Development of an on-line parameter estimation system using the discrete modal filter
Development of an on-line parameter estimation system using the discrete modal filter
复制标题
使用离散模态滤波器开发在线参数估计系统
DOI：
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发表时间：
1992
期刊：
影响因子：
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通讯作者：
R. Allemang
中科院分区：
文献类型：
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作者：
S. Shelley;L. Freudinger;R. Allemang
讨论了时变结构系统频率和阻尼自动监测系统的发展。称为离散模态滤波器的空间滤波技术用于将多个响应测量解耦为模态坐标响应。由于模态坐标响应是单自由度系统的响应，因此可以用较短的数据记录准确地估计频率和阻尼。讨论了一种在线监测系统，该系统可用于各种应用。本文的重点是在飞机飞行颤振试验中的应用。
Ongoing development of an automated system for monitoring the frequency and damping of time varying structural systems is discussed. A spatial filtering technique called the discrete modal filter is used to uncouple multiple response measurements into modal coordinate responses. Since the modal coordinate responses are the responses of single-degree-of-freedom systems, the frequency and damping may be accurately estimated with short data records. An on-line monitoring system is discussed which may be useful in a variety of applications. The focus in this paper is on the application to aircraft flight flutter testing.