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Robust Control of Neutral System with Time-Delay for Dynamic Positioning Ships

Author

Listed:
  • Dawei Zhao
  • Fuguang Ding
  • Lili Zhou
  • Wenying Zhang
  • He Xu

Abstract

Due to the input time-delay existing in most thrust systems of the ships, the robust controller is designed for the ship dynamic positioning (DP) system with time-delay. The input delay system is turned to a neutral time-delay system by a state-derivative control law. The less conservative result is derived for the neutral system with state-derivative feedback by the delay-decomposition approach and linear matrix inequality (LMI). Finally, the numerical simulations demonstrate the asymptotic stability and robustness of the controller and verify that the designed DP controller is effective in the varying environment disturbances of wind, waves, and ocean currents.

Suggested Citation

  • Dawei Zhao & Fuguang Ding & Lili Zhou & Wenying Zhang & He Xu, 2015. "Robust Control of Neutral System with Time-Delay for Dynamic Positioning Ships," Mathematical Problems in Engineering, Hindawi, vol. 2015, pages 1-11, March.
    • Handle: RePEc:hin:jnlmpe:976925
    DOI: 10.1155/2015/976925
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