拓扑变换

词组短语

topological transformation

与拓扑变换相关的网络例句 [注：此内容来源于网络，仅供参考]

The circuit topology of the differential Forward DC-DC converter mode inverter with high frequency link was proposed. Circuit topology, transient voltage control strategy, steady principle characteristic and design criteria for the key circuit parameters were deeply investigated.

提出差动正激直流变换器型高频环节逆变器电路拓扑，并对该变换器的电路拓扑、瞬时电压控制策略、稳态原理特性、关键电路参数设计准则等进行了深入地分析研究。

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.

通过对比不同类型的母线、母线传输信号以及各种常见的前端变换器拓扑和负载变换器拓扑，确定了基于并联型高频交流母线的半桥变换器加全波整流作为电路拓扑，并优化了电路的结构，分析了基于不同工作状态下的电路结构并建立电流连续模式的数学模型，并与软件仿真结果进行对比。

A simple polynomial approach for A Class of nonlinear system modeling is presented. By this, the input-output data are firstly changed into [0, 1] by using topological homeomorphism conversion; then an initial polynomial model is selected. The parameters of polynomial model are estimated by using recursion least squares method. A final polynomial model is obtained by repeatedly estimating parameter and eliminating redundant terms.

给出一类非线性系统的实现简单的多项式逼近的建模方法，在此方法中，将输入输出数据通过拓扑同胚变换，变换到[0，1]区间内，用多项式逼近的方法进行建模，对初始给定的多项式模型，通过反复的参数辨识、去除模型中的冗余项，得到非线性系统的多项式逼近模型，再利用拓扑反变换，将数据还原回原始数据区间。

Firstly, based on the force acting on a single-particle, establish a discriminant formula of the sand threshold, and prove that the sand threshold belongs to the cusp catastrophe. Then establish the basic equation of the cusp catastrophe using coordinate transformation and catastrophe theory. Finally, while particle Reynold number and equivalend diameter are the state variables and Shields parameter is the control variables, we can obtain the model of cusp catastrophe of sand threshold, putting those variables into the basic equations of the cusp catastrophe. The model is derived from the mathematics, which has a certain mathematical theory foundation.

首先从单颗沙粒受力分析出发，建立沙床沙粒起动条件判别公式，进而证明了风沙起动属于尖点型突变；然后通过坐标变换和突变理论建立了尖点突变的基本方程；最后本文选择颗粒雷诺数和等效粒径作为控制变量，希尔兹参数作为状态变量，并把它们代入尖点突变的基本方程，经过拓扑变换得到风沙起动的尖点突变模型，并与前人的公式及实验数据进行比较。

Based on the ICM (independent continuous topological va riables and mapping transformation) method, a unified sm ooth model with weight objective and stress constraints was established for the topology optimization design of continuum structures.

基于独立连续拓扑变量及映射变换的拓扑优化方法应用于连续体结构，建立了统一的以重量为目标、考虑应力约束的连续体结构拓扑优化模型。提出基于综合评价的高效单元删除准则及算法。

The optimal design and topology commutation can been carried out automatically on the various types and scales of humps through using the comer increment method, the method of point intersection of trochoid and topology commutation method.

用转角增量法、限界轨迹线交点判别法及本文提出的咽喉区网络结构图自动拓扑变换方法实现了各种类型、各种规模驼峰头部和调车场尾部平面图的优化设计和自动拓扑变换。

Buck and Boost topology switching power conversion circuits as the core of this system, ultra low power MSP430F1222 microcontroller-based controller, microcontroller produced by the PWM pulse width modulation signals, respectively, two-way control switch voltage conversion circuit the turn-on and turn-off in order to achieve the above two kinds of topology switching power conversion circuit, and then to draw power from the flow of electrical energy has been filled into the rechargeable battery, and using microcontroller A / D input voltage implementation of the monitoring, according to the input voltage switching buck - circuit at a lower cost to achieve a highly efficient energy transfer, and the circuit is simple, the parameter to determine easy, self-low power consumption,to achieve full-featured.

