The invention provides a ship rolling motion parameter identification method based on a vibration test. The method comprises the following steps: performing a rolling experiment on a ship model, simulating actual working conditions through a sine excitation experiment to obtain a ship rolling angle and an angular speed, analyzing a result according to an equivalent linearization theory, identifying linear and nonlinear parameters of ship rolling motion, and finally verifying the accuracy of the identified parameters by utilizing Monte Carlo numerical simulation. According to the method, theoretical modeling is carried out on ship rolling motion, experimental analysis and numerical simulation are combined, and rolling parameters of the ship are recognized through a modal parameter recognition and equivalent linearization method. The method can be used for guiding ship design and realizing ship stabilization, and the result has high theoretical research value and practical significance.
本发明提出一种基于振动测试的船舶横摇运动参数辨识方法,对船舶模型进行横摇实验,通过正弦激励实验模拟实际工况,得到船舶横摇摆角及角速度,并根据等效线性化理论,对结果进行分析,识别出船舶横摇运动的线性及非线性参数,最后利用蒙特卡洛数值模拟验证识别参数的准确性。本发明通过对船舶横摇运动进行理论建模,并与实验分析、数值模拟结合起来,运用模态参数辨识和等效线性化的方法识别出船舶的横摇参数。它可用于指导船舶设计、实现船舶减摇,成果具有较高的理论研究价值和实践意义。
Ship rolling motion parameter identification method based on vibration test
一种基于振动测试的船舶横摇运动参数辨识方法
2020-09-08
Patent
Elektronische Ressource
Chinesisch
IPC: | G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung / B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS / G01D MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE , Anzeigen oder Aufzeichnen in Verbindung mit Messen allgemein / G06T Bilddatenverarbeitung oder Bilddatenerzeugung allgemein , IMAGE DATA PROCESSING OR GENERATION, IN GENERAL |
Europäisches Patentamt | 2020
|ROLLING MOTION DAMPING SYSTEM OF SMALL SHIP AND SMALL SHIP HAVING THE ROLLING MOTION DAMPING SYSTEM
Europäisches Patentamt | 2020