基于小波能量谱松动部件碰撞质量估计研究  

Collision mass estimation of loose parts based on the wavelet energy spectrum

作　　者：谷俊[1] 方力先[1] 曾复[1] 张卫[1] 万鹏飞[1] 

机构地区：[1]杭州电子科技大学生命信息与仪器工程学院,杭州310018

出　　处：《振动与冲击》2016年第22期237-242,共6页Journal of Vibration and Shock

基　　金：国家重大专项(2010ZX06001-001)资助;浙江省公益技术社会发展项目(2012C23017)资助

摘　　要：机械设备中零件松动的碰撞质量估计一直是个困难问题,从而影响设备的故障诊断,尤其在核电站运行中的状态监测。针对目前算法误差大,估计一致性差的问题,在实验基础上,采用小波能量谱方法对不同冲击质量进行估计,并通过线性插值建立碰撞质量尺度峰值函数。实验结果表明,该方法估计误差小、一致性好和抗干扰能力强等特点,具有较好的工程实际应用价值。The collision mass estimation of loose parts in mechanical equipments influences the diagnosis of equipment failures,especially in monitoring the condition of nuclear power station.In consideration of the imprecision of existing algorithms and poor consistency of estimations,the method of wavelet energy spectrum was proposed to estimate the mass under different impact and establish a collision mass scale peak function based on experiments.The experimental results show that the method has a better practical value in engineering applications because of its precise estimation,good consistency and strong anti-interference ability.

关 键 词：松动部件 质量估计 小波能量谱 

分 类 号：TL363[核科学技术—核技术及应用]