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Extremely compact and lightweight triboelectric nanogenerator for spacecraft flywheel system health monitoring
Nano Energy ( IF 16.8 ) Pub Date : 2024-01-24 , DOI: 10.1016/j.nanoen.2024.109330 Shuai Gao , Tenghao Ma , Ningning Zhou , Jigang Feng , Pu Huayan , Jun Luo , Paolo Pennacchi , Fulei Chu , Qinkai Han
Nano Energy ( IF 16.8 ) Pub Date : 2024-01-24 , DOI: 10.1016/j.nanoen.2024.109330 Shuai Gao , Tenghao Ma , Ningning Zhou , Jigang Feng , Pu Huayan , Jun Luo , Paolo Pennacchi , Fulei Chu , Qinkai Han
The abnormal state of supporting bearings significantly affects the directional accuracy of spacecraft flywheel systems. A self-sensing triboelectric nanogenerator (TENG) offers a desirable route for on-orbit health monitoring and can potentially improve the intelligence level of spacecraft. Here, an extremely compact and lightweight TENG (CL-TENG) for the nonguided clearance of bearings is proposed and fabricated for the condition monitoring of a flywheel assembly. Using the bearing radial space allows the CL-TENG to perceive the revolution and whirling behavior of the cage; therefore, the output of the CL-TENG is simultaneously affected by the bearing speed and load. A test platform for capturing the kinematic of the cage is established to validate the effectiveness of the CL-TENG based on bearing skidding, cage rotation, and whirling instability. A negative exponential correlation between the output voltage and dynamic whirling clearance index is shown to be the basis of cage whirling sensing. The internal clearance and materials of the CL-TENG are optimized to enhance the output performance while preventing wear on the flexible electrodes. The application of the CL-TENG to an actual flywheel system in a simulated space environment and nonstationary operating conditions demonstrate its advantages in detecting the abnormal operating state of the cage.
中文翻译:
用于航天器飞轮系统健康监测的极其紧凑和轻便的摩擦纳米发电机
支撑轴承的异常状态显着影响航天器飞轮系统的定向精度。自感知摩擦纳米发电机(TENG)为在轨健康监测提供了理想的途径,并有可能提高航天器的智能水平。在此,提出并制造了一种用于轴承非引导间隙的极其紧凑且轻量的 TENG (CL-TENG),用于飞轮组件的状态监测。利用轴承径向空间,CL-TENG能够感知保持架的公转和回转行为;因此,CL-TENG的输出同时受到轴承速度和负载的影响。建立了一个用于捕获保持架运动学的测试平台,以验证基于轴承打滑、保持架旋转和旋转不稳定性的 CL-TENG 的有效性。输出电压和动态涡动间隙指数之间的负指数相关性被证明是保持架涡动传感的基础。 CL-TENG 的内部间隙和材料经过优化,可增强输出性能,同时防止柔性电极磨损。将CL-TENG应用于模拟空间环境和非平稳运行条件下的实际飞轮系统,证明了其在检测笼子异常运行状态方面的优势。
更新日期:2024-01-24
中文翻译:
用于航天器飞轮系统健康监测的极其紧凑和轻便的摩擦纳米发电机
支撑轴承的异常状态显着影响航天器飞轮系统的定向精度。自感知摩擦纳米发电机(TENG)为在轨健康监测提供了理想的途径,并有可能提高航天器的智能水平。在此,提出并制造了一种用于轴承非引导间隙的极其紧凑且轻量的 TENG (CL-TENG),用于飞轮组件的状态监测。利用轴承径向空间,CL-TENG能够感知保持架的公转和回转行为;因此,CL-TENG的输出同时受到轴承速度和负载的影响。建立了一个用于捕获保持架运动学的测试平台,以验证基于轴承打滑、保持架旋转和旋转不稳定性的 CL-TENG 的有效性。输出电压和动态涡动间隙指数之间的负指数相关性被证明是保持架涡动传感的基础。 CL-TENG 的内部间隙和材料经过优化,可增强输出性能,同时防止柔性电极磨损。将CL-TENG应用于模拟空间环境和非平稳运行条件下的实际飞轮系统,证明了其在检测笼子异常运行状态方面的优势。