Journal of Dalian Maritime University >

2015 , Vol. 41 >Issue 3: 29 - 33

DOI: https://doi.org/10.16411/j.cnki.issn1006-7736.2015.03.006

Research and application of a thrust allocation in ship dynamic positioning system

  • BAN Bo ,
  • LUO Yan ,
  • YE Bao-yu ,
  • WANG Qin-ruo
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  • (1. Automation School, Guangdong University of Technology, Guangzhou 510006, China; 2. Guangzhou Civil Aviation College, Guangzhou 510403, China)

Received date: 2014-08-29

  Revised date: 2014-10-23

  Online published: 2014-10-23

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Abstract

Thrust allocation, also known as power distribution, is used to distribute the order force or moment of controller to each propeller, as one of the key technologies in the ship dynamic positioning system(DSP). It is a puzzling and can not be ignored matter to actualize a high efficient thrust allocation strategy with a fast tracking speed in order to achieving ship’s fast dynamic positioning. The proposal calculating angle and thrusting based on pseudo-inverse algorithm were adopted to solve angle distribution and amplitude distribution of that propeller, which has an adjustable angle with a constraint direction, namely fast optimization for multi-parameter with constrained. Experimental results show that the force attenuation between two adjacent propellers could be avoided effectively, the disadvantages in multi-singular-value, repeated iterations, and slow convergence speed of the other algorithms were improved and a thrust allocation with a rapid calculation, stability and high efficiency was implemented. In view of the simplicity and reliability of this algorithm, it is easy to implement on ship and more suitable for the ship with high-speed positioning.

Key words： ship; thrust allocation; dynamic positioning system; pseudo-inverse algorithm; direction angle constraint

Cite this article

BAN Bo , LUO Yan , YE Bao-yu , WANG Qin-ruo . Research and application of a thrust allocation in ship dynamic positioning system[J]. Journal of Dalian Maritime University, 2015 , 41(3) : 29 -33 . DOI: 10.16411/j.cnki.issn1006-7736.2015.03.006

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