沈阳航空航天大学学报
瀋暘航空航天大學學報
침양항공항천대학학보
JOURNAL OF SHENYANG INSTITUTE OF AERONAUTICAL ENGINEERING
2014年
2期
32-36
,共5页
模型修正%影响系数矩阵%敏感性
模型脩正%影響繫數矩陣%敏感性
모형수정%영향계수구진%민감성
modification of model%influence coefficient matrix%sensitivity
引入影响系数矩阵的方法,修正发动机稳态模型,使修正后的模型能更好地与实际发动机相符合。仿真结果表明,模型修正后精度有很大提高,并且利用影响系数矩阵方法迭代修正的模型精度优于一次修正的结果。进一步指出模型修正精度与所选的待修正部件参数与目标性能参数的敏感性密切相关。
引入影響繫數矩陣的方法,脩正髮動機穩態模型,使脩正後的模型能更好地與實際髮動機相符閤。倣真結果錶明,模型脩正後精度有很大提高,併且利用影響繫數矩陣方法迭代脩正的模型精度優于一次脩正的結果。進一步指齣模型脩正精度與所選的待脩正部件參數與目標性能參數的敏感性密切相關。
인입영향계수구진적방법,수정발동궤은태모형,사수정후적모형능경호지여실제발동궤상부합。방진결과표명,모형수정후정도유흔대제고,병차이용영향계수구진방법질대수정적모형정도우우일차수정적결과。진일보지출모형수정정도여소선적대수정부건삼수여목표성능삼수적민감성밀절상관。
Aiming at solving this problem,influence coefficient matrix was introduced and stable status mod-el was modified,so that the model modified can correspond to factual engine. Simulated result indicates that the precision of modified model is enhanced greatly,and the precision of the model iteratively modified by influence coefficient matrix is superior to that after one single modification. And it is shown that precision of modified model correlates to the sensitivity of selected component parameter to the objective performance pa-rameter.