Anti-disturbance control for dynamic positioning system of ships with disturbances

作者：

Highlights：

• The unknown time-varying disturbances are generated by an exogenous system with Gauss white noise, which can better reflect the reality and complexity of the sea state.

• The disturbance is evaluated by a disturbance observer, based on the evaluation, it is compensated in the feed-forward channel by combing with the traditional feedback controller. Thus, the controller in this thesis has higher control accuracy.

• The pole placement method combining with stochastic stability theory are used to the research of the anti-disturbance control for the DP system of ships. And the states of the composite system are asymptotically mean-square bounded.

摘要

•The unknown time-varying disturbances are generated by an exogenous system with Gauss white noise, which can better reflect the reality and complexity of the sea state.•The disturbance is evaluated by a disturbance observer, based on the evaluation, it is compensated in the feed-forward channel by combing with the traditional feedback controller. Thus, the controller in this thesis has higher control accuracy.•The pole placement method combining with stochastic stability theory are used to the research of the anti-disturbance control for the DP system of ships. And the states of the composite system are asymptotically mean-square bounded.

论文关键词：Anti-disturbance control,Unknown time-varying disturbances,Dynamic positioning system,Disturbance observer

论文评审过程：Received 1 July 2020, Revised 22 November 2020, Accepted 19 December 2020, Available online 5 January 2021, Version of Record 5 January 2021.

论文官网地址：https://doi.org/10.1016/j.amc.2020.125929