刘军,高建立,谢文磊,徐毅,孟浩东,缪岳川.试验模态分析系统设计与应[J].农业机械学报,2009,40(2):209-213.
.and Application of the Experimental Model Analysis System[J].Transactions of the Chinese Society for Agricultural Machinery,2009,40(2):209-213.
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试验模态分析系统设计与应   [下载全文]
and Application of the Experimental Model Analysis System   [Download Pdf][in English]
  
DOI:10.3969/j.issn.1000-1298.[year].[issue].[sequence]
中文关键词:  试验模态分析  测试系统  设计  动力总成
基金项目:
刘军  高建立  谢文磊  徐毅  孟浩东  缪岳川
江苏大学
中文摘要:设计了信号采集分析系统(VTCL_DSP)、试验模态分析系统(VTCL_MDT)为软件和NI—USB9215A信号采集器、三向加速度传感器为核心硬件的试验模态分析系统。系统引入了测量点响应矢量概念,采用定时长采集和变时基提取技术获取触发过程的激励力和响应信号。探讨了单点激励多点三向量响应模态试验分析方法获得结构完整模态振型的优点。给出了某动力总成和某白车身模态分析的应用实例。结果表明,系统具有较高的精度及稳定性。
Key Words:
Abstract:The experimental modal analysis system was introduced based on independent development software and NI hardware. The independent development software included the digital signal sampling and analyzing system(VTCL_DSP), experimental modal analysis system (VTCL_MDT) and the NI hardware included the NI—USB9215A signal collector and a three-dimensional acceleration sensor were used in the research. The concept of measurement point response vector was given. Timing acquisition mode and variable time based on technology were adopted by the system to get the response signals and impact forces in the trigger process. A testing method of single-input and multiple-outputs has been applied in the experimental model research to get the complete mode shapes. The advantages of the method were discussed. Two application examples were also introduced: a modal analysis for power-train and a modal analysis for body-in-white. The results showed that the system has the characters of high accuracy and high stability. 

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

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