Equivalent test device for dynamic positioning system of ship in ice area

By using an equivalent test device for the dynamic positioning system of ships in ice areas, using articulated joints and actuators to simulate the ship's degrees of freedom, and combining optical and tactile sensors, the shortcomings of existing simulators in ice areas are solved, and efficient and low-cost ice load data acquisition is achieved, supporting the design and optimization of dynamic positioning systems for ships in ice areas.

CN120793076APending Publication Date: 2025-10-17TIANJIN UNIV
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Patent Information

Application Number
CN202510908608.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-07-02
Publication Date
2025-10-17

AI Technical Summary

Technical Problem

Existing dynamic positioning test simulators are mainly designed for open water environments and are not designed for ice areas. In addition, temporary ice area simulators are costly, time-consuming and not universal, making it difficult to accurately simulate the impact of ice loads on ships.

Method used

An equivalent test device for the dynamic positioning system of ships in ice regions was designed. By coordinating articulated joints and actuators, the sway, surge, and pitch degrees of freedom of the model ship were simulated. Combined with an optical capture system and tactile sensors, the displacement and ice load of the model ship were monitored and adjusted in real time, providing reliable test data.

Benefits of technology

It achieves accurate simulation of the ship dynamic positioning process in an ice environment, reduces experimental costs and time periods, provides universal and reliable test data support, and is suitable for dynamic positioning tests of different types of ships.

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Abstract

The invention provides an equivalent test device of an ice region ship dynamic positioning system. The equivalent test device comprises a model ship arranged in an ice region, a hinge joint, a vertical connecting rod, a box body, a disc, a small actuator, a large actuator, an optical capture system and a computer system. A base of the hinge joint is fixed to the model ship, the upper end of the hinge joint is hinged to the vertical connecting rod, and the vertical connecting rod penetrates through the box body and is in rigid connection with the box body. The small-sized actuator comprises a small-sized motor, a small-sized telescopic rod driven by the small-sized motor and a bolt at the end part of the small-sized telescopic rod; the disc is fixedly connected to the vertical connecting rod; an eccentric hole is formed in the disc, and the small actuator penetrates through the eccentric hole through a plug pin to be connected with the disc. The box body is connected with a large actuator; the large actuator comprises a large motor and a large telescopic rod which are fixed on the fixed pile; the computer system generates output signals according to displacement data measured by the optical capturing system, controls the large actuator and the small actuator to work respectively, and adjusts the position and the angle of the ship model.
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