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On the Monitoring of the Vibratory Environment of DCMIX4 Campaign. Preliminary Results
Microgravity Science and Technology ( IF 1.8 ) Pub Date : 2020-06-15 , DOI: 10.1007/s12217-020-09797-w
D. Dubert , M. Marín-Genescà , M. J. Simón , J.M. Ezquerro , J. Massons , Jna. Gavaldà , X. Ruiz , V. Shevtsova

This work presents the preliminary characterization of the vibrational environment of the DCMIX4 thermodiffusion experiment conducted onboard the ISS from December 2018 to March 2019. Given the long duration of each one of the 58 runs of the campaign and to ensure a correct interpretation of the results, an accurate analysis of acceleration levels all along the experiment is advisable. Digital signals coming from the nearest sensor, es09006, located in the Microgravity Science Glovebox (Destiny module) were downloaded from the PIMS NASA website. The techniques used to identify the main disturbances during the experiments were defined both in time and frequency domains. It is expected that the results obtained can help the experimentalist to have an overview of the possible sources of disturbances that may affect their experiments. To visualize the possible impact of the accelerometric environment on the experiment a numerical simulation has been performed. Four signals have been chosen, one considering the ideal case g = 0, one coming from the OSS raw sensor (outside the Microgravity Science Glovebox) and the other two, coming from the es09006 sensor that needed to be mathematical manipulated for considering only the low frequency range. Independent of the location of the sensor, numerical simulations do not detect, in any case, appreciable flow disturbances if quiescent periods are considered. Therefore, in case the reference sensor is not available one can use other sensors placed in the same module.

中文翻译:

关于DCMIX4广告系列振动环境的监控。初步结果

这项工作介绍了从2018年12月至2019年3月在国际空间站上进行的DCMIX4热扩散实验的振动环境的初步表征。鉴于此次活动的58轮每次都耗时长,并确保正确解释结果,建议在整个实验过程中对加速度水平进行准确的分析。来自微重力科学手套箱(命运模块)中最近的传感器es09006的数字信号是从PIMS NASA网站下载的。在时域和频域中都定义了用于识别实验过程中主要干扰的技术。期望获得的结果可以帮助实验者全面了解可能影响他们实验的干扰源。为了可视化加速度计环境对实验的可能影响,已进行了数值模拟。选择了四个信号,一个考虑了理想情况g = 0,一个来自OSS原始传感器(在Microgravity Science手套箱之外),另外两个来自es09006传感器,这些信号需要进行数学处理才能仅考虑低信号。频率范围。如果考虑了静止期,无论如何,数值模拟都不会独立于传感器的位置而检测到明显的流量扰动。因此,在参考传感器不可用的情况下,可以使用放置在同一模块中的其他传感器。一个考虑了理想情况g = 0,一个来自OSS原始传感器(在Microgravity Science手套箱之外),另外两个来自es09006传感器,需要对数学进行操作以仅考虑低频范围。如果考虑了静止期,无论如何,数值模拟都不会独立于传感器的位置而检测到明显的流量扰动。因此,在参考传感器不可用的情况下,可以使用放置在同一模块中的其他传感器。一个考虑了理想情况g = 0,一个来自OSS原始传感器(在Microgravity Science手套箱之外),另外两个来自es09006传感器,需要对数学进行操作以仅考虑低频范围。如果考虑了静止期,无论如何,数值模拟都不会独立于传感器的位置而检测到明显的流量扰动。因此,在参考传感器不可用的情况下,可以使用放置在同一模块中的其他传感器。如果考虑静止期,则会产生明显的流量扰动。因此,在参考传感器不可用的情况下,可以使用放置在同一模块中的其他传感器。如果考虑静止期,则会产生明显的流量扰动。因此,在参考传感器不可用的情况下,可以使用放置在同一模块中的其他传感器。
更新日期:2020-06-15
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