Abstract : based on the fast - returning characteristic of a double - crank mechanism , the authors introduced the general problems of the mechanism synthesis according to the stroke ratio k and illustrated the design with the analysis in c program language as well as in graphic 文摘:在双曲柄机构急回特性研究基础上,文章介绍了按行程速比系数k综合双曲柄机构的一般命题,并通过实例描述了用c语言编程技术实现的解析法求解过程以及图解综合过程。
The relationship of true stress and true strain for the mid - strength weldable 1420 aluminum - lithium alloy has been investigated in this thesis by high temperature compression testing and high temperature tensile testing on different hot deformation conditions . the interdependence of flow stress , strain rate , strain and deformation temperature for the alloy at high temperature has been studied 本文通过高温压缩和高温拉伸试验,研究了中强可焊1420铝锂合金热变形时不同变形条件下的应力-应变关系、变形条件对合金流变应力的影响;运用多元回归分析方法,采用c语言编程确定了合金的本构关系方程;引入z参数,求解了部分材料常数,并用于材料的组织性能研究中。
The paper not only analyses the schemes of typical image enhancing ' s technology in theory but also draws the conclusion on the adaptability and character of all kinds of schemes . it also realizes the enhancing of motionless video images in coal mine by programs in c language , so as to make the quality of industrial tv ' s image better , , 不仅从理论上分析了典型图像增强技术的原理及算法,而且得出了各种算法的适应性及特点,并通过c语言编程应用实现了对井下静止视频图像的增强处理,从而使视频监控系统图像变得较为清晰。
In the next , we discuss the system of the meg - 1 layer i . the paper centers on the two kernel sub - parts : filtering coding and psychoacoustic model , do some research work in sub - band coding ( cbc ) theory and the relate theory such as quadrature mirror filter ( qmf ) and analyse sub - band filter ; also do research work in psychoacoustic theory especially the part related to the mpeg - 1 layer i . in the third chapter , introduce the ti tms320c6000 series dsps and their characteristics , also about the software development flow and the ti dsp / bios operating system of it . the forth chapter is the most important , firstly , according the algorithm flow in protocol , using c language validate the algorithm ; then , transplant and optimize the coding in dsp . in the processing of optimize , acording the assembler program characteristic of ti dsp , the paper put forward the analyse sub - band filter dsp optimization algorithm base on the eight spot idct . the algorithm has been optimize have greatly improved the work efficiency . make use of the technology of the dsp / bios host channels , data io pipe , software interrupt , we implement the musicam algorithm base on dsp / bios 论文首先对当前语音编码技术的发展、分类以及mpeg系列音频标准作了介绍;接着在第二章,给出了layer的musicam ( masking - patternuniversalsubbandintegratedcodingandmultiplexing )算法的系统组成,围绕分析子带滤波器和心理声学模型两个核心模块,深入研究了子带编码工作原理、比特分配及子带编码中用到的正交镜像滤波器和分析子带滤波器;探讨了心理声学基本原理和mpeg . 1layer所用到的心理声学模型。第三章对titms320c6000系列dsp作了简介,介绍了6000系列dsp结构特点、 c6000dsp软件开发流程和tidsp / bios操作系统。第四章是本文的重点,首先根据协议给出的算法用标准c语言编程实现并调试通过。
The g . 729 speech - compressing algorithm , written in c language , produces a huge amount of program codes , which cannot be stored in the chip - memory of dsp because of its 16k storing space . therefore , g . 729 speech - compressing algorithm written in c language is faced with the problems of low processing speed , and synthesis ( or real time ) . the main goal of this paper is to accomplish g . 729 speech signal compressing algorithm programmed in c54x general assembly language , and to overcome the problems above 在利用tms320vc5402进行语音信号压缩处理时,其开发软件提供了支持c等高级语言编译器,但该dsp的片上存储空间仅有16k ,如果选用c语言编程实现g . 729语音压缩算法,程序代码量过大很难都存放在片内存储器,这样运算速度降低,很难解决实时(或同步)问题。
According to requirements and experiences , industrial computer , control instruments and operation desk compose the control system . automatic , manual and hardware controls are available . the lower side controller is based on mcs51 , and the upper side computer executes monitoring software programmed with vc + + 根据需求分析并结合以往工程经验,系统控制部分由工控机、控制仪表、操作台共同组成,兼具自动、手动、硬手动等多种控制方式,下位机为基于c51的单片机系统,由c语言编程实现,上位工控机中监控软件用vc + +编程实现。
Abstract : the maximum tube distribution numbers in tube sheet limited circle for fixed tube sheet heatexchanger have been determinded by used of the superposition method with computer based on c language programming . it is characterized by determination the maximum tube distribution number according to the even number or singular number of center tube distribution . the method is simply and quickly , and can be used for the design and process calculation of heatexchangers 文摘:采用迭加的方法,使用c语言编程在微机上实现管板布管限定圆最大布管数的确定.该方法可根据中心布管数是奇排列还是偶排列来确定最大布管数,简便易行,计算速度快,对换热器的设计及工艺计算具有实用价值