数字测量系统失调和量程及非线性的一种校正方法  

A Correction Method for Offsets and Scale and Nonlinearity in Digital Measurement System

作　　者：龙泳[1] 陈光梦[1] 刘祖望[1] 张玲[1] 

机构地区：[1]复旦大学电子工程系,上海200433

出　　处：《传感技术学报》2005年第1期162-164,170,共4页Chinese Journal of Sensors and Actuators

摘　　要：失调、量程及非线性的校正 ,是测量系统中的一项关键技术。本文提出了一种基于单片机系统的软件校正方法 ,可以代替传统的硬件调节电路 ,一次性完成对失调、量程及非线性的校正。该方法采用二次方程和拉格朗日插值公式相结合的软件算法 ,可以快速地获得校正系数和测量结果 ,同时提出了软件分离的方法真正实现软件加密 ,保护测试软件的知识产权。It is one of the key techniques to correct nonlinearity, scale and offsets in a measurement system. A software correction method based on MCU system is represented here. Replacing the hardware circuits, the software method can implement the correction of nonlinearity, scale and offsets at the same time. Combining the Quadratic Equations and Lagrange Interpolating Polynomial, the software method can obtain the correction indexes and measurement results with less computing time and less memory. Moreover, the whole program can prevent being pirated by dividing it into two parts.

关 键 词：失调 量程 非线性 单片机系统 软件校正 软件加密 

分 类 号：TM933[电气工程—电力电子与电力传动]