1) method of first order difference
一阶差分法
1.
Being directed against the strange signals in feed forward AGC in Benxi Iron and Steel Company, this paper applies the method of first order difference to forecast the change of signals, and thenpretreats them.
针对本钢热连轧前馈ＡＧＣ中采样信号出现的奇异项，本文采用一阶差分法来预测信号变化，进而对奇异信号进行预处理。
2) First Order Generalized Difference Scheme
一阶广义差分法
3) first order differential
一阶差分
1.
The classical moving average technique and first order differential were used for segmentation.
先采用移动平均法(moving average,MA)和一阶差分法确定SEMG信号中对应的每个动作波形的起止点,再利用递归量化分析(recurrence quantifica-tion analysis,RQA)方法提取各种动作波形的非线性特征参量(确定率、递归率等),由两路SEMG信号的这些特征参量构成特征矢量,输入BP(back propagation)神经网络,完成对不同动作的分类。
2.
Combined with the first order differential algorithm, this method has solved the problem successfully.
针对双电位器式传感器检测系统存在的跳区现象，提出了一种新的判区方法，并结合一阶差分算法成功地解决了跳区问题，同时也提高了系统的抗干扰能力。
4) first difference
一阶差分
1.
At the meantime,during the procedure of pre-processing,according to the character that the illumination conditions on the scene of the expressway toll collection frequently change a lot,the algorithm of first difference combining the method of fixing the threshold of binarization via accumulating the points was used to complete the job of extracting the outline of the image.
在图像预处理过程中,根据高速公路收费站点光照条件不断变化的特点,采用一阶差分算法并结合累积像素点确定二值化阈值的方法,完成图像边缘轮廓的提取工作。
2.
Realizing of algorithm of composite data filter and eliminating singular term using first difference method in data collection and processing were analyzed and calculation results were given.
介绍了建材检测微机控制系统总体结构,详细分析了数据采集与处理过程中复合数据滤波、一阶差分法剔除奇异项算法的实现过程,给出了计算结果。
5) first order difference
一阶差分
6) first order differential Fourier algorithm
一阶差分傅立叶算法
补充资料：对称差分(n阶的)
对称差分(n阶的)
symmetric difference of order
对称差分(n阶的)l另11111州tric山ffer曰℃eof份der‘c“MMe邓一，ecK即pa3Hoc几“op，皿Kan」，一元实变函数f在点x上的 表达式 声/n、，.、。，/.n一Zk八 △口ffx，h)=)l:’1(一1)“f lx十二二~一竺二生h 1. 一‘““一””k饥戈k/、‘产“戈一2‘’/‘将h换成Zh，下面的表达式也称为对称差分: 息川(一1)*，‘二+、。一2、)。).假若f(x)在x有n阶导数厂时(x)，那么 △二f(x，h)=./戈n)(x)h”+o(h”). T .fl .J’IyKame皿。撰
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条