舰船摇荡运动数据采集及混沌特性分析

Data Collection and Chaotic Characteristic Analysis of Ship Swaying Motions

针对波浪中的舰船摇荡运动难以用微分方程进行描述的矛盾,提出了通过实船试验获取摇荡时历进而分析其机理的方法.详细介绍了舰船摇荡运动数据采集的设备、方法和步骤.对实测数据进行的定性分析和定量计算表明,所采集的实船摇荡时历是混沌时间序列,表明实际非规则波中的舰船摇荡运动具有混沌特性.

Due to the fact that ship swaying motions in irregular waves are difficult to be described by differential equation,this paper suggests that the mechanism be studied through the swaying time series obtained by actual ship trial.The device,plan and procedure of ship swaying data collection are introduced in detail.The qualitative analysis and quantitative calculation on practical data show that the actual ship swaying time series is chaotic time series and the ship swaying motions in irregular waves exhibit chaotic characteristic.