摘要
选择了Haar小波这一既具有对称性,又是有限紧支撑的正交小波,构造了高精度动态载荷识别模型,使得在满足实测响应个数远远小于导弹自由度数的情况下,可以识别出比较精确的动态载荷.针对8自由度弹簧质量块系统,使用传统的模态变换识别方法和使用离散正交的Haar小波作为正交矩阵的小波正交算子变换法进行了比较分析,结果证实了基于Haar小波的识别方法的优越性.使用小波方法仿真识别了某型导弹的振动载荷,与给定的仿真载荷相比,能给出有一定精度的识别结果,从而证明了辨识方法的可行性.
Haar wavelet is selected, which has symmetry and is supported finitely to construct high precise model of load identification. Structural dynamics model to identify loads is established precisely under the condition that the number of measurement point is more little than the number of degree of freedom. Load of missile is identified by using simulations data of transverse response, The rsults show that the error between the identified load and the simulation value is little. Therefore, the proposed method of load identification is feasible.
出处
《战术导弹技术》
北大核心
2007年第1期89-94,共6页
Tactical Missile Technology
关键词
潜射导弹
动载荷识别
小波
正交算子
submarine-launched missile
dynamic load identification
wavelet
orthogonal operator
