基于滑动窗全相FFT和卡尔曼过的时间差异检测,用于精确的流量测量
Jiaqi Jing1, Dezhi Zheng2,3, Shangchun Fan1
1School of Instrumentation and Optoelectronic Engineering, Beihang University, Beijing 100091, People's Republic of China.
The Review of scientific instruments
|April 12, 2024
概括
本研究引入了科里奥利斯质流量计 (CMF) 的新方法,通过使用滑窗和全相FFT来检测时间差异来提高精度. 使用卡尔曼波器可以提高稳定性和响应速度,从而提高CMF的性能.
科学领域:
- 仪器仪表与测量科学 仪器仪表与测量科学
- 流体动力学和控制流体动力学
背景情况:
- 科里奥利斯质流量计 (CMF) 对于精确的质流率测量至关重要.
- 对于CMF的传统频域方法面临频谱泄漏的挑战,影响准确性.
- 现有的方法需要提高工业应用的稳定性和响应速度.
研究的目的:
- 为CMF开发一种新的时差检测方法,以克服频谱泄漏.
- 为了提高CMF测量的稳定性和响应速度.
- 验证拟议的方法以提高工业适用性.
主要方法:
- 采用滑动窗口和全相快速里埃转换 (FFT) 实现了一种新的时间差异检测技术.
- 通过考虑信号频率变化,减少了计算复杂性.
- 应用了卡尔曼过算法,包括差异检测,用于高级后处理和信号稳定.
主要成果:
- 拟议的方法有效地减轻了CMF中的频谱泄漏.
- 在单相流体中实现了优异的精度,比0.5‰更好,重复性比0.2‰更好.
- 在测量稳定性和响应速度方面显著改进.
结论:
- 新的时差检测和卡尔曼过方法显著提高了CMF的准确性和性能.
- 经过验证的系统为工业质量流量测量提供了强大的解决方案.
- 这一进步支持科里奥利斯质流量计的更广泛,更可靠的工业应用.
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