Research Initiation: The Application of Multivariate Error Analysis to the Estimation of Pole-Zero Models

研究启动：多元误差分析在零极点模型估计中的应用

• 批准号: 8809134
• 负责人: A. Wicks
• 金额: $ 5.97万
• 依托单位: Virginia Polytechnic Institute and State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-07-01 至 1990-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8809134&HistoricalAwards=false
• 关键词: Research; Initiation; Application; Multivariate; Error

This project addresses improving the procedures for modeling structures. Such modeling is critical in the design of mechanical systems. Failure to use high fidelity models in the design process will only compromise the reliability of the final product. Techniques currently exist for determining the frequency response function for single input/output systems. The technique for more realistic multiple input/output systems is not yet developed. This activity addresses that need. This is a four phase research study which develops for multiple input/output systems a theory capable of generating accurate pole-zero models for the dynamic response of structures. In addition to estimating the system parameters, the method can quantify the error of each estimated parameter. The theoretical methods developed will be tested for a structure representative of the common problems associated with modal testing. Results of this work will have application beyond structural modeling. They will also be applicable to the technology of control of structural components and systems.

这个项目致力于改进结构建模的程序。这种建模在机械系统的设计中是至关重要的。在设计过程中未能使用高保真模型只会损害最终产品的可靠性。目前存在确定单输入/输出系统的频响函数的技术。更实际的多输入/输出系统的技术尚未开发。这个活动解决了这个需求。这是一个四阶段的研究，为多输入/输出系统开发了一种理论，能够为结构的动力响应产生精确的极点-零模型。该方法除了对系统参数进行估计外，还可以对各估计参数的误差进行量化。所开发的理论方法将在一个具有代表性的与模态测试相关的常见问题的结构上进行测试。这项工作的结果将有应用超出结构建模。它们也将适用于结构部件和系统的控制技术。