本系统以Buck降压和Boost升压拓扑结构开关电源变换电路为核心，以超低功耗单片机MSP430F1222为主控器，由单片机产生PWM脉宽调制信号，分别控制两路电压变换电路中开关管的导通与关断从而实现以上两种拓扑结构开关电源变换电路，进而从一直流电源中吸取电能充入可充电电池，并利用单片机A/D对输入电压实施监测，根据输入电压切换升降压电路，以较低的成本实现了高效率的电能转移，并且电路简单、参数确定容易，自身功耗低，实现功能完整。

Then it describes the properties of topological transformation in map data processing as well as the realization of so-called indirect topological selection in this cartographical data base system.

然后就地图数据处理的拓扑变换性质以及在该地图数据库系统中称之为&间接拓扑选取&的实现进行了论述。

This thesis discussed the construction method for hybrid cascade asymmetrical multilevel converters,and some novel topologies are presented. Hybrid cascade asymmetrical multilevel converter can be derived by combining AMC and AMC,or combining AMC and SMC.

本文研究了组合式不对称混合级联型多电平变换器拓扑的生成方法，在此基础上提出了几种新型拓扑，重点研究了不对称同构混合级联型多电平变换器和不对称异构混合级联型多电平变换器。

This paper attempts to associate PFC technology with Quasi-Resonant DC/DC Converter and Synchronous Rectifier technology, to work out a novel switching power supply with higher efficiency and low contamination, which both achieved high power factor, improved effecting on electrical network and ensured high efficiency, furthermore, it is easy to be realized and controlled in circuit.

本文首先阐述了开关电源、功率因数校正技术和同步整流技术的发展及现状，对DC/DC变换的拓扑结构进行了选择，确定了带有隔离的准谐振(Quasi-Resonant)反激型电路，可以有效地降低损耗；接着本文对几种常见的PFC拓扑电路进行分析对比，从中选择了BOOST型电路，对工作在临界状况下的电路进行了分析，采用跟随输入电压的升压变换新技术，减小了电感体积，同时降低了开关管的电压应力，既简单又有效地实现了功率因数校正，并发现此技术值得推广；由于反激型变换器的效率一般都较低，所以本文在传统同步整流技术基础上对其加以改进，设计出一种新颖、高效的同步整流方案。

与拓扑变换相关的网络解释 [注：此内容来源于网络，仅供参考]

topological abelian group：拓扑阿贝尔群

拓扑[学]|topology | 拓扑阿贝尔群|topological Abelian group | 拓扑变换群|topological transformation group

topologically equivalent transformation：拓扑等价变换

12230,"topologically equivalent space","拓扑等价空间" | 12231,"topologically equivalent transformation","拓扑等价变换" | 12232,"topologized","既拓扑化"

topological equivalent transformation：拓扑等价变换

topological equivalence 拓扑等价 | topological equivalent transformation 拓扑等价变换 | topological extension 拓扑扩张

topological group：拓扑群

这些傅立叶变换的变种可以被更统一的表述成任意局部紧(locally compact)的阿贝尔(abelian)拓扑群(topological group)上的傅立叶变换,这一问题属于调和分析(harmonic analysis)的范畴; 在调和分析中, 一个变换从一个群变换到它的对偶群(dual group).

data topological homeomorphism transform：数据拓扑同胚变换

可视化拓扑结构图输入:Visible topological structure picture input | 数据拓扑同胚变换:data topological homeomorphism transform | 拓扑相位干涉效应:topological phase interference effects

Visible topological structure picture input：可视化拓扑结构图输入

加权量子拓扑指数:Weighted Quantum Topological Index | 可视化拓扑结构图输入:Visible topological structure picture input | 数据拓扑同胚变换:data topological homeomorphism transform

Topology：拓扑

9、"拓扑"(Topology)一词来源于希腊文,它的原意是"形状的研究". 拓扑学是几何学的一个分支,它研究在拓扑变换下能够保持不变的几何属性--拓扑属性(拓扑属性:一个点在一个弧段的端点,一个点在一个区域的边界上;非拓扑属性:两点之间的距离,

topological transformation group：拓扑变换群

拓扑阿贝尔群|topological Abelian group | 拓扑变换群|topological transformation group | 拓扑不变量|topological invariant

topological winding number：拓扑绕数

拓扑变换 topological transformation | 拓扑绕数 topological winding number | 拓扑学;位相学 topology

topotactic transformation：拓扑变换

拓扑学;位相学 topology | 拓扑变换 topotactic transformation | 顶偶素 topponium