Journal of Systems Engineering and Electronics ›› 2013, Vol. 35 ›› Issue (3): 643-649.doi: 10.3969/j.issn.1001-506X.2013.03.34

• 软件、算法与仿真 • 上一篇    下一篇

一种时频结合分析的仿真结果动态一致性检验方法

胡玉伟, 马萍, 杨明, 王子才   

  1. 哈尔滨工业大学控制与仿真中心, 黑龙江 哈尔滨 150001
  • 出版日期:2013-03-20 发布日期:2010-01-03

Dynamic consistency test method combining time domain with frequency domain for simulation results

HU Yu-wei, MA Ping, YANG Ming, WANG Zi-cai   

  1. Control and Simulation Center, Harbin Institute of Technology, Harbin 150001, China
  • Online:2013-03-20 Published:2010-01-03

摘要:

针对武器系统的大量动态输出过程具有非平稳和短时序的特点,提出了一种时频结合分析的仿真结果动态一致性检验方法,根据分析过程中的步骤、方法和规则,建立了动态一致性检验框架。该方法首先通过分析传统灰色关联分析方法的不足,从序列间的距离和形状两方面考虑,提出了一种改进的灰色关联度模型,在时域内对仿真数据的动态一致性进行了检验。然后运用最大熵谱估计方法并结合小波多尺度分析理论对信号分解重构无需先验知识的特点,对非平稳数据进行了平稳化处理完成了频域内仿真数据的一致性检验。最后根据对两种不同角度得到的一致性检验结果的冲突分析,运用合成规则获得仿真数据动态一致性检验的综合结果。通过对电磁轨道炮发射过程放电电流的一致性检验,验证了该方法的有效性和可行性。

Abstract:

Aiming at the non-stationary and short time series characteristics of the dynamic output procedure for many weapon systems, a consistency test method combining time domain with frequency domain for simulation results is proposed. According to the procedures, approaches and rules of the research process, a consistency test framework is established. Considering the deficiency of the traditional grey relational analysis method, the grey relational analysis model is improved by taking into account the distances and form of inter-series, which is used to test the dynamic consistency in time domain. Then, considering the stationary character required for the data processing using the maximum entropy spectral estimation method and combining with the character that prior knowledge is not required in wavelet multi-scale analysis when dealing with signal decomposition and reconstruction, non-stationary data are converted to stationary results by which the dynamic consistency test is performed in frequency domain. Finally, the two analysis results are combined on the basis of conflict analysis by applying combination rules, and the synthetic consistency test result is obtained. The effectiveness and feasibility of the method are verified through the consistency test for the discharge current in a railgun emitting process.