基于ISIGHT的水下航行体水动力参数辨识方法研究

Hydrodynamic Parameter Identification Method for Underwater Vehicle Using ISIGHT Software

针对水下航行体弹道方程水动力参数辨识的复杂性,提出采用ISIGHT软件辨识水动力参数的方法,通过对待辨识参数的灵敏度分析,得到待辨识的关键参数,建立待辨识关键参数的辨识模型,对水弹道方程的水动力参数加以修正,提高了弹道仿真模型的置信度。最后结合实测数据验证了辨识方法的有效性。

Aiming at the complexity of hydrodynamic parameters identification for underwater-launched vehicle ballistic equations,this paper puts forward a way of hydrodynamic parameters identification based on ISIGHT software.The key parameters are obtained after the analysis of sensitivity of parameters.The key parameters identification model is established.The hydrodynamic parameters of ballistic equations are corrected,and the simulation result＇s confidence is improved.At last,the availability of identification method is verification combining test data.