parameter card
1.On the basis of Bass model and product life circle model with repurchase,the author brings out the repurchasing model,discusses the estimate method of parameter in details,and analyzes the diffusion process of bank card industry as well as the sensibility of the parameters. Then this paper forecasts the sales volume of products further,and indicates the validity of the estimation method on model and the influence of industry relativity.
2.In accordance with the practice,both model of deformation and the model of force and energy parameter most in use are adopted for program design with C language. On the basis of this,a practical CARD system for channel is designed with Auto CAD software.
3.In this paper, is discussed the processing parameter of the special waveform seven gauge points between wire flat and cylinder on C4 card. This wave- form gauge can slightly reduce nep and short fibres of carded sliver, and improve the quality of carded sliver or yarn, no matter what the distribution of subgrade cotton, or standard grade cotton or polyester may be.
7.The simulation result indicates that the design mentioned in the paper can be conveniently and effectively appllied to the image processing card to accomplish the functions of the dataflow controls (I2C operation、image transform parameter data transmission、DDR-SDRAM controller、PC-FPGA communication,etc).
8.Introduced a PC-DAQ based virtual instrument system which is composed ofdata acquisition card and signal conditioning circuit,which adopts multithreadtechniques,double-buffering techniques, database techniques and the idea of modulardesign. the continuous real-time data acquisition of multi-parameter is realized.
9.Aiming at the producing character which the unlike material compound sucker rod is extensively used in deep well, the numerical solution method of system simulation model have been founded which include the change step display and implicit difference numerical solution, combining two difference numerical solution to solve the wave equation quickly, Compared the simulation and actual measurement dynamometer card, the result dovetail with actual status, comparative analysis the impact of differ well fluid viscosity to suspended center dynamometer and systems dynamics parameter.
