CAJ | 학술논문

　　针对飞机起落架损伤识别问题，提出了一种识别起落架损伤的改进粒子滤波方法。首先，建立了飞机起落架动力学模型，分析起落架损伤的危险点，得到其应力响应信号；然后，采用核平滑技术和快速高斯采样法，实现非线性系统中状态与参数估计，解决了粒子滤波重采样过程中的参数粒子枯竭现象，增加了该方法运行的实时性。实验信号分析结果表明，改进粒子滤波方法能准确识别飞机起落架危险点损伤，识别精度优于传统粒子滤波方法。
　　침대비궤기락가손상식별문제，제출료일충식별기락가손상적개진입자려파방법。수선，건립료비궤기락가동역학모형，분석기락가손상적위험점，득도기응력향응신호；연후，채용핵평활기술화쾌속고사채양법，실현비선성계통중상태여삼수고계，해결료입자려파중채양과정중적삼수입자고갈현상，증가료해방법운행적실시성。실험신호분석결과표명，개진입자려파방법능준학식별비궤기락가위험점손상，식별정도우우전통입자려파방법。
An improved particle filter method is proposed for improving damage identification of the aircraft landing gear.First, we establish landing gear model and analyze its dangerous point to obtain the stress signal .Then, ker-nel smoothing technology and fast Gaussian sampling method are used to estimate the states and parameters of non -linear system.This method can accurately identify the landing gear damage .The experimental results and their a-nalysis confirm preliminarily that the proposed method outperforms the traditional method .