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Real ship maneuverability index identification method and device based on system identification

A system identification and maneuverability technology, applied in general control systems, control/regulation systems, instruments, etc., can solve the problems of many links, no application system, low efficiency, etc., to achieve intuitive data, reduce abnormal processing time and correct The effect of the effect of accuracy

Active Publication Date: 2020-07-14
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In actual work, it is found that there are few automation and intelligent technologies and application systems specifically for modeling and analysis of ship motion, and the modeling steps of ship motion are cumbersome and inefficient, and cannot well adapt to diverse sea conditions
Most of the algorithms for modeling and parameter identification are applied at the theoretical level, and no convenient and practical application system has been formed, which makes the modeling and verification of ship motion lack convenient tools. Phenomena of many and low efficiency

Method used

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  • Real ship maneuverability index identification method and device based on system identification
  • Real ship maneuverability index identification method and device based on system identification
  • Real ship maneuverability index identification method and device based on system identification

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Embodiment 1

[0078] Such as Figure 1-9 Shown, a kind of method of the real ship maneuverability index identification based on system identification of the present invention comprises the following steps:

[0079] Step 1: Real ship input and output data collection

[0080] The data acquisition system automatically collects the motion state data of the real ship based on the sensor equipment connected in parallel with the real ship and stores it in the memory of the upper computer.

[0081] Step 2: Data Processing

[0082] The host computer processor preprocesses the data stored in step 1, and the processed data is used as the output data of the host computer software system identification; the system determines the ship maneuvering parameters to be identified according to the motion model category; and uses the bat algorithm for parameter identification, the target of the parameters to be identified Function J is:

[0083]

[0084] In the formula, ω k is the error disturbance weight...

Embodiment 2

[0187] Such as Figure 12 As shown, when a system identification-based real ship maneuverability index identification method and device of the present invention are actually used, the device adopts the following method steps:

[0188] Step 1: Real ship input and output data collection

[0189] The data acquisition system automatically collects the motion state data of the real ship based on the sensor equipment connected in parallel with the real ship and stores it in the memory of the upper computer.

[0190] Step 2: Data Processing

[0191] The host computer processor preprocesses the data stored in step 1, and the processed data is used as the output data of the host computer software system identification; the system determines the ship maneuvering parameters to be identified according to the motion model category; and uses the bat algorithm for parameter identification, the target of the parameters to be identified Function J is:

[0192]

[0193] In the formula, ω ...

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Abstract

The invention discloses a real ship maneuverability index identification method and device based on system identification, belongs to the field of ship engineering, navigation science and technology,and comprises a hardware system and a software system, and the identification method comprises the steps of real ship input and output data acquisition, data processing, identification starting and result output. According to the invention, data is collected in parallel; a system model formula is optimized, so that the response time is shortened, the anti-interference capability is high, and a more accurate and stable result can be obtained; due to the modular packaging design, the structure and the process are clear; the method and the device can be used for ship motion modeling and checking;conversion from theory to practical application is completed, ship motion modeling steps are simplified, efficiency is higher, data collection is more accurate and rapid, meanwhile, a large number oftedious manual operation modes and methods are reduced, labor cost and time cost are greatly reduced, the error rate is reduced, man-machine interaction can be achieved, and the method is suitable for various sea conditions, convenient to operate and high in universality.

Description

technical field [0001] The invention belongs to the fields of ship engineering, navigation science and technology, and in particular relates to a method and device for identifying a maneuverability index of a real ship based on system identification. Background technique [0002] The mathematical model of ship maneuvering motion has a wide range of use requirements and technical standards. In order to promote the research and development of ship motion model and ship motion modeling technology to meet theoretical and engineering needs, the task, work content, and work of ship motion modeling Quality, work efficiency and technical means have put forward requirements. In actual work, it is found that there are few automation and intelligent technologies and application systems specifically for modeling and analysis of ship motion, and the modeling steps of ship motion are cumbersome, low in efficiency, and cannot well adapt to diverse sea conditions. The algorithms of modelin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B17/02
CPCG05B17/02
Inventor 田延飞周欣蔚张洪刚温小飞王捷
Owner ZHEJIANG OCEAN UNIV
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