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在小型飞轮上演示的光电应变测量系统。

Optoelectronic Strain-Measurement System Demonstrated on Scaled-Down Flywheels.

作者信息

Rath Matthias Franz, Birgel Christof, Buchroithner Armin, Schweighofer Bernhard, Wegleiter Hannes

机构信息

CD-Laboratory for Measurement Systems for Harsh Operating Conditions, Graz University of Technology, 8010 Graz, Austria.

Institute of Electrical Measurement and Sensor Systems, Graz University of Technology, 8010 Graz, Austria.

出版信息

Sensors (Basel). 2024 Jul 1;24(13):4292. doi: 10.3390/s24134292.

DOI:10.3390/s24134292
PMID:39001070
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11244128/
Abstract

Monitoring the strain in the rotating flywheel in a kinetic energy storage system is important for safe operation and for the investigation of long-term effects in composite materials like carbon-fiber-reinforced plastics. An optoelectronic strain-measurement system for contactless deformation and position monitoring of a flywheel was investigated. The system consists of multiple optical sensors measuring the local relative in-plane displacement of the flywheel rotor. A special reflective pattern, which is necessary to interact with the sensors, was applied to the surface of the rotor. Combining the measurements from multiple sensors makes it possible to distinguish between the deformation and in-plane displacement of the flywheel. The sensor system was evaluated using a low-speed steel rotor for single-sensor performance investigation as well as a scaled-down high-speed rotor made from PVC plastic. The PVC rotor exhibits more deformation due to centrifugal stresses than a steel or aluminum rotor of the same dimensions, which allows experimental measurements at a smaller flywheel scale as well as a lower rotation speed. Deformation measurements were compared to expected deformation from calculations. The influence of sensor distance was investigated. Deformation and position measurements as well as derived imbalance measurements were demonstrated.

摘要

监测动能存储系统中旋转飞轮的应变对于安全运行以及研究碳纤维增强塑料等复合材料的长期影响非常重要。研究了一种用于飞轮非接触变形和位置监测的光电应变测量系统。该系统由多个光学传感器组成，用于测量飞轮转子的局部相对面内位移。在转子表面应用了一种与传感器相互作用所需的特殊反射图案。结合多个传感器的测量结果，可以区分飞轮的变形和面内位移。使用低速钢转子评估传感器系统的单传感器性能，以及使用由PVC塑料制成的缩小比例高速转子进行评估。与相同尺寸的钢或铝转子相比，PVC转子由于离心应力而表现出更多变形，这使得能够在较小的飞轮尺寸以及较低的转速下进行实验测量。将变形测量结果与计算得出的预期变形进行比较。研究了传感器距离的影响。展示了变形和位置测量以及由此得出的不平衡测量结果。

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本文引用的文献

1
Uncertainty Analysis of an Optoelectronic Strain Measurement System for Flywheel Rotors.飞轮转子光电应变测量系统的不确定性分析
Sensors (Basel). 2021 Dec 16;21(24):8393. doi: 10.3390/s21248393.