Adaptive Algorithm for Estimating Vortex Frequencies in Vortex Sonic Flowmeters
DOI:
https://doi.org/10.14529/ctcr160308Keywords:
vortex flowmeters, vortex sonic flowmeters, algorithm for estimating vortex shedding frequency, time seriesAbstract
The article focuses on the development of vortex shedding frequency estimation algorithm. It shows the difficulties of the application of classical algorithms (moving average and median filtering) for whole measurement range of vortex sonic flowmeter. These algorithms are effective at the high flow region, where frequency of arrival of information about vortex frequency is high. However, at the low flow region where aforementioned frequency equals to tenths of hertz these algorithms are ineffective.
A new adaptive algorithm is offered which can operate in a whole range of flowmeter measuring. It combines an ability to react immediately if a flow starts changing, and to provide stable measurements if the flow is stable. The simulation of the proposed algorithm is implemented and its advantages over the algorithms used in serial manufacture are shown. It is noted that the developed algorithm does not need in powerful computing facilities.
References
Преобразователи расхода вихреакустические Метран-300ПР. Руководство по эксплуатации. – http://www2.emersonprocess.com.
Кремлевский, П.П. Расходомеры и счетчики количества. Справочник / П.П. Кремлевский. – Л.: Машиностроение, 2004. – 701 с.
Pankanin, G.L. The vortex flowmeter: various methods of investigating phenomena / G.L. Pankanin // Measurement science and technology. – 2005. – No. 16. – P. R1–R16.
Pankanin G.L. Influence of vortex meter configuration of measure signal parameters / G.L. Pankanin // Instrumentation and Measurement technology conference, 1993, IEEE. – IEEE, 1993. – P. 337–340.
Hongjun Sun. Digital signal processing based on wavelet and statistic method for vortex flowmeter / Hongjun Sun, Tao Zhang, Hua-Xiang Wang // Proceedings of the third international conference on machine learning and cybernetics. – 2004. – No. 5. – P. 3160–3163.
Sun Zhi-qiang. Application of Hilbert-Hang transformer to denoising in vortex flowmeter / Sun Zhi-qiang, Zhou Jie-min, Zhou Ping // Journal of central south university of technology. – 2006. – Vol. 13, no. 5. – P. 501–505.
Meng Hua. High precision flow measurement for an ultrasonic transit time flowmeter / Meng Hua, Wang Hui, Li Mingwei // Intelligent system design and engineering application, 2010. – IEEE. – 2010. – Vol. 1. – P. 823–826.
Корн, Г. Справочник по математике для научных работников и инженеров. Определения, теоремы, формулы / Г. Корн, Т. Корн; пер. с англ. И. Г. Абрамовича. – М.: Наука, 1973. – 832 с.
