摘要
以某复杂结构为研究对象,在利用质量线理论识别刚体惯性参数的基础上,进行了刚体惯性参数识别误差分析,指出了响应点和激励点的选择是刚体惯性参数识别精度的关键。从矩阵分析角度出发,提出了提高刚体惯性参数识别精度的途径,并通过工程实例得以验证,为正确地进行刚体惯性参数识别奠定了墓础。
Taking the complex structure as investigation object, error analysis of rigid-body intertia parameter identification was carried out, based on the massline theory. It is pointed out that the choices of response and excitation points are the key factors influencing identification's precision. By means of matrix analysis, some method for improving identification's precision were proposed. The results were validated by engineering examples and are essential for building up the groundwork of accurate rigid-body inertia parameters identification.
出处
《振动与冲击》
EI
CSCD
北大核心
2008年第5期105-108,143,共5页
Journal of Vibration and Shock
基金
重庆市科技攻关项目(编号:CSTC
2005AC6035)
关键词
频响函数
刚体惯性
参数识别
质量线
frequency response functions
rigid-body inertia
parameters identification
massline
