导弹与航天运载技术
導彈與航天運載技術
도탄여항천운재기술
MISSILES AND SPACE VEHICLES
2014年
2期
1-4
,共4页
有控飞行器%有约束最小二乘%气动参数辨识
有控飛行器%有約束最小二乘%氣動參數辨識
유공비행기%유약속최소이승%기동삼수변식
Controlled flight vehicle%Constrained least squares method%Aerodynamic parameters identification
有控飞行器，特别是稳态控制状态下，姿态运动信息很小。利用遥测参数辨识气动参数，采用最大似然等统计方法估值，这些姿态信息很容易被噪声淹没。利用气动特性的先验知识和有约束最小二乘估值的方法，能够较好地进行气动参数辨识。该方法也可以用于飞行中在线辨识，及遥测数据质量不好或缺少气象测量数据的试后辨识，并且可以推广到非稳态控制的气动参数辨识。
有控飛行器，特彆是穩態控製狀態下，姿態運動信息很小。利用遙測參數辨識氣動參數，採用最大似然等統計方法估值，這些姿態信息很容易被譟聲淹沒。利用氣動特性的先驗知識和有約束最小二乘估值的方法，能夠較好地進行氣動參數辨識。該方法也可以用于飛行中在線辨識，及遙測數據質量不好或缺少氣象測量數據的試後辨識，併且可以推廣到非穩態控製的氣動參數辨識。
유공비행기，특별시은태공제상태하，자태운동신식흔소。이용요측삼수변식기동삼수，채용최대사연등통계방법고치，저사자태신식흔용역피조성엄몰。이용기동특성적선험지식화유약속최소이승고치적방법，능구교호지진행기동삼수변식。해방법야가이용우비행중재선변식，급요측수거질량불호혹결소기상측량수거적시후변식，병차가이추엄도비은태공제적기동삼수변식。
Attitude motion information of controlled flight vehicle is very limited especially under stable control. This attitude information is easy to be submerged in noise when using statistical estimation such as Maximum Likelihood Method based on utilizing telemetry data to identify aerodynamic parameters. This paper presents an effective aerodynamic parameters identification method based on constrained least squares estimation and a priori knowledge of aerodynamic characteristics. This method can also be used for flight on-line identification and after mission identification in case of lacking meteorological data or without high quality telemetry data. It can also be extended to aerodynamic parameters identification for unstable control.
