摘要：介绍了可控串补 (TCSC)模拟试验研究中控制器的设计及软、硬件结构。控制器的设计以工业现场条件为依据 ,暂态网络分析 (TNA)模拟试验研究结果表明 ,该控制器达到了设计要求 。

摘要：主体间性网络课程是以计算机网络为载体,基于主体间性哲学思想和科学的教学理论和学习理论,并在汲取现代课程理论核心思想的基础上所形成的彰显教师、学生、文本和技术等多元主体间互为交往特质的新型课程形态。主体间性网络课程的构建路径主要包括网络课程的追寻目标设定、呈现方式设计、课程实施和评价等几个层面。

摘要：岔管体型对抽水蓄能电站水头损失影响较大,间接影响到电站的运行效益,岔管体型优化是当前研究的一个热点问题。为减小岔管的水头损失,本文在传统岔管设计基础上,提出一种新的岔管导流板设计方法。采用突缩管验证了数值模拟的准确性,通过数值模拟比较了有无导流板的岔管的流速分布,对岔管导流板的体型进行了优化。结果表明:岔管导流板能够减小电站运行时岔管段产生的水头损失,使管内水流流态更加平稳,抽水工况岔管的水头损失可减小43.4%,发电工况水头损失减小12.6%,能有效地改善电站运行效益。

摘要：设计了一种基于1.5μm BiCMOS工艺下的脉宽调制信号移相电路。该电路可应用于发光二极管驱动芯片中,对调光脉宽调制信号进行移相。电路设计有三种模式以应用在不同的场合,可进行零度、180°和任意度的移相。测试结果表明:在100 Hz到20 kHz脉宽调制信号下,电路的三种模式都能保证信号的精度与移相的稳定。

摘要：为研究水平和竖向(双向)耦合地震作用下液化场地群桩基础的动力响应,设计了可液化地基-群桩基础-框筒结构动力相互作用体系振动台模型试验。选取不同类型模拟地震波作为振动台试验激励,通过对比水平地震作用和双向耦合地震作用下土体加速度、超孔隙水压力和群桩应变等试验结果,进而分析双向耦合地震作用对可液化地基和群桩基础动力响应的影响。研究结果表明:双向耦合地震作用下,液化场地土体竖向加速度峰值随土体埋深高度的减小而逐渐增大;饱和砂土的液化效应与双向耦合地震作用和输入地震波的类型有关;相比水平地震作用,不同种类波双向耦合地震作用下群桩基础桩身中部和底部的应变峰值增大,桩顶应变峰值变化略有不同;双向耦合地震作用加剧了建筑结构群桩体系的摇摆和倾斜。研究结果对可液化地基上群桩基础的抗震设计和防灾减灾具有十分重要的研究意义。

摘要：This paper uses CT to gain the energy directly from the high-voltage transmission line, to address the problem of power supply for monitoring system in high voltage side of transmission line. The draw-out power coil can induce voltage from the transmission line, using single-chip microcomputer to analog and output PMW wave to control the charging module, provides a stable 3.4 V DC voltage to the load, and solve the problem of easy saturating of core. The power supply based on this kind of draw-out power coil has undergone the overall testing, and it is verified-showing that it can properly work in a non-saturated status within the current range of 50 - 1000 A, and provide a stable output. The equipment also design protection circuit to improve the reliability to avid the impacts of the impulse current or short-circuit current. It effectively solves the problem of power supply for On-line Monitoring System of Transmission.

摘要：以氢化锆粉与碳化硼粉为原料，用橡胶模成型方法成型，真空烧结炉中脱氢；在800～1100℃下保温1h，制得碳化硼锆合金可燃毒物中空芯块烧结体；用浸渍法测量芯块的致密度和开孔率，研究烧结温度和碳化硼含量对烧结体致密度的影响；用扫描电镜分析坯体与烧结体的微观结构。结果表明，碳化硼锆合金烧结体的致密度随烧结温度的升高而增加，随碳化硼含量的增加而降低，碳化硼颗粒在锆合金中分布比较均匀，当碳化硼质量分数为O．5％，烧结温度在1000℃以上时，烧结体致密度达到95％以上，开孔率低于1％。

摘要：针对应急装备制造过程的高波动性、高时效性特点,建立了多层制造服务网络模型,并提出基于排队理论的制造网络节点动态资源配置策略,以保证制造资源的合理使用与客户放弃概率的稳定可控。基于不同的制造网络服务目标水平,分别提出了制造网络节点资源动态调节的近似算法和数值解法。通过数值算例的仿真分析,验证了该方法可有效控制并稳定制造系统的目标性能,其针对各制造节点的资源的动态协同优化方案与仿真结果高度契合。所提出方法可应用于应急装备制造服务网络设计中,并为具有更为复杂结构的制造服务网络节点资源配置提供依据。

摘要：基于ANSYS Workbench平台,以某数控立式车床回转工作台为研究对象,利用拓扑优化和尺寸优化设计方法,对其进行了以减轻质量和提高结构刚度为目标的结构优化设计研究。分析结果表明:与原设计方案相比较,优化改进后的回转工作台质量减少了24.97%,最大变形量减小了39.8%,而且一阶固有频率也由399.9 Hz提高到474.9 Hz。

摘要：Coptis chinensis(Huanglian) is a commonly used traditional Chinese medicine(TCM) herb and alkaloids are the most important chemical constituents in it. In the present study, an isocratic reverse phase high performance liquid chromatography(RP-HPLC) method allowing the separation of six alkaloids in Huanglian was for the first time developed under the quality by design(Qb D) principles. First, five chromatographic parameters were identified to construct a Plackett-Burman experimental design. The critical resolution, analysis time, and peak width were responses modeled by multivariate linear regression. The results showed that the percentage of acetonitrile, concentration of sodium dodecyl sulfate, and concentration of potassium phosphate monobasic were statistically significant parameters(P < 0.05). Then, the Box-Behnken experimental design was applied to further evaluate the interactions between the three parameters on selected responses. Full quadratic models were built and used to establish the analytical design space. Moreover, the reliability of design space was estimated by the Bayesian posterior predictive distribution. The optimal separation was predicted at 40% acetonitrile, 1.7 g·m L-1of sodium dodecyl sulfate and 0.03 mol·m L-1 of potassium phosphate monobasic. Finally, the accuracy profile methodology was used to validate the established HPLC method. The results demonstrated that the Qb D concept could be efficiently used to develop a robust RP-HPLC analytical method for Huanglian.