摘要
仿真模型验证是从仿真预期应用的角度来确定仿真模型表达实际系统的准确程度,是建模与仿真VV&A中最重要的内容之一。将小波变换理论应用于仿真模型验证,在时-频分析法方面进行了探索。应用小波变换多分辨率分析的基本理论和性质,从以小波变换系数表征信号特征的思想出发,在小波变换多尺度分解的基础上,将仿真模型输出序列与真实输出序列分解为低频部分和高频部分,针对各自特性,建立了基于小波变换系数的相容性检验算法。通过实例分析,证明了本文所提方法的有效性。
Simulation Model Validation is one of the key content in modeling and simulation W＆A. The methods of simulation model validation include time domain, frequency domain and time - frequency analyses. Though the methods of time domain and frequency domain are used widely, the analytic means is considered single. However the methods of time - frequency analyses have particular advantage. The application of wavelet transform has been involved in many fields in recent years, for example, signal processing, pattern recognition and fault diagnosis etc. The paper attempted to apply wavelet transform to simulation model validation. The basic theory and property of multi -resolution analysis on wavelet transform are applied, based on the idea that the signal characteristic is described by using the wavelet transform coefficients. On the basis of multi - scale decomposition of wavelet transform, the output sequences of the simulation model and real system are divided into low frequency and high frequency parts, and the consistence test method based on the discrete wavelet transform coefficients is built according to their respective characteristics. The application example is given and the validity of the method proved.
出处
《空军工程大学学报（自然科学版）》
CSCD
北大核心
2008年第6期52-56,共5页
Journal of Air Force Engineering University(Natural Science Edition)
基金
陕西省自然科学基金资助项目(2007F40)
关键词
仿真模型验证
离散小波变换
多分辨率分析
相容性检验
simulation model validation
discrete wavelet transform
multi - resolution analysis
consistence test
