摘要
基于频域法动载荷识别原理,识别基于记忆合金驱动的星箭连接分离装置的三次冲击载荷。通过EEMD算法对测点冲击响应信号去噪及识别,可知频域法可以比较准确识别出星箭连接分离装置的三次冲击载荷,识别效果更具优势,实验结果也间接验证了方法的可行性与正确性。
Based on the dynamic load identification principle in the frequency domain method,impact loads of a connection-separation device between satellite and rocket driven using shape memory alloy(SMA)were identified for three times.The EEMD algorithm was used to de-noise and identify impact response signals of measured points,and then three times of impact loads generated in separation process were identified.The test results showed that the frequency domain method based on EEMD can be used to more accurately identify three times of impact loads of the connection-separation device between satellite and rocket with a better recognition effect,the feasibility and correctness of the proposed method is also verified with test results.
作者
张玉良
杨飞
岳洪浩
邓宗全
徐洋
ZHANG Yuliang;YANG Fei;YUE Honghao;DENG Zongquan;XU Yang(School of Mechatronic Engineering,Harbin Institute of Technology,Harbin 150001,China;College of Mechanical Engineering,Donghua University,Shanghai 201620,China)
出处
《振动与冲击》
EI
CSCD
北大核心
2018年第17期79-85,共7页
Journal of Vibration and Shock
基金
空间先进分离及动力学与控制技术(国家863计划项目)
关键词
星箭连接分离装置
频域法
冲击载荷识别
EEMD去噪
connection-separation device
impact load
parametric identification
frequency domain method
ensemble empirical mode decomposition(EEMD)
作者简介
张玉良,男,硕士,1980年生;通信作者:杨飞,男,博士,讲师,1985年生。
