Abstract：In order to process the time-varying output signals of Coriolis mass flowmeter, the method based on Hilbert transform is adopted and investigated. Polyphase decimation filter and band-pass filter are applied to filter out noise respectively, then the original signal is combined with the output of its Hilbert transform to build the analytic signals. By co-conjugate multiplying them the phase difference is calculated, and the fluid mass flow measurement is implemented. A variety of methods are summarized and optimized to realize the Hilbert transform,while simulations are carried out for comparing them. The simulation and experimental results show that the method gets a good real-time performance and meets the measurement requirements.
刘维来, 赵璐, 王克逸, 冯志华, 龙潜. 基于希尔伯特变换的科氏流量计信号处理[J]. 计量学报, 2013, 34(5): 446-451.
LIU Wei-lai, ZHAO Lu, WANG Ke-yi, FENG Zhi-hua, LONG Qian. Signal Processing for Coriolis Mass FlowmeterBased on Hilbert Transform. Acta Metrologica Sinica, 2013, 34(5): 446-451.
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