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parameter   extraction
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      The solubility parameter is usually determined at room temperature.
     通常溶度参数是在室温下测定的.
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     estimation of its parameter;
     评定运动模糊的参数;
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     and b was empirical parameter.
     b为经验常数。
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     Aerodynamic parameter identification of rapid self-rotating flight vehicle
     高速自旋飞行器气动参数辨识
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     kishidai Nakamura and G.
     kishidaiNakamura、杨谷舟蛾G.
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The properties of linear networks can usually be characterized better by symbolic network functions than by numerical analysis results. This paper describes a network function as a rational fraction with the aid of the determinant and a relevant cofactor of the network nodal admittance matrix. The parameter extraction method is used to express the numerator and denominator of the fraction, respectively, as the sum of a number of items,each of which is a product of a symbolic parameter or a...

The properties of linear networks can usually be characterized better by symbolic network functions than by numerical analysis results. This paper describes a network function as a rational fraction with the aid of the determinant and a relevant cofactor of the network nodal admittance matrix. The parameter extraction method is used to express the numerator and denominator of the fraction, respectively, as the sum of a number of items,each of which is a product of a symbolic parameter or a combination of some symbolic parameters and a polynomial with respect to the complex frequency S. The interpolation approach is used to calculate the real coe-ficients of the polynomials. Some improvements have been made to the parameter extraction method, which makes the whole algorithm simpler and more effective.

符号网络函数,与网络的数值分析结果相比,往往可以更好地描述线性网络的性能。本文借助于网络的节点导纳矩阵的行列式及有关的代数余子式将网络函数表示成有理分式,采用参数抽取法将分式的分子和分母分别表示为若干项之和,这些项分别为各个网络符号元件或它们的可能的组合与一个关于复频率S的多项式的乘积。多项式的各阶实系数采用插值法进行计算。笔者对参数抽取法的策略作了改进,使整个算法简单而有效。

This paper analyses the limitation cause of SPICEⅡ program used to simulate the characteristics of depletion mode MOSFET and discribes the characteristics of depletion mode device in saturated and linear regions by using the saturated threshold voltage and linear threshold voltage. The paper also, discusses the difference between saturated and linear threshold voltage versus the back bias voltage, and presents a model of depiction mode MOS transistor and a new parameter extraction method. The simulation...

This paper analyses the limitation cause of SPICEⅡ program used to simulate the characteristics of depletion mode MOSFET and discribes the characteristics of depletion mode device in saturated and linear regions by using the saturated threshold voltage and linear threshold voltage. The paper also, discusses the difference between saturated and linear threshold voltage versus the back bias voltage, and presents a model of depiction mode MOS transistor and a new parameter extraction method. The simulation results are in good agreement with experimental data.

分析了SPICEⅡ程序模拟耗尽型MOS器件所遇到的限制及其原因,用线性区阈电压和饱区阈电压描述耗尽型器件线性区和饱和区特性,讨论了饱和区阈电压与线性区阈电压之差随衬偏电压变化的关系,建立了耗尽型MOS器件模型及其参数提取的新方法。模拟结果与实验基本吻合。

The main problems of the optimal parameter extraction for IC bipolar model are analysed. A method of stepped global optimization of DC parameter is provided for GP model. This method includes the formulation of the forward reverse objective function, the step for parameter extraction, the determination of the iniatial values and the program of the parameter global extractions is developed. This paper introduces the successful application of the program to IC bipolar device....

The main problems of the optimal parameter extraction for IC bipolar model are analysed. A method of stepped global optimization of DC parameter is provided for GP model. This method includes the formulation of the forward reverse objective function, the step for parameter extraction, the determination of the iniatial values and the program of the parameter global extractions is developed. This paper introduces the successful application of the program to IC bipolar device.

本文给出了采用分步式总体优化提取双极GP模型直流参数的方法,其中包括双向目标函数的建立、参数提取等级的划分和初值的确定,以及模型参数的全城总体提取。文中介绍了用该法编制的程序及其成功的应用。

 
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