定点计算

MLP神经网络定点计算及误差分析

Fixed-point calculation and error analysis of MLP neutral network

主要计算内容及结论如下：1.定点计算。

The main calculation contents and conclusions are as follows : 1 . Fixed-point calculations .

距离计算：根据给定点计算它到其他点的距离。

Distance calculation : Given a point , calculate the distance to one or more other points .

该数据通路以功能强大的16位定点计算单元为基础，搭建起高速16位数据处理平台；

Based on its several 16-bit fixed-point computational units with powerful functions , the data path forms a 16-bit high-speed signal processing platform .

给出了定点计算三角函数、开平方等初等函数的误差分析，并对该算法进行了改进，使计算精度达到火控总体的要求。

Also the error analysis of elementary functions , such as trigonometric and square root functions for fixed point computing , is given .

经仿真和实际运行，应用这些方法可以在十六位字长定点计算的处理器上，有效的降低噪声和谐波的干扰，提高功率因数角测量的精度。

The results of emulation and running on chip showed that the software can improve the precision in calculation of power factor effectively .

以Mel倒谱系数为说话人特征，运用主成分分类技术，结合定点数计算技术实现实时说话人自动识别。

Based on fix-point and principal component analysis technology , the realization of real-time text-independent speaker recognition system , which takes Mel frequency cepstral coefficients as the feature parameter , is presented .

推导了计算机定点运算中计算坐标转换的统一的CODIC算法公式。

The unified formulas are deduced , which are used to calculate coordinate conversion in fixed point computing .

目的通过对拇腕掌关节面定点测量，计算弧长和曲率，为探讨拇腕掌关节的功能提供几何形态参数。

Objective To get the geometric parameters of the articular surface of the trapeziometacarpal joint for dynamic analysis of the joint .

先由四个标定点的坐标计算出透视投影矩阵，从而计算出标定模板上其它节点的图象坐标，之后进行内部参数和外部参数的计算。

First compute the perspective projection matrix according to the coordinates of the four control points , then the image coordinates of the other control points on the model plane , and at last compute the internal and external parameters .

用CCD摄像头摄取标定点图像后，计算各像素的梯度值，设定一定的阈值，提取出过渡区域的像素，利用这些像素的位置信息和灰度信息求解标定点圆心的位置。

After getting the images of calibration points by CCD cameras , we can calculate the gradient of pixels , distill the pixels of transition area through a settled threshold , and use the position and gray information of these pixels to calculate the center of the calibration points .

定点测量倾斜偏角计算方法分析

Analysis of the computation method for measuring the angle of bank deflection at fixed point

烟尘监测中定点测试值加权计算误差范围的探讨

The discussion of errors range of weighting calculation for the fixed-point test value in the flyash monitoring

此外，多媒体应用领域更多的是基于以字为单位的数据类型的定点运算，这些计算密集型的任务更适合于粗粒度的体系结构。

Furthermore , multimedia applications stress integer arithmetic on word-organized data and thus benefit from a coarse-grained architecture .

通过对车体结构在九个静强度工况和五个定点加载工况的计算分析，以及相关的模态计算证明了结构的强度、刚度、模态的合理性。

Concluded in the nine static strength working conditions and the calculation of the five designated loading conditions , the body structure , structural strength , stiffness , modal meet the design requirements .