Optical testing system used for ship model water surface experiment and testing method thereof

Abstract

The invention discloses an optical testing system used for a ship model water surface experiment and a testing method thereof. The system comprises a water pool, a water pool guide rail, a reference plane module, a ship model, a laser range finding module, a data collection and processing module, and a power supply module. The system and the method can be used for measuring transverse metacentric radiuses and longitudinal metacentric radiuses of the ship model and a real ship, can also be used for collecting and processing rolling and pitching hydrostatic experiment data of the ship model and the real ship, and is capable of measuring and displaying the transverse metacentric radiuses, longitudinal metacentric radiuses, transverse angular displacements, longitudinal angular displacements, rolling movement hydrodynamic coefficients and pitching movements hydrodynamic coefficients of the ship model and the real ship in real time. The system is convenient to install, high in measurement precision and free from the influences of environment magnetic fields, and compared with a testing system composed of an inclinometer or an attitude instrument, the influences of environment temperature are substantially reduced.

Description

technical field [0001] The invention belongs to the technical field of ship model and real ship water surface experiments, relates to a ship model water surface experiment, and more particularly relates to an optical test system and method for ship model water surface swaying attenuation motion and steady center radius experiments. Background technique [0002] In the new ship type research and development stage, ship model roll and pitch experiments are important means to study the hydrodynamic performance of the new ship type. When the actual ship is delivered and checked, the stability radius is an important index to measure the safety of the ship. Therefore, the ship still water swaying experiment runs through The entire ship development and construction process. The main content of the ship still water swaying experiment is to measure the roll angle and pitch angle of the ship. At present, the measurement of the still water swaying experiment system of surface ships re...

AI Technical Summary

Problems solved by technology

[0003] First, from the perspective of the principle of the inclination sensor, whether it is a "solid pendulum", "liquid pendulum" or "gas pendulum", there is a problem of slow response time. In high-frequency occasions, the output will be unstable due to the short response time, which is not suitable for ships. Shaking motion angle measurement;

[0004] The second is that the attitude indicator relies on the electronic gyroscope to measure the angular displacement, and the electronic gyroscope is easily affected by the magnetic field of the surrounding environment to affect the measurement accuracy, so it is not suitable for the complex magnetic field environment of the ship;

[0005] The third is that the attitude sensor and attitude instrument are easily affected by the ambient temperature, and the measurement data will have temperature drift.

Images