文献类型：期刊文献

英文题名：Iterative Sliding Mode-Based Output Feedback Control for the Dynamic Positioning of Ships

作者：Chen, Haili[1];Ren, Hongxiang[1];Bu, Renxiang[1];Li, Ronghui[2];Guan, Wei[1]

机构：[1]Dalian Maritime Univ, Nav Coll, Dalian 116026, Peoples R China;[2]Guangdong Ocean Univ, Maritime Coll, Zhanjiang, Peoples R China

年份：2021

卷号：55

期号：5

起止页码：70

外文期刊名：MARINE TECHNOLOGY SOCIETY JOURNAL

收录：SCI-EXPANDED(收录号：WOS:000715297200007)、、EI(收录号：20214611151410)、Scopus(收录号：2-s2.0-85118823321)、WOS

基金：This study is funded by the National Natural Science Foundation of China (Grant Nos. 51409033 and 51679024), shipping joint fund project of the Natural Science Foundation of Liaoning Province (Grant No. 2020-HYLH-29), National High Technology Research and Development Program of China (Grant No. 2015AA010504), Fundamental Research Funds for the Central Universities (Grant Nos. 3132020372 and 3132020131), and Major Projects of Guangdong Education Department for Foundation Research and Applied Research (Grant No. 2019KZDZX1035). The authors declare that they have no conflict of interest.

语种：英文

外文关键词：DP ship; finite-time state observer; ISM function; output feedback control

外文摘要：Because the velocities of a ship are unmeasured, a novel iterative sliding mode (ISM)-based output feedback control scheme is proposed for the dynamic positioning (DP) of a ship subjected to external environmental disturbances. First, the finite-time state observer is addressed, guaranteeing that estimated errors converge to a small neighborhood of zero in finite time with high precision. Furthermore, based on the outputs of the state observer, an ISM function is given. Then, the output feedback control scheme is designed for the DP of the ship with two remarkable features: (1) an integral item of the sign function exists in the control scheme, which inherently eliminates the chattering of the traditional sliding mode control (SMC), and (2) an integral term of the sliding mode is added to the control scheme, which is helpful in strengthening the transient response with lower overshooting. Finally, simulation studies and quantitative analysis are carried out to demonstrate the superior advantages of the proposed control scheme compared to the proportional-integral-derivative (PID) control scheme and the traditional SMC scheme.