机械强度
機械彊度
궤계강도
JOURNAL OF MECHANICAL STRENGTH
2010年
1期
86-89
,共4页
仿真结果%可信性%动态一致性%距离检验方法%频谱分析
倣真結果%可信性%動態一緻性%距離檢驗方法%頻譜分析
방진결과%가신성%동태일치성%거리검험방법%빈보분석
Simulation result%Credibility%Dynamic consistency%Distance test method%Spectrum analysis
针对仿真结果动态一致性检验,将距离检验方法与频谱分析方法进行对比分析.研究表明,目前常用的频谱分析方法需要将数据从时域转化到频域后再对仿真结果动态一致性进行检验,而数据从时域转化到频域后,已不能反映样本序列中各时刻值的先后顺序,也就无法检验实测样本序列和仿真样本序列之间各时刻值先后顺序关系的一致性,因此,频谱分析方法只适用于可以忽略序列中各时刻值先后顺序的平稳序列.但是,工程实际中样本序列各时刻值的先后顺序也是需要检验的重要参数,譬如先爬升再下降与先下降再爬升这两种导弹弹道是截然不同的,频谱分析方法不能对此进行有效的检验.距离检验方法则能直接在时域内对仿真结果动态一致性进行定量检验,它对平稳序列和非平稳序列均适用,可有效地解决仿真结果动态一致性定量检验的问题.
針對倣真結果動態一緻性檢驗,將距離檢驗方法與頻譜分析方法進行對比分析.研究錶明,目前常用的頻譜分析方法需要將數據從時域轉化到頻域後再對倣真結果動態一緻性進行檢驗,而數據從時域轉化到頻域後,已不能反映樣本序列中各時刻值的先後順序,也就無法檢驗實測樣本序列和倣真樣本序列之間各時刻值先後順序關繫的一緻性,因此,頻譜分析方法隻適用于可以忽略序列中各時刻值先後順序的平穩序列.但是,工程實際中樣本序列各時刻值的先後順序也是需要檢驗的重要參數,譬如先爬升再下降與先下降再爬升這兩種導彈彈道是截然不同的,頻譜分析方法不能對此進行有效的檢驗.距離檢驗方法則能直接在時域內對倣真結果動態一緻性進行定量檢驗,它對平穩序列和非平穩序列均適用,可有效地解決倣真結果動態一緻性定量檢驗的問題.
침대방진결과동태일치성검험,장거리검험방법여빈보분석방법진행대비분석.연구표명,목전상용적빈보분석방법수요장수거종시역전화도빈역후재대방진결과동태일치성진행검험,이수거종시역전화도빈역후,이불능반영양본서렬중각시각치적선후순서,야취무법검험실측양본서렬화방진양본서렬지간각시각치선후순서관계적일치성,인차,빈보분석방법지괄용우가이홀략서렬중각시각치선후순서적평은서렬.단시,공정실제중양본서렬각시각치적선후순서야시수요검험적중요삼수,비여선파승재하강여선하강재파승저량충도탄탄도시절연불동적,빈보분석방법불능대차진행유효적검험.거리검험방법칙능직접재시역내대방진결과동태일치성진행정량검험,타대평은서렬화비평은서렬균괄용,가유효지해결방진결과동태일치성정량검험적문제.
According to dynamic consistency test of simulation results, comparative analysis of distance test method and spectrum analysis method is given. The results show that data in the time domain must be transformed into frequency domain, and then dynamic consistency of simulation result can be tested by spectrum analysis method. While order of sample series data can not be reflected through the transformation, namely, order of sample series data between measured sample series and simulation sample series can not be tested, therefore, the spectrum analysis method is suitable only for stationary time series of negligible order. However, order of sample series data is an important parameter to be tested in actual engineering. For example, two trajectories of first climbing then decreasing and first decreasing then climbing are entirely different, so the spectrum analysis method cannot test them effectively. The distance test method can realize quantitative test of dynamic consistency for simulation results in time domain, and it is suitable for the stationary and the non-stationary time series, which can solve the problem of dynamic consistency quantitative test.
