信号处理使用圆形传感器阵列来测量螺栓关节的扭转角度
Thorben Schüthe1, Karl-Ragmar Riemschneider1, Andreas Meyer-Eschenbach1
1Faculty of Engineering and Computer Science, Hamburg University of Applied Sciences, 20099 Hamburg, Germany.
Sensors (Basel, Switzerland)
|May 11, 2024
概括
本研究介绍了一种非接触方法,用于使用磁传感器阵列测量螺栓连接的扭转角度. 两种信号处理技术,即直接方法和基于学习的方法,可以在组装过程中准确地确定预负载力.
科学领域:
- 机械工程 机械工程
- 传感器技术 传感器技术
- 信号处理 信号处理
背景情况:
- 在螺栓接头中准确的预负荷力测定对于结构完整性和安全性至关重要.
- 测量扭转角的传统方法往往涉及接触,限制了应用范围,并可能引入错误.
- 螺栓接头的小扭转角度 (<4度) 需要高分辨率的测量技术.
研究的目的:
- 开发和评估一种新的,非接触式方法来测量螺栓接头的扭转角度.
- 将圆形磁传感器阵列集成到扭矩钥匙中,用于高分辨率的角度测量.
- 评估两个不同的信号处理方法的有效性,以计算扭矩角度.
主要方法:
- 在扭矩钥匙内实现圆形磁传感器阵列,用于非接触式扭矩角度测量.
- 离散富里埃转换 (DFT) 的应用,用于从信号相直接计算旋转角.
- 利用高斯过程回归用于涉及学习阶段的角度误差最小化方法.
主要成果:
- 直接DFT方法和基于学习的高斯过程回归都在实验验证中表现出了有希望的结果.
- 直接方法实现了卓越的角度分辨率,不需要事先的培训或校准.
- 基于学习的方法显示了在具有初始参考数据的复杂系统中显著增强解决方案的潜力.
结论:
- 使用磁传感器阵列开发的非接触方法为确定螺栓接头预负荷力的可行解决方案.
- 直接方法适用于移动和不那么复杂的应用程序,因为它的稳定性和独立于校准.
- 基于学习的方法在初始训练阶段后在复杂的设置中提供了更高的分辨率,提高了测量准确性.
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