摘要
准确对叶片振动参数进行辨识,对于叶轮机械避免共振至关重要。介绍了国内外叶片振动参数辨识技术发展情况和最小二乘原理,阐述了叶片振动参数测量系统的工作原理。通过在叶片机匣上安装不少于4支叶顶传感器,基于最小二乘原理,分析处理了叶片振动测量系统的严重欠采样数据,成功对叶片同步振动参数进行了辨识。
It is vital to identify the rotating blade vibration parameters for avoiding resonance. The development of the blade vibration parameter identification technique in the domestic and foreign and the principle of least squares are introduced. The working principle of the blade vi- bration parameters measurement system is described. Based on the principle of least square, the vibration data is processed by not less than four sensors installed at blade casing. Then the synchronous blade vibration parameters are successfully identified.
作者
杨庆凤
王翠红
辛玉红
YANG Qing-feng WANG Cui-hong XIN Yu-hong(Jingling Institute of Technology, Nanjing 211169, China)
出处
《金陵科技学院学报》
2016年第4期42-45,共4页
Journal of Jinling Institute of Technology
基金
江苏省精密与微细制造技术重点实验室开放基金项目
关键词
最小二乘原理
旋转叶片
同步振动
欠采样
参数
辨识技术
the least square method
rotating blades
synchronous vibration
under sampling signal
pa-rameters
identification technology