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identification paper的中文,翻译,解释,例句

identification paper

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A numerical calculation program is written up for the various solution methods in this paper and the program is being used in various aspects of inverse problem of environmental hydraulics, including inverse problem in reverse process of one-dimensional unstable diffusion, inverse problem in reverse process of convection-diffusion, inverse problem for the dispersion coefficient in water quality model, The inverse problem of coefficient identification for nonlinear Boussinesq equation, parameter identification inverse problem for water quality model, the inversion of parameter of BOD-DO water model, the inverse problem of the source of convection-diffusion, identification of the steady-state permeability for two dimensional isotropic medium, two-dimensional steady inverse problem of convection-diffusion and parameter identification inverse problem for two-dimensional parabolic equation, etc.

对本文提出的各种算法,编制了数值计算程序,并把它应用于环境水力学反问题诸多领域,包括污染物一维非恒定扩散逆过程反问题,对流扩散方程逆过程反问题,河流水质纵向弥散系数反问题,非线性Boussinesq方程反问题,河流水质多参数识别反问题,BOD-DO水质模型参数反演问题,对流—扩散方程源项反问题及二维恒定各向同性介质渗透系数反问题,二维定常对流——扩散方程及二维抛物型方程参数控制反问题等。

Firstly, this paper investigated roundly the basic theory of the ambient vibration method, analyzed systematically the main methods of ambient vibration identification, and discussed their advantages and disadvantages. Then we established the finite element model of structural dynamics and test model and analyzed their mutual relation, improved MUSIC method and correlation function method in the harmonic identification, and gave the subspace method and correlation function method based on continuous model, which is multi-harmonic retrieve technique. And then, this paper also puts forward least-squares method to estimate directly structural physical and modal parameters; this approach replaced the derivative operator in the continuous time model with an equivalent approximation, and estimated the physical parameters of structures by the least-squares method. And then, we discussed the approximation methods of derivative and their convergence. Finally, this paper researched the modal parameters of a frame structure by the simulation and test. The results demonstrated that subspace method, correlation function method and the least-squares method are effective and stable respectively.

全面地研究环境振动识别方法的基本理论,系统地分析环境振动识别方法的主要方法,讨论它们的优点和不足;建立结(来源:6666AB44C论文网www.abclunwen.com)构动力学的有限元模型和试验模型,分析有限元模型与试验模型之间的相互关系;改进谐波识别中的MUSIC识别方法和相关函数识别方法,给出大型结构模态识别的连续型的子空间分解识别方法和相关函数识别方法,这个方法是多元谐波识别方法;提出直接识别结构的物理参数和模态参数的最小二乘方法,这个方法利用导数的近似值代替导数值,并运用最小二乘方法识别结构的物理参数,讨论导数近似值的选择方法,分析算法的收敛性;通过仿真计算和模型实验,研究高层框架结构的模态参数识别,验证子空间分解识别方法、相关函数识别方法和最小二乘识别方法的有效性,算法的稳定性;从理论和试验两个方面分析和研究噪声对识别精度的影响,影响识别精度的因素,以及部分模态成分的模态参数不能够被识别的原因。

The technology of Radio Frequency Identification has been recognized as one of the top 10 technologies in the 21st Century. This Paper is taking as from a Electro-Optical company's point of view, considering how RFID systems would, under most economical and effective conditions, establishes a partial miniature RFID systems within an enterprise yet still keeps the vertical upwards or downwards expansion mechanism.

中文摘要无线射频辨识系统(Radio Frequency IDentification,简称RFID)技术被公认为21世纪十大重要技术,本论文以一个光电公司的角度思考RFID系统如何在最经济与确保有效的状况下,在企业内建置一套局部小型的RFID系统,并保有可垂直向上与向下扩充的弹性机制。