【摘要】 为了在提高科氏流量计频率解算精度的同时兼顾频率跟踪的实时性,提出了一种基于改进自适应算法的频率解算新方法。通过重新构建基于优化零极点配置的自适应IIR滤波器,在自适应滤波的过程中动态调节陷波器的模型和步长,使之能够更好地跟踪实际信号的频率,提高了科氏流量计频率解算的快速性和稳定性。更多还原

【Abstract】 This paper presents a new method of frequency calculation to improve the accuracy of frequency for the Coriolis flowmeter,as well as the frequency tracking in real-time.A new method based on the improved ALE frequency calculation is presented,through optimizing the pole-zero configuration of adaptive ⅡR filter,adjust the model and step size of the adaptive filtering dynamically,in order to track the actual signal frequency more efficient.Both the theoretical analysis and the field test prove that the improved algorithm has a good performance in real-time tracking and frequency calculation.更多还原