基于测量的激振器模型,虚拟模拟振动正弦试验

Sébastien Hoffait , Frédéric Marin , Daniel Simon , Bart Peeters , Jean-Claude Golinval
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引用次数: 14

摘要

在对大质量试件进行高水平振动试验时,由于试件与激振器之间的耦合作用,试验工程师往往难以正常通过规定的振动水平。本文提出了一种定义虚拟激振器试验模拟器的方法。第一步是通过测量(模态分析和正弦扫描)对80kn激振器进行动态识别。第二步是对模拟器中所表示的物理进行定义,并对自制模拟器中的机电方程进行转换。由西门子LMS开发并提供给V2i用于AOC项目框架的控制器被引入闭环。描述了两个测试用例来演示模拟器提供的可能性。
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Measured-based shaker model to virtually simulate vibration sine test

During high level vibration test on a high mass specimen, the test engineer is often facing difficulty to pass properly the specified vibration level due to coupling between the specimen and the shaker. The present paper present a methodology to define a virtual shaker testing simulator. The first step involves the dynamic identification of a 80 kN shaker performed thanks to measurements (modal analysis and sine sweep). The second step is the definition of the physic represented in the simulator and the translation of the electromechanical equations in a home-made simulator. Controller developed by SIEMENS LMS and supplied to V2i for a use in the framework of the AOC project is introduced to close the loop. Two test cases are described to demonstrate the possibilities offered by the simulator.

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