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Abstract: The paper presents the study on problems of self-excitation，over-voltage，frequency and voltage stability，organizational measures and arrangement in the course of black start and restoration of the system.Through simulation of black start on East
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文摘:研究电力系统黑启动的过程及恢复中存在的自励磁、过电压、频率和电压稳定、组织措施及安排等问题，并通过华东系统黑启动仿真对上述问题进行分析和解决，证明制定严格的黑启动计划不仅可以迅速恢复系统、降低事故损失，而且对处理紧急状态或地区性解裂有重要意义。 |
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Abstract: The paper probed the analysis on the adding mode of perpendicular load in multistorey building structures,the bending moment of frame side beams and the top,the bending moment of secondary beams,the difference between the tie-beam,plane-frame an
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文摘:讨论了在多项高层建筑结构分析中垂直荷载加载模式的选择，框架边梁和次梁端部的弯矩计算，连梁问题和平面框架分析与空间分析在传力路径上的差别以及单片剪力墙平面外弯矩等问题，可供同类结构内力分析时参考. |
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Abstract: The paper proposes the notion of the complete configuration of unidirectional actuator system to evaluate the control capability of the actuator system and ascribe it to the existence of positive solutions of linear equations.Several characteris
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文摘:提出了配置完整性的概念，用来表征单向执行器系统控制作用的生成能力.并且将配置完整性归结为线性方程组正解的存在性问题,给出了配置矩阵完整性的若干性质和判别条件及其相应的判别步骤. |
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Abstract: The paper rearches into the compactibility and the dilatability of the crushed material of the clayrock in the northwest area of China.
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文摘:以西北某粘土岩的粉碎材料为研究对象，对粉碎土料进行了压实性和膨胀性的研究。 |
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Abstract: The paper recommends a new omni-directional mechanism，which can cross obstacles in its routine.
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文摘:对一种具有越障功能的轮式全方位移动机构——车轮组机构进行了研究，详细论述了机构的组成和设计要求。 |
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Abstract: The paper say the principle and method of standard quantum insertion method used in the precision turn control of the machine arm, issue the method correctness and capability, and give the structure of standard quantum generator and interface me
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文摘:本文叙述了标准量插入法应用于机械臂精密转动控制的原理和方法，探讨了该方法在实现上的技术可行性，给出角度标准量发生器的结构和定位信号的接口方法。 |
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Abstract: The paper shows the application of Lenze EVS9300-EP AC servoposition controller to specified length shearing.
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文摘:介绍了伦茨EVS9300-EP交流伺服位置系统在带材定尺剪切控制中的应用。 |
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Abstract: The paper shows the relative deformation function of the cam mechanism with a roller follower as a linear time-invariant system,and gives the detail about the response limitation for the dynamic design and modification of cam mechanisms.An examp
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文摘:以滚子从动件平面凸轮机构为分析对象，提出了相对变形函数这一新概念，并从理论上对其进行了研究，最后借助于一凸轮机构在不同参数下其摆臂最大相对变形量的数值计算过程与结果，阐述了基于该理论的凸轮机构动态设计与修改的具体实现步骤与方法。 |
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Abstract: The paper studies the important technique and index in application scope， equipment configuration， operating duty， energy consumption， irrigation application efficiency and economic benefit of pipe-sprinkler combined irrigation, and presents the
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文摘:针对管喷结合灌水技术的应用范围、设备配置、运行方式、能耗、灌溉水利用系数以及效益等关键技术及指标进行了探讨，并提出了低压管道和多孔式微喷带结合系统的使用方法。 |
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Abstract: The paper studies the solutions of seamless coverage of 3G wireless networks, including indoor coverage, typical coverage applications of urban and rural area.
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摘要：本文分析研究了3G无线网无缝覆盖的主要解决方案和技术手段，内容涉及室内覆盖、城区中各类典型区域以及农村地区的覆盖解决方案。 |
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Abstract: The paper suggests two methods for adjusting the mesh clearance in cylindrical worm drive:one is to adjust the meshing center distance of worm gears,the other is to use dual lead cylindrical worm, introducing briefly the principle of adjustment
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文摘:提出了两种调整圆柱蜗杆传动啮合侧隙的方法:通过改变蜗轮蜗杆的啮合中心距来改变其啮合侧隙;采用双导程蜗杆传动以调整蜗轮蜗杆的啮合侧隙,简述了调整原理,并比较了两种调整方法各自的特点。 |
