一种高精度动态角差补偿算法

A High Accurate Dynamic Phase-shift Compensation Algorithm

针对现有主流角差补偿算法的补偿准确度低、稳定性差的特点,本文提出了一种高精度动态角差补偿算法。该算法依据电路模型的信号传输特性,通过严格的数学计算和数值仿真分析,以及闭环动态补偿机制,使其不仅兼顾了经典牛顿插值算法的优点和FIR数字滤波器严格的线性相位特性,而且实现了温漂特性的实时补偿。该方案的仿真分析和实验测试数据论证了算法的有效性、具体设计流程与实现方法的合理性,在高准确度电能表的实际应用中具有一定的参考价值。

According to the situation of low compensation accuracy and poor stability existing in mainstream phase-shift compensation algorithm,this paper presents a high accurate dynamic phase-shift compensation algorithm.The algorithm is mainly based on circuit signal transmission characteristics of the physical model,and combines with strict mathematical calculation,simulation and closed-loop dynamic compensation mechanism.Therefore,the algorithm not only has the advantages of both the classical Newton interpolation algorithm and strictly linear phase characteristic of FIR linear phase digital filter,but also can real-time compensate temperature drift characteristics.Its simulation analysis and experimental test data demonstrated the effectiveness of the algorithm,comprehension of specific design process and implementation method.This solution is useful to high-accuracy watt-hour meter.