查询词典 topology structure

Power factor correction;topology;control;active power factor correction;zero current switching;boost;average current type

论文导师杜少武，论文学位硕士，论文专业电力电子与电力传动论文单位合肥工业大学，点击次数 14，论文页数 50页File Size2394K

A zero rippled input current and continuous output current Buck-Boost converter topology converter was proposed.

针对传统Buck-Boost输入输出电流断续的缺点，提出一种基于独立电感零纹波输入电流和输出电流连续的Buck-Boost变换器，详细分析了变换器的稳态工作原理。

To guarantee the simulation results correction and speedup the simulation, the scheme for efficient PAPSoCS is proposed and the virtual topology star is constructed to match the path of messae passing for solving algorithm-architecture adequation problem.

为保证仿真结果的正确和提高仿真速率，所提出的连续系统的高效的部分异步并行仿真方案和适应消息传递的星型虚拟拓扑结构方案可有效地解决连续系统仿真的&算法-结构匹配问题&。

The changing rocks are the embodiment of Lou Quanmu's art:seemingly carefree but intrinsically restrained. In a statement Lou said:"Mountain rocks possess forms that are both abstract and figurative, their shapes are paralleled to our mental topology, and their apertured, coarse textures are like our nerves."

罗荃木对山石的想法表现了对艺术的追求，作品既自由又抑郁，即同其述：「山石是介于抽象和具象之间的形象，可以按照内心的感觉自由行走，在任何地方多一点或少一点，不被形所限制，山石的型态有点像心灵的地图，布满奇怪的洞穴，它的肌里几乎是神经质的」。

The changing rocks are the embodiment of Luo Quanmu's art:seemingly carefree but intrinsically restrained. In a statement Luo said:"Mountain rocks possess forms that are both abstract and figurative, their shapes are paralleled to our mental topology, and their apertured, coarse textures are like our nerves."

罗荃木对山石的想法表现了对艺术的追求，作品既自由又抑郁，即同其述：「山石是介于抽象和具象之间的形象，可以按照内心的感觉自由行走，在任何地方多一点或少一点，不被形所限制，山石的型态有点像心灵的地图，布满奇怪的洞穴，它的肌里几乎是神经质的」。

Continuum topology optimization method for arch axis design of arciform aqueducts;2. The effects of deformation and internal forces produced by transverse bias of arch axis are analyzed by simulative computing.

针对某上承式钢筋砼箱板拱桥建成后的拱轴线与设计拱轴线发生横桥向偏离，通过计算仿真分析探讨拱轴线偏离对主拱内力和变形的影响，提出了几种改善主拱受力状态的措施，为同类拱桥的施工偏差和加固维修提供借鉴。

Based on bridgeless PFC topology,a 1 500 W prototype has been designed.The control chips use L4981 and IR1150 based on average current control and one-cycle control technology.

实验基于无桥Boost PFC拓扑，控制电路分别采用&平均电流控制&技术的芯片L4981和&单周期控制&技术的芯片IR1150，研制出一台1500W的实验样机，并对两种控制电路进行了详细的对比分析。

And some knowledge of grid topology is also introduced. The nucleation of condensative steam in the whole flowing field has been displayed. Furthermore, the characteristic of two-phase complex flow is analyzed. In the stationary blade's passage, the flowing status is stable relatively. The steam expanding is comparatively relaxing and the nucleation area of steam is small. In the moving blade's passage, the expanding of steam is tempestuous relatively because of dual-velocity effect; the degree of condensation of steam is considerably distinct.

最后，对有凝结的蒸汽在三维叶栅中的流动进行了模拟，得到了蒸汽凝结流动在整个流道内的流动情况，分析了这种两相复杂流动的特点，在静叶内，流动状态基本稳定，蒸汽膨胀较为缓和，发生凝结的区域很小；在动叶内，由于双重速度的作用使得蒸汽膨胀较为剧烈，相对蒸汽凝结程度比较大。

According to the topology and joint relation between two bodies of artillery system, the degrees of freedom of artillery and the forces applied on recoil and counterrecoil mechanisms are analyzed.

最后提出用虚拟样机技术对火炮进行故障评估和寿命预测构想，为装备质量评估提供了一条新的途径，并对虚拟样机在未来的应用前景进行了展望。

The core thought of dendriform topology discovery algorithm is the brother-node guess algorithm, which can obtain the address space scanning by other means.

树状拓扑结构发现算法的核心思想是最小增量发现算法兄弟节点猜测算法，其优点在于采用了非地址空间扫描的手段却达到了地址空间扫描的效果。

I was up all night because I was in pain, she said.

我整夜，因为我在疼痛，她说。

A crow caws /craoks.

乌鸦叫。 51-论文网