tangent function

New Variable Step Size Constant Modulus Algorithm Based on Hyperbolic Tangent Function

基于双曲正切函数的变步长盲均衡算法

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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。

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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。

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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。

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Two inequalities related to tangent function are proved in this paper.

证明了与正切函数相关的两个不等式.

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Results There is tangent function relation between organic solvent optical density and ethanol concentration(≤ 45%).

结果在480nm处有机相吸收值与乙醇含量（≤45%）呈正切函数关系。

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In order to let the system run smoothly and let the signals in the system tend to be smooth, the hyperbolic tangent function, instead of sign function, is adopted in design of the robust control terms.

其中，在设计鲁棒控制项时，采用双曲正切函数代替常用的符号函数，使得系统信号趋于光滑，运行更顺利。

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Popularization of Two Inequalities of Tangent Function

正切函数两个不等式的推广

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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

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A Modified Global Base Expansion Method Based on the Tangent Function Transformation and Its Application

基于正切函数变换的改进型全域基展开法及其应用

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This paper proposes a new kind of solitary wave solution to Fisher Equation through a function ′ s tangent function variation.

本文通过函数的正切函数变换给出Fisher方程的新孤波解。

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Method: Based on dynamic error correction BP artificial neural network with Hyperbolic Tangent function as activation function and the number of hidden node six.

方法：利用动态学习比率BP算法以双曲正切函数为功能函数的非线性时间序列预测方法。

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To overcome the false result with piecewise constant regions produced by the binary zero-crossing decision process, a hyperbolic tangent function is used to substitute the symbol function, governing softly the varieties of gray levels of pixels beside the zero-crossing of edges.

为了克服二值的零交叉决策过程导致的虚假的分片常数图像，利用双曲正切函数代替符号函数，柔和地控制边缘的零交叉点两侧像素的灰度值变化。

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Presents a kind of sliding mode controller, to eliminate chattering, use the hyperbolic tangent function instead of sign function.

提出一种滑模控制策略，采用双曲正切函数代替符号函数，消除了抖振。

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The steady automatic tangent line function has improved working efficiency.

稳定的自动切线功能提高了工作效率。

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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。

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Another is to intenerate the input vectors by hyperbola tangent function.

二是采用双曲线正切函数柔化输入矢量.

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Image Compression of BP Neural Network with Hyperbolic Tangent Non-linear Function and Adding Mean Quantization Algorithm

双曲正切非线性函数和加均值量化算法对BP神经网络图像压缩处理的影响

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At last, by utilizing the property of hyperbolic tangent saturation function and MRP, the attitude regulation and tracking control algorithms are designed.

最后利用双曲正切函数的性质和MRP自身的性质，分别设计了控制输入受限情况下的姿态调节和跟踪控制算法。

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The paper select hyperbolic tangent function as activation function, whose (-1,+ 1) value range is more suitable for this network output.

文中选择双曲正切函数作为激励函数，其（-1，+1）的值域范围更适合本文的网络输出。

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Secondly, a sliding mode variable structure control law with good robustness and rapidity is designed. We use reverse hyperbolic tangent function to aviod the chattering problem in sliding mode variable variable structure control.

其次设计了一个具有良好的鲁棒性和快速性的滑模变结构控制律，采用了反双曲正切函数，避免了滑模变结构控制中的抖振问题。

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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。

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The Fuzzy Numerical Tangent Function and Cotangent Function

模糊数值正切函数与余切函数

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An Adaptive Image Magnification Based on the Hyperbolic Tangent Function

一种基于双曲正切函数的自适应图像放大算法

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The advanced instrumented impact test equipment and the method for treating test data with the hyperbolic tangent function ensure the accuracy of results.

采用了仪表化冲击试验设备和双曲正切函数回归计算的数据处理方法，因而确保了实验结果的准确性。

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In the collinear geometry, there are always some non-conjugate component in the reflected wave, and the functional relation between reflection coefficient of amplitude and the thickness of sample can have the form of tangent function, hyperbolic tangent function and linear function;

在共线装置中，在反射波中总含有一定的非共扼的成分，振幅反射系数与样品厚度的关系可能是正切、双曲正切或线性函数关系；

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Then, a robust compensation term is developed in form of hyperbolic tangent function to obtain a smooth control input without chattering phenomena.

之后，设计了双曲正切函数的鲁棒补偿项，从而得到一种没有抖振的平滑控制输入。

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Adaptive mutation of cells population was realized by using hyperbolic tangent function to determine mutation probability without considering limitation of affinity.

利用双曲正切函数，无须区分亲和度界限，决定个体细胞的变异率，实现细胞群的自适应变异；

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10.What part of an inverse tangent function approaching an asymptote don't you understand?

反正切曲线接近渐近线哪个字你不明白啊？

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The result of the experiment shows that real time image collecting system could collect image data from CMOS sensor in real-time. Stokes vector and reverse tangent function computing arithmetic is proven to be correct by the result of simulation.

实验结果表明了图像采集系统能够实时采集CMOS图像传感器输出的图像数据，仿真结果表明Stokes矢量和反正切函数计算算法是正确的。

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