LMS 振动噪声测试与分析系统理论基础
理 论 基 础《Thory and Background 》LMS 2000 刘馥清编译（本文档仅用作学习交流，如若侵权请自动删除）
目录单 2--12
第一篇信号处理 13
第一章谱分析.................................................................................................................13
1.1 数字信号处理..........................................................................................................13
1.2 频率混淆与抗混滤波...............................................................................................18
1.3 泄漏与加窗...............................................................................................................19
1..3.1 窗处理..........................................................................................................20
1.4 平均..........................................................................................................................25
1.5 参考文献..................................................................................................................27
第二章结构动力学试验.....................................................................................28
2.1 信号分析..................................................................................................................29
2.2 系统分析..................................................................................................................30
2.3 特征分析................................................................................................................301
第三章基本测量功能........................................................................................................33
3.1 时域测量..................................................................................................................33
3.2 频域测量..................................................................................................................36
3.3 复合函数..................................................................................................................44
3.4 单位..........................................................................................................................46
3.5 有效值计算..............................................................................................................47
第二篇声学和声品质.......................................................................................................................50
第四章声学的基本术语和定义........................................................................................50
4.1 声学参数...................................................................................................................50
4.2 用对数标尺度量声学参数......................................................................................53
4.3 倍频程带..................................................................................................................55
4.4 声计权......................................................................................................................56
第五章声学测量................................................................................................................58
5.1 声学测量..................................................................................................................59
5.2 声学量的计算..........................................................................................................61
5.3 声学测量表面..........................................................................................................63
声学测量的ISO标准.................................................................................64
5.4 频带..........................................................................................................................64
5.5 声场指数..................................................................................................................65
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第十九章刚体模态..........................................................................................................237
19.1 计算刚体属性......................................................................................................237
由测量的FRF推算出刚体属性..........................238_Toc105569519
计算刚体属性...........................................................................................239
19.2 刚体模态分析......................................................................................................243
刚体模态分析的应用...............................................................................243
19.2.1 从测量模态中分离出刚体模态...............................................................244
19.2.2 刚体模态基于几何数据的综合...............................................................245
19.3 参考文献..............................................................................................................246
第二十章设计..................................................................................................................246
20.1 利用模态模型实施模态设计..............................................................................246
20.2 灵敏度分析..........................................................................................................249
20.2.1 灵敏度分析的数学背景...........................................................................249
20.3 修改预测..............................................................................................................252
20.3.1 数学背景...................................................................................................253
20.3.2 修改预测的实施.......................................................................................260
20.3.3 模型修改的定义.......................................................................................261
20.3.4 修改预测...................................................................................................267
粱元件应用举例...........................................................................................268
20.4 强迫响应..............................................................................................................272
20.4.1 强迫响应的数学背景.....................................................................272
第二十一章结构的几何骨架...............................................................................274
21.1 试验结构的几何骨架..........................................................................................274
21.2 结点......................................................................................................................275
位置...............................................................................................................275
方位...............................................................................................................276
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