查询词典 synchronous

According to all of Synchronous Digital Block diagram of the frequency measurement using VHDL,the successful preparation of the design process,and in MAX+PLUS II software environment,the preparation of procedures for VHDL simulation,obtained very good results.

根据全同步数字频率计的测频原理方框图，采用VHDL语言，成功编写出了设计程序，并在MAX+PLUSⅡ软件环境中，对编写的VHDL程序进了仿真，得到了很好的效果。

Firstly, the background and the significant of the research is discussed, modern software engineering and its development is also outlined, and the present states and the reason of using the modern software engineering in power systems are also analyzed. Secondly, related theories and methods of the modern software engineering are systematically given in details, which establish the basis of the software development with the software engineering in power systems. Thirdly, the necessity of the developed power system software with the software engineering is analyzed deeply and the key techniques in carrying out the software development with the software engineering are discussed. Based on these, a concrete approach about the software development with the software engineering is proposed. And then, the software design process of 'GPS synchronous monitoring system of Hunan power grid'is given to demonstrate the utilization of the approach proposed. Subsequently, quality and efficiency of the software is analyzed, which indicates the validity of the method used. At last, the main work and fruitage of the thesis is concluded, and the further research is also pointed out.

论文首先论述了课题研究的背景和意义，概述了现代软件工程及其发展，分析了现代软件工程在电力系统中的应用现状及其原因；然后系统地阐述了现代软件工程的相关理论和方法，奠定了电力系统软件工程化开发的理论基础；接着分析了电力系统软件工程化开发的必要性，探讨了实施工程化开发涉及到的关键技术，结合现代软件工程的理论和方法，提出了一种电力系统软件工程化开发的具体方法；之后以湖南电力系统状态GPS 同步监测系统软件的开发为例，详细地阐述了该工程化方法在电力系统软件开发中的具体实践过程，并分析了软件开发的结果，指出了该方法是解决软件开发质量和效率问题的有效途径；论文最后对主要工作和成果进行了总结，并指出了有待进一步开展的工作。

The thesis focuses on the circuit design and parameter selection, including the power circuit, control circuit and drive circuit of the front-end converter. Apart from that, for the load-end converter, the design and critical components selection of the traditional full-wave rectification and synchronous rectification are presented.

本文设计和确定电路的各种参数，包括前端变换器的功率电路、控制电路和驱动电路，对于负载变换器则给出了普通全波整流和同步整流的滤波器设计和一些关键器件的选择。

Chapter 5 deals with some variables's basic relations of synchronous /full-wave rectifier/LCR circuit, the effects of parameters on output voltage ripple and dynamic characteristics are presented.

第五章着重分析了凸极同步发电机一桥式整流—LCR电路的一些基本运行规律。研究了影响输出直流电压脉动和动态特性的主要因素，以及滤波参数、电机饱和、阻尼绕组对特性的影响。

To fund a more precise simulation model is the important fundament of the study on the PM synchronous motor.

在永磁同步电机众多的研究方向中，建立较精确的仿真模型，是一项很重要的基础研究。

A lot of experiments reveal that the fundamental period synchronous analysis method of quasi-periodic signal is reasonable and feasible for the practical engineering applications.

实验证明，本文提出的准周期信号基频同步分析方法，是实际工程应用中行之有效的方法之一。

In the thesis, an advanced synchronous detecting method is proposed, which replaces the phase voltage by fundamental positive sequence voltage.

本文通过对传统同步检测算法的改进，提出利用PARK变换提取三相基波正序电压来代替相电压，弥补传统算法的不足。

The driving consists of synchronous belt, gearwheel device and universal shafts with high driving efficiency and low consumption.

同步带、齿轮箱万向轴联轴器相结合传动型式，传动效率高，构件损耗低。

Driving system consists of gearwheel device, universal couplings and arc gear synchronous belt.

传动系统采用齿轮箱、万向轴联轴器、圆弧齿同步带相结合。

The navigation constellation composed of eight inclined globosity synchronous orbit satellites is designed.

设计了由八颗倾斜圆轨道地球同步卫星组成的导航星座。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失