基于DSP智能型积分器设计
Design of Intelligent Integrator Based on DSP
缪晶 1肖炳甲 1季振山1
作者信息
摘要
传统模拟积分器由于运放和积分电容的不理想,存在着零点漂移、非线性误差以及泄漏等问题。当积分时间t不断增加时,积分漂移随之线性增加,成为影响积分输出精度的重要因素之一。利用DSP算法灵活性以及其信号处理的卖时性,设计了一种智能型积分器。该积分器前端采用模拟积分器,后端采用DSP线性拟合算法处理进行积分补偿,实现对信号的长时间积分。同时采用Iqmath库函数实现定点处理器的运算来提高实时精度,很方便的实现了实时而准确的积分处理。
Abstract
Because the operation amplifier and capacitor is not ideal,analog integrator has many problems such as drift,nonlinear error and capacity leakage.Along with the growth of the integrator time t,the integrator＇s drift is linearly increasing,so it becomes one of the most important factors affecting integrator＇s output precision.Using DSP algorithm flexibility and its signal processing of real -time,design a kind of intelligent integrator.The integrator front-end using simulated integrators,back-end using DSP linear fitting method to compensate for integrator output,it realize the long time integral to signal.Meanwhile,we also using fixed-point processor Iqmath library functions to achieve real-time computing to improve the precision,very convenient realized real-time and accurate integral processing.
关键词
DSP/漂移/线性拟合/补偿Key words
DSP/drift/linear fit/compensate引用本文复制引用
基金项目
科技部资助项目(2009GB103000)
国家自然科学基金(10835009)
出版年
2012
NETL
NSTL
维普
万方数据