A compliant microgripper numerical example is simulated to show that reliability-based topology optimization yields mechanisms that are more reliable than those produced by deterministic topology optimization and also certificate the validity of the proposed method.

最后以柔順微夾鉗的可靠性拓撲優(yōu)化為例超碰免费在线站长工具，說明本文所提方法的正確性和有效性，研究結(jié)果表明基于可靠性拓撲優(yōu)化所得機構(gòu)比確定性拓撲優(yōu)化所得機構(gòu)更合理只久久久久久久久久久。

The concept of topology optimization of truss structures with discrete variables including two kinds of variables and the relative difference quotient algorithm for discrete optimization are extended to the topology optimization of plate and shell structures composed by plate and shell elements.

將包含兩類變量的桁架結(jié)構(gòu)拓撲優(yōu)化設計的概念及求解離散優(yōu)化的相對差商法進一步推廣到由板殼單元組成的板殼結(jié)構(gòu)的拓撲優(yōu)化国产特黄特色视频网站，建立了包含兩類變量的板殼結(jié)構(gòu)拓撲優(yōu)化設計模型，并采用相對差商算法進行求解日韩系列精品自拍视频在线观看。

Topology is traditionally decomposed into three parts: General topology, Algebraic topology and Differential topology.

習慣上拓撲學被分成點集拓撲午夜在线色呦呦、代數(shù)拓撲和微分拓撲三部分。

Based on theanalysis of topology structure of parallel mechanisms and using differential topology anddifferential manifolds as mathematical tools, we propose a new classification method. Thismethod classifies singularities of parallel mechanisms into two basic types, i.e. topologysingularity and parameterization singularity. This kind of classification has clear physical andmathematical meaning and fully reveals the characteristic of configuration space of parallelmechanisms.

采用微分拓撲和微分流形等現(xiàn)代數(shù)學工具欧美熟女性爱图，在對并聯(lián)機構(gòu)位形空間的拓撲結(jié)構(gòu)進行分析的基礎上亚洲网站黄色，提出了一種新的奇異位形的分類方法，即把奇異位形分為拓撲奇異位形欧美一区二区91、參數(shù)化奇異位形兩種類型亚洲欧美人成人综合在线播放，這種分類方法充分體現(xiàn)了并聯(lián)機構(gòu)位形空間的特點亚洲一级毛片免费看，具有十分明確的物理和數(shù)學意義。

It′s topological properties are studied,three equivalent conditions of which topological space is discrete space and one equivalent condition of which topological space is mediocre space are abtained.

以離散參數(shù)馬爾可夫鏈狀態(tài)空間E為集合定義該集合上的一個拓撲T久久停黄色网站，研究它的拓撲性質(zhì)国产精品一级黄录像，得到拓撲空間是離散空間的三個等價刻畫以及是平庸空間的一個等價刻畫。

The computation implies that the influence of truncation error of up/downwards continuation is about 0.001 m2·s-2, the maximum error is only 0.11 m2·s-2, which can be ignored in CHAMP gravity field recovery. The influence of the reference gravity field error of up/downwards continuation is less than 0.1 m2·s-2 in general, but the maximum error can reach 1.3 m2·s-2. To reduce this error, a high-precision gravity field model should be used in the up/downwards continuation.

計算表明：延拓誤差中的截斷誤差部分影響量級約0.001 m2·s-2国产丝袜视频在线播放一区，最大誤差僅為0.11 m2·s-2小黄片在线播放情侣，可完全忽略；延拓誤差中的參考重力場模型誤差影響隨參考場選取的不同而有所差異黄片zaixian免费，整體而言小于0.1 m2·s-2www.欧美亚洲精品，但最大誤差可達1.3 m2·s-2，采用高精度的參考重力場模型能大大減小延拓誤差影響最黄网站视频在线播放。

The first part of this article introduce the characteristics of the tourism plan research, extension theory outline, as well as this research's significance and the technical route.The second part first introduce the basic concept of the extension tourism plan, then introduce the basic thought, the elementary theory and the essential method of the extension tourism plan.

第一部分介紹旅游規(guī)劃研究特點亚洲√a无码作爱，可拓學理論概述，以及本研究的意義和技術(shù)路線第二部分首先介紹可拓旅游規(guī)劃的基本概念先锋影音最新av资源网址，再介紹可拓旅游規(guī)劃的基本思想国产青榴视频A片在线观看不卡成、基本理論和基本方法。

This method combined the traceroute result with the topology information obtained by tomography to construct a final topology using minimum similarity cluster algorithm and merging and constructing anonymous routers algorithm.the simulation on ns2 shows that this method not only be able to infer the network topology which contains uncooperative routers, but also enormously reduce the number of probes.

該方法可通過提出的最小相似度聚類算法和匿名節(jié)點構(gòu)造歸并算法亚洲性爱视频网址，將網(wǎng)絡層析成像獲得的拓撲信息與traceroute探測結(jié)果融合欧美刺激a片影院，構(gòu)成最終的拓撲結(jié)構(gòu)。ns2的仿真表明26uuu欧美日韩国产，該方法不僅可識別包含不協(xié)作節(jié)點的網(wǎng)絡拓撲A级黄色片在线免费观看，且所使用的探測包的數(shù)量也大大減少。

The article makes a comparison among different types of bus, bus transmission signal and several familiar topologies of front-end converters and load-end converters. Finally, the half bridge converter with full-wave rectifier based on the high-frequency parallel-type AC bus bar is chosen as circuit structure and optimized. The working mode under different condition of the circuit is analyzed and a mathematical model is set up under continuous current mode. Simulation result is used as comparison.

通過對比不同類型的母線国产综合亚洲欧美日韩一区、母線傳輸信號以及各種常見的前端變換器拓撲和負載變換器拓撲美女裸体扒开尿口桶到爽动态图，確定了基于并聯(lián)型高頻交流母線的半橋變換器加全波整流作為電路拓撲，并優(yōu)化了電路的結(jié)構(gòu)999国产在线视频，分析了基于不同工作狀態(tài)下的電路結(jié)構(gòu)并建立電流連續(xù)模式的數(shù)學模型久久riAV一区二区三区，并與軟件仿真結(jié)果進行對比。

A new universal hybrid topology is brought forward. Two types multilevel inverter: equal DC voltage and DC voltage in geometric proportion is studied, besides this, simulation and experiments on SVPWM applied on cascaded H-bridge inverter is also studied.

提出了多電平逆變器的一種通用組合拓撲結(jié)構(gòu)玖玖草视频，針對這種拓撲結(jié)構(gòu)重點99re在线观看这里只有精品9，研究了直流側(cè)電壓相同及等比變化的兩類級聯(lián)拓撲以及級聯(lián)H橋逆變器的矢量控制方法；并對級聯(lián)H橋逆變器的矢量控制方法做了實驗研究老熟女国产91。