空天防御2025，Vol.8Issue(2)：44-49,6.
高速飞行器姿态控制系统的协方差分析方法
Covariance Analysis for Hypersonic Vehicle Attitude Control System
摘要
Abstract
This paper proposed a covariance analysis describing function technique(CADET)using unscented transform for hypersonic vehicle attitude control system rapid assessment statistical performance problem.The traditional CADET method suffers from complex solving processes and complicated programming when solving the description function of nonlinear functions.In this study,the nonlinear function was linearised by weighted sampling and the least square method during the statistical linearization.The proposed method analysed the propagation law of the state mean and covariance of the stochastic nonlinear system.Based on the mathematical model of the hypersonic vehicle longitudinal attitude motion,the statistical performance of the hypersonic vehicle attitude motion with external disturbance was calculated by the CADET method using the Unscented Transform.The validity and correctness of the proposed CADET method were verified and compared with the Monte Carlo simulation results.关键词
协方差分析描述函数/无迹变换/最小二乘法/高速飞行器Key words
covariance analysis describing function technique/unscented transform/least square/hypersonic vehicle分类
航空航天引用本文复制引用
蒋瑞民,周鑫杰,赵斌,毕千,朱亚龙..高速飞行器姿态控制系统的协方差分析方法[J].空天防御,2025,8(2):44-49,6.基金项目
国家自然科学基金(62103331,62373307) （62103331,62373307）
中国航天科技集团有限公司上海航天科技创新基金资助项目(SAST2020-003) （SAST2020-003）
