arc tangent

Various conversion manners are defined , including linearity , logarithm function , tangent function and arc tangent function .

定义了不同的强度-相位转换方式，例如线性方式、对数函数方式、正切函数方式、反正切函数方式等。

Implementation of arc tangent function using assembly in fixed-point DSP based on differential evolution algorithm

实现定点DSP汇编层反正切函数的差分进化算法

A fast algorithm uses sub section lines to near some functions of arc tangent .

本文对常用的反正切函数进行了分析，利用分段直线对其进行拟合，提出了一种浮点运算变定点运算的快速算法。

Because the arc tangent reduced look-up table ( LUT ) bulk , the optimization algorithm greatly saved the hardware resources .

该优化算法根据反正切函数本身的对称性，能够极大地减少反正切运算耗费的硬件资源。

The results show that the model has good fitting precision . It is more reasonable than traditional modified arc tangent function or hyperbolic function model for the saturation characteristic of transformer .

结果表明，与已有的修正反正切函数或双曲函数模型相比，该模型不仅具有较高的精度，而且对变压器饱和特性的模拟也更为合理。

Compared with traditional methods , the approximating polynomial calculated by DE is of high accuracy and low order , and the real-time behavior of the arc tangent function designed by DE is much better than C library function .

与传统方法相比，差分进化算法求得的逼近多项式精度高、阶数小，设计出的反正切函数实时性远优于C库函数。

Based on differential evolution ( DE ) algorithm , a method of fast implementation of the arc tangent function with high accuracy using assembly in fixed-point DSP is proposed . The validity and real-time behavior of this method is tested in a large scale .

基于差分进化算法，提出一种在定点DSP汇编层快速实现高精度反正切函数的方法，并对该方法在确定精度范围内的正确性和实时性进行了测试。

Thesis analyzes superposition average algorithm of tradition and pointed out the limitations of the algorithm , the problems about that the residual interference noise and the incubation period of disturbance , proposes a superposition averaging algorithm based on the arc tangent function of the IIR filter .

论文分析传统叠加平均算法并指出该算法的局限，对残留干扰噪声及潜伏期的扰动问题，提出一种基于反正切函数的IIR滤波器叠加平均算法。

Exponential and arc - tangent distributions of oil and gas production decline

产量递减的指数分布和反正切微分分布规律

To apply the control technology of three-dimensional double-target-point arc internal tangent hitting-targets to drill tow-target variable-orientation azimuth multi-target well , has provided successful drilling experience for developing remaining oil in fault block oil reservoir and different oil reservoir .

采用三维双靶点圆弧内切线中靶控制技术，打双靶变方位多目标井，为今后开发断块油藏和不同油层间的剩余油提供了成功的钻井经验。

By means of uniting geometry with algebra , the arc length , tangent line , cotangent space and curvature of curve in four dimensional space are investigated , and the corresponding calculation formula in each cases are given .

用形数结合的观点研究了四维空间中曲线的弧长、切线、法空间和曲率问题，并给出了其计算公式。

the season-ending arc has involved a tangent about deceptive online advertising .

本季结尾的剧情中突然插入了一段讲欺骗性网络广告的内容。

Circular interpolation of time-sharing algorithm is that circular arc is approached with tangent or chord line .

时间分割法圆弧插补用切线或弦线来逼近圆弧。

The application of co & ordinate transfer in arc , cone and tangent gear wheals

坐标变换在弧齿圆锥齿轮切齿调整计算中的应用