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科氏流量计振动频率的精确获取是质量流量测量的重要环节,为了提高频率获取的精度和稳定性,文章采用AR模型中的Marple算法进行科氏流量计的振动频率估计,对Marple算法的估计方法及影响估计精度的相关的因素进行探讨,针对科氏流量计的频率范围在计算机上进行仿真,仿真结果证实该Marple算法的频率估计精度高于流量计的一般要求,并且具有更好的稳定性和估计的一致性。
In order to improve the accuracy and stability of frequency acquisition, the Marple algorithm of AR model is used to estimate the vibration frequency of Coriolis flowmeter, and the estimation of Marple algorithm Method and the factors affecting the accuracy of the estimation are discussed. The frequency range of the Coriolis flowmeter is simulated on a computer. The simulation results show that the Marple algorithm has a higher frequency estimation accuracy than the general requirements of the flowmeter and has a better stability Sex and estimated consistency.