes the system unstable. This paper considers the AUV which acquires position informations from a surface ship through an acoustic telemetry system with a certain discrete interval. The control system is designed on the basis of a Lyapunov function and a sufficient condition of the switching gain to make the system stable is give. Each component of the switching gain can be determined separately one another. The controller is robust to the uncertainties, and reaching condition of the control system is satisfied for any initial condition. This control law is a generalized form of the discrete sliding mode control and reduce the chattering problem considerably. Motion control of the AUV in the vertical plane shows the effectiveness of the proposed technique.

Keywords

References

  1. IEEE J. of Ocean Eng. v.OE-10 no.4 Robust trajectory control of underwater vehicles Yoerger, D.R.;Slotine, J.-J.E.
  2. IEEE J. of Ocean Eng. v.15 no.3 Adaptive sliding mode control of autonomous underwater vehicles in the dive plane Cristi, R.;Papolulias, F.A.;Healey, A.J.
  3. 한국해양공학회지 v.6 no.1 Design of experimental evaluation of sliding mode controller for nonlinear autonomous underwater vehicle Sur, J.N.;Seo, Y.T.
  4. Applied Nonlinear Control Slotine, J.-J.;Li, W.
  5. Automatic Remote Control v.46 General condition for the existence of a quasisliding mode on the switching hyperpalne in discrete variable structure systems Milosavljevic, C.
  6. IEEE Tr. on Automatic Control v.AC-32 no.10 On the stablility of discrete-time sliding mode control systems Sarpturk, S.Z.;Istefanopulos, Y.;Kaynak, O.
  7. IEEE Tr. on Automatic Control v.34 no.9 Comments on the stability of discrete-time sliding mode control systems Kotta, U.
  8. Systems and Control Letters v.14 Sliding mode control of a discrete system Furuta, K.
  9. Systems and Control Letters v.17 Servo-systems with discrete-varible structure control Chan, C.Y.
  10. Int. J. Control. v.54 no.5 Non-linear discrete varible structures systems in quasi-sliding mode Sira-Ramirez, H.
  11. IEEE Proc.-D v.139 no.5 Design of servocontroller via the sliding mode technique Hwang, C.L.
  12. IEEE Proc.-D v.140 no.2 Discrete sliding mode control of a coupled-derives apparatus with optimal slinding surface and switching gain Pieper, J.K.;Surgenor, B.W.
  13. Automatica v.31 no.10 Robust discrete quasi-sliding mode tracking controller Chan C.Y.
  14. Proc. of American Control Conference IEEE Tr. on Automatic Control Observer based discrete-time sliding mode control with computational time delay Misawa, E.A.
  15. Int. J. Control v.62 no.1 Robust control of discretized continous systems using the theory of sliding modes Tesfaye, A.;Tomizuka, M.
  16. IEEE Tr. on Industrial Electronics v.40 no.1 Variable structure control : a survey Hung, J.Y.;Gao, W.;Hung, J.C.