基于PXI的数字式长时间积分器

A Digital Long-time Integrator Based On PXI

传统模拟积分器存在着零点漂移、非线性误差和电容泄漏等问题,通过对传统模拟积分器及数字式积分器的深入调研,以及PXI系统的学习,设计了基于PXI的数字式长时间积分器,该积分器减小了非线性误差和泄漏现象。主要思想是首先对信号进行数字积分,然后通过某种算法扣除数字积分的零漂,来修正积分结果。测试结果证明基于PXI的数字式长时间积分器有效地降低了零点漂移,比传统模拟积分器更加灵活的功能。

There are some problems with analog integrator such as drift,nonlinear error and capacity leakage.Through an in-depth study of analog integrator,digital integrator and PXI.The digital long-time integrator based on PXI was designed and developed and the integrator decrease nonlinear error and capacity leakage.The main idea：integrate the signal in digital way,and then deduct the drift of digital integrator through some algorithm.The results of test show that the integrator decrease the drift and is more flexible function than analog integrator.