共查询到20条相似文献,搜索用时 15 毫秒
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基于Solidworks的叶片参数化设计系统开发 总被引:8,自引:2,他引:8
对利用VB、Micmsoft Access进行基于Solidworks的应用程序二次开发进行了研究,提出了基于Solidworks的叶片参数化设计系统开发的总体框架和实现方法,实现了叶片的参数化建模,缩短了叶片的设计开发周期,提高了设计效率和质量。文中给出了系统的体系结构和部分实现代码。本文提出的方法对开发复杂产品的参数化设计系统具有参考价值。 相似文献
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根据国家标准———摆锤式冲击试验机的检验,针对摆锤需满足的设计要求,建立摆锤的优化设计数学模型,满足冲击试验时的能量、打击速度以及打击点位置等要求。对摆锤的设计具有理论指导意义。 相似文献
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对脉冲信号法识别元件或系统的数学模型的理论和实践进行了探讨,以QDY电液伺服阀为研究对象设计了试验台和试验方法、编制了计算机拟合程序并取得了成功。同时,将该法与传统的正弦信号法进行了性能比较,进而指出了脉冲信号法的应用前景。 相似文献
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汽油发动机数学模型建立与仿真研究 总被引:1,自引:0,他引:1
分析了汽油发动机的控制原理和基本特征,系统研究了发动机喷油原理和点火提前角控制原理.建立了燃油蒸发与燃油膜子模型、进气歧管空气流量子模型和发动机动力输出子模型.通过仿真验证,表明该数学模型在提高汽油燃烧率,节约燃油,和功率输出稳定性方面都有较满意的表现. 相似文献
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Filippo Attivissimo Francesco Adamo Alessio Carullo Anna Maria Lucia Lanzolla Filippo Spertino Alberto Vallan 《Measurement》2013
The purpose of this work is twofold: first to investigate the accuracy of Photo-Voltaic (PV) modeling under non-standard test conditions (STCs), and then to estimate the inaccuracies on maximum power prediction for different PV technologies; this is achieved through the comparison between predicted and measured data under a variety of operating conditions. The developed technique is based on the identification of the modules parameters of the double-diode equivalent circuit. The model has been validated by experimental data taken on five different ∼2 kWp plants of the PV LABoratory (PV-LAB), with different interconnection schemes, and it predicts the power production for mono and poly crystalline Silicon (m-Si and p-Si) plants, while the prediction for CIGS and CdTe PV plants appears less accurate. Results of this comparison are then used to analyze the impact of prediction inaccuracy under real operating conditions. 相似文献
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基于回归分析的疏浚工艺数学模型研究 总被引:1,自引:0,他引:1
在总结影响绞吸式挖泥船产量的调控参量的基础上,通过分析绞吸式挖泥船施工现场实时采集的大量数据,对多个调控参量进行筛选,减少调控参量,降低挖泥船操作的复杂度,并基于回归分析,建立疏浚工艺数学模型,该模型能够对产量进行有效的预测,为产量的优化打下理论基础. 相似文献
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In the present paper, experimental and numerical investigations of the flow around different types and sizes of anemometers are presented and discussed.The measurements of the flow field at different distances upstream of the anemometer are performed with a laser Doppler Anemometer. The computational results are in good agreement with the experimental ones since the observed deviations are of the same order of magnitude. These results show that anemometers may induce a strong distortion of the velocity field, even far upstream of the anemometer. This distortion has to be taken into account in the anemometer calibration field to yield reliable and consistent measurements. 相似文献
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《Measurement》2016
The development of an experimental mathematical model describing temperature state of the sample during high temperature spectral emissivity measurement is introduced. Dimensional analysis of the measurement process gives the physical dimensionless quantities and sensitivity analysis of the measurement process provides the large set of performed model experiments. Evaluated experimental mathematical models are presented including their accordance with model experiments. Established equations are generalization of sensitivity analysis of high temperature spectral emissivity measurement method and can be used for computation of spectral emissivity total uncertainty. 相似文献
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王宏明 《中国制造业信息化》2000,29(4):15-16
:针对起重运输机械等行业进口主机所用标准的不同 ,提出了为其配置盘式制动器的主体结构优化。根据使用时的一般状况 ,分析了制动器工作时的力学和热力学特性 ,建立了以制动时间和外形尺寸最小为目标的结构优化数学模型 ,并对结构优化的软件设计进行了简单描述 相似文献
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给出了一种基于图像灰度分布统计特征期望值为阈值的二值化方法.并在此基础上运用数学形态学方法进行图像目标定位分割。应用于有噪声的车牌图像二值化和分割、实验表明本文提出的二值化算法的计算复杂度.执行时间、二值化效果以及适用范围等方面均有较佳表现.形态学分割算法定位效果好、分割精度高。 相似文献