文献类型：期刊文献

中文题名：用Matlab研究半功率带宽法

英文题名：Research on the half-power bandwidth method based on Matlab

作者：李彤[1];宋冬冬[1]

机构：[1]华东理工大学机械与动力学院,承压系统安全科学教育部重点实验室

年份：2009

卷号：26

期号：1

起止页码：92

中文期刊名：实验技术与管理

外文期刊名：Experimental Technology and Management

收录：CSTPCD;;北大核心:【北大核心2008】；

基金：上海市重点学科建设项目资助(B503)

语种：中文

中文关键词：阻尼比;半功率带宽法;Matlab

外文关键词：damping ratio; half-power bandwidth method; Matlab

摘要：随着科学技术和生产力的不断发展，测试任务日趋复杂与完善，在工程振动中阻尼比的测试分析越来越深入，对阻尼比稳定性和精度要求也越来越高。大多数分析测试是基于半功率带宽法。文章通过用Matlab对半功率带宽法的结果进行分析，对半功率带宽法的特点、适用范围及影响因素进行探讨，得出了合理的结论及求精确值的方法。
Along with the unceasing technology and productivity development, testing task is more complex and perfect; the damping ratio test analysis is deeper and deeper in the engineering project. The requirement for the stability and the precision is higher than before; the majority of analysis calculation are based on the half power bandwidth method. With the help of Matlab, the results of the half-power bandwidth method are analyzed, and its characteristic and the applicable scope and the influence factor are studied. A reasonable conclusion is made. An accurate solution is put forward.