基于正交多项式的称重仪表非线性校正算法  

Weight measurement algorithm based on spline interpolation and newton iteration

作　　者：孔令旺[1] 张旭东[2] 党选发[1] 李晓峰[1] 

机构地区：[1]甘肃省气象信息与技术装备保障中心,甘肃兰州730020 [2]西北区域气候中心,甘肃兰州730020

出　　处：《微型机与应用》2014年第16期71-74,共4页Microcomputer & Its Applications

基　　金：公益性行业(气象)科研专项经费(GYHY201106043)

摘　　要：针对称重仪表检测电路中输入与输出值之间存在非线性关系的特性,在比较了几种非线性校正方法的基础上,给出了一种易于微处理器实现的正交多项式的非线性校正方法,求取称重仪表检测电路的非线性特征,实现了称重仪表的非线性校正。同时讨论了该算法的原理、校正参数的空间复杂度和算法的时间复杂度,从而论证了此算法在简单微处理器上的可用性,并以3阶多项式为例介绍了该算法的实验效果。实践表明,该算法简单实用,效果较好。For the characteristics that non-linear relationship exists the weighing instrument detection circuit between input and output, comparing the basis of several non-linear calibration methods, this paper gives an easy microprocessor nonlinear orthogonal polynomials correction method. It obtains nonlinear characteristics of the detection circuit to strike weighing instruments to achieve a non-linea r correction weighing instruments. Also it discusses the principle of the algorithm, the correction parameter space complexity and time complexity of the algorithm, which demonstrates the availability of this algorithm on a simple microprocessor, and takes third-order polynomial example to introduce the experimental results of the algorithm. Practice shows that the algorithm is simple and practical.

关 键 词：正交多项式 传感器 非线性校正 

分 类 号：TP301.4[自动化与计算机技术—计算机系统结构]