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Considering the mean square of the dynamics longitudinal force on the drawgear as an object function, and considering the rigid impact probability as a constraint condition, the optimizing software named TTCFDOS (Tractor-Trailer Combinations Flexible Drawing Optimization System) has been developed.

在对上述确定性参数系统进行频域分析的基础上,以牵引架上动态纵向力的均方值为评价指标和目标函数,以刚性冲击概率为约束条件,开发了挂接车辆柔性牵引优化设计软件系统TTCFDOS,对挂接车辆的柔性牵引参数进行了优化设计,获得了与挂接车辆经常行驶工况相对应的优化柔性牵引参数

Based on the idea of the structure parametric design method, the parametric finite element model of drill chuck with complicated spiral surface character was established.'The related key technologies of drill chuck's strength analysis were discussed and solved, such as the contact analysis parameters selection, the boundary conditions and the load processing, ANSYS command一string building and so on.

本文采用结构参数化设计方法建立了含有复杂螺旋曲面特征的钻夹头参数化有限元模型;探讨和解决了钻夹头夹紧强度分析中夹爪与螺母接触分析参数的选择、约束边界和载荷处理、分析流程文件创建等关键技术问题。

In order to avoid repeating job in the most extent and improve efficiency of design, using the idea of structure parametric design. Based on APDL, the FEA drill chuck model can be easily created by adjust several geometric parametric and the process of FEA is automatically executed.This paper discusses the affections of different parameters for the stress capability of drill chuck. The high efficiency drill chuck strength analysis system can help designer develop new products.

为避免重复工作和提高分析效率,本文结合ANSYS提供的二次开发参数化设计语言APDL,实现了对有限元分析软件ANSYS命令流的调用,解决了通用程序与专业需求之间的矛盾,完成了钻夹头有限元参数化程序分析,对钻夹头的强度性能进行了分析和仿真;模拟钻夹头实际生成过程中的性能测试试验,探讨加工误差引起的不同装配角度等参数对钻夹头强度性能的影响。

Furthermore, parameter optimization design of the compensation system was carried through based on thermal and electromagnetic force analysis.

在磁场力、热分析的基础上对补偿系统进行参数优化设计,得到各个参数对磁场力的影响,建立了在一定约束限制下,以电磁力为目标的参数可视优化设计的数学模型。

After the pertinence analysis of endoplasm parameters, designed an artificial neural network which built the training sample with grape images information and pericarpial pigment parameters and another artificial neural network which built the training samples with pericarpial pigment parameters and total acid, total sugar, soluble solids of sarcocarp. Using this combined module, realized the nondestructive measurement according to grape images information.

通过对内质参数的相关性分析,设计了由葡萄图像信息预测色素内质参数的人工神经网络及由果皮色素参数预测果肉总酸、总糖、可溶性固形物的人工神经网络模型,通过两个模型组合来实现根据葡萄图像信息进行采前无损检测的目的。

the electrode system is one of the most sensitive and crucial parts in eit system.in this paper a method for eit electrode structure and parameter optimizing design,taking example for compound electrode,has been presented,which is based on the coercive equipotential node model of the line electrode.an imitation research plat-form of electrode structure and parameter optimizing design has been developed.by the methods,the variety influ-ences of electrode structure and parameters on reconstructed image and measurement sensitivity can be obtained.this will provide theory basis for the electrode construction optimizing design of real eit system.

eit电极系统是整个eit系统最为敏感和关键的部分之一。本文在线电极强制等势点模型的基础上,以复合电极为例,提出了一种电极结构及参数优化设计方法,并建立了电极结构参数优化设计仿真研究平台。可针对不同电极结构和各种参数变化给出其对eit成像质量和检测灵敏度的影响,进行优化设计,从而为实用化eit系统电极结构设计提供理论依据。

In this paper,results of Markov chain are used under the circumstances of the automaton model which belongs to logical level of Discrete Event System to analyze the steady states and transient states of the Markov model of DES,respectively based on four conditions of discrete-time parameter and continuous-time parameter.A simpler decision rule of system ergodic property which applies both to the conditions of discrete-time parameter and continuous-time parameter is presented through an example.The transient states of DES which under the condition of continuous-time parameter are analyzed and computed based on Kolmogorov backward equation or forward equation.

利用马尔科夫链的结果,在离散事件系统逻辑层次的自动机模型基础上,对DES的Markov模型的稳态和暂态特性,分别从时间参数连续和离散的情况下,分四个情况进行了分析,通过实例对系统遍历性提出了一条更简单的且在连续和离散时间参数情况下都通用的判定规则,并利用Kolmogorov向后或向前方程,对连续时间参数DES的暂态特性进行了分析和计算。

The major results are summarized as follows: When there is initial error only or model parameter error only in the Lorenz system, the error growth and predictability limit are comparable between two kinds of error problems. This result holds basically for the wide range of parameter space of Lorenz system.

结果表明:在初始误差和参数误差单独存在时,系统的可预报期限随误差大小的变化规律基本上相同;对于相同的误差大小,初始误差和参数误差对系统可预报期限的影响几乎相同,这一结果基本上不随参数范围的变化而变化。

The model and parameter accuracy are essential for excitation system modelling and parameter idenfication, and the criteria of testing the vadlity is given too.

模型和参数的精度是发电机励磁系统建模和参数辨识的关键,本文提出评判基于现场测试得出的数学模型和参数正确性的方法。

In accordance with the actual project, this paper fully considers the comprehensive factors of speaker recognition system on the basis of explaining speaker recognition's principle, such as recognition rate, recognition speed, system stability etc. LPCC is used as the feature parameter. LPCC can reflect the esthesia feature of human in pronunciation and has offered a group of succinct speech signal model parameters which signify the range of frequency spectrum of the speech signal more accurately and the operation amount is not comparatively big. Combined vector quantization technology, the speech searched system has been developed.

本文依拖实际项目,在阐述说话人识别原理的基础上,充分考虑说话人识别系统的识别率、识别速度、稳定性等综合因素,采用能够反映人对语音的感知特性的线性预测倒谱系数LPCC 作为特征参数,LPCC 的重要性还在于,它提供了一组简洁的语音信号模型参数,这一组参数较精确地表征了语音信号的频谱幅度,而分析它们所需的运算量相对来讲却不大;同时结合矢量量化技术,成功开发出语音检索系统。

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With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务,乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐,因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。

Closes the eye, the deep breathing, all no longer are the dreams as if......

关闭眼睛,深呼吸,一切不再是梦想,犹如。。。。。。