一种新的基于改进实时双通滤波器的信号数字积分方案

信号积分是重要的测试测量技术手段，本文综合论述了信号数字积分问题的提出、数字积分中面临的问题及解决方法。着重研究了信号数字积分技术的核心问题，即低频噪声造成的积分器不稳定问题。本文首先将一种改进的实时双通滤波算法应用于低频干扰消除，以解决积分器不稳定问题。其次，本文研究对比了目前多种数字积分算法的优缺点及性能，选择了目前最优的数字积分算法。将选择出的积分算法与实时双通滤波结合，保证了积分后信号幅值、相位精确不失真，并且保证了数字积分的实时性；从而为数字积分在测试测量及其它相关应用领域的推广应用奠定了基础。仿真研究表明，本文的方案具有较好的精度。

A novel modified real-time two-pass filter based digital integration scheme

This paper discusses the origin of signal integration,the problems associated with it,and some solutions.The key problem restricting extension of digital integration technology is that the low frequency noise makes the digital integrator very unstable.In this work,a modified two-pass filter algorithm is used in the noise cancellation.After a comparative study of the algorithm properties and efficiency range behavior of many integrators,an optimal digital integration algorithm is chosen.In this paper,a novel integration process combining the new two-pass filter and the optimal integrator is described.This approach allows an accurate measurement of phase and amplitude.Computer simulation proves that our approach is feasible.