查询词典 converter

The renovation of converter trunnion ring in GISE has saved the expense of spare parts.

此处的承运票价在开始承运之前可能会有更改。

This paper describes the screwdown auto-control system of a pilger seamless tube mill which is composed of screwdown motor, frequency converter, PLC and absolute encoder.

本文介绍了由压下电动机、变频器、 PLC 和绝对值编码器构成的周期轧管机的压下自动控制系统。

So the smaller turns ratio of the flyback transformer in the forward-flyback hybrid bi-directional DC-DC converter helps to transfer power with higher efficiency.

文章研究了采用不同的正激、反激变压器匝比对传输功率的分配比例、电流纹波等影响，并进行了试验验证。

Compared with the previous circuit, the current of the main switch is decreased and the converter losses are reduced because of the soft-switch; adjusting the turns ratio of the auxiliary winding can decrease the voltage of the rectifier.

应用于推挽正激电路[6，7]的软开关电路拓扑通常是考虑在其整流桥之后增加一个辅助谐振网络，利用谐振电容上的电压来封锁整流桥，从而达到零电流关断主管的目的。

The operation condition of a series-resonant converter is equivalently analyzed under open-loop condition. OCC condition and selection basis of resonant parameter and switching frequency are determined. The relationships between LED number, transformer turns ratio and constant current error are also determined, which provide scientific basis for the selection of LED number and transformer turns ratio.

文中通过对串联谐振变换器开环工作状态的等效分析，确定开环恒流条件和谐振参数与开关频率的选择依据，以及LED数目、变压器变比与恒流误差之间的关系，为LED数目及变压器变比的优化选择奠定了理论基础。

An internal two-bit digital to analog converter provides programmability of the output currents.

一个内部2位数字到模拟转换器提供的输出电流的可编程性。

A multi-resonant DC/DC converter, which is very fit for ultra-high frequency applications is analyzed.

分析了一种非常适合工作在超高频下的多谐振DC/DC变换器。

The paper introduces an underfeed winder control system mainly composed of Siemens S7-400 PLC, TP270 hand touch screen, 6SE70 AC converter. It successfully implements all AC drive control for the underfeed winder.

摘 要：介绍了由西门子S7-400 PLC、TP270触摸屏、6SE70变频器组成的下引纸复卷机的控制系统，通过公共直流母线系统和基于PROFIBUS-DP总线的分级控制的应用，实现了下引纸复卷机的全交流传动控制。

Unfortunately, there is inevitably difference in characteristics of the induction motors and converters in a parallel AC drive system, therefore each induction motor as well as converter can not operate at the same working point, some may be overload, some underload.

并联着的各个交流调速系统的负载是不均衡的，这是因为逆变器所带的负载—异步电动机参数及特性不可避免地存在差异，两或多台逆变器作为电源，其等效参数也很难一致，各驱动轮径总存在偏差，因此各台逆变器的输出电流和各台异步电动机的定子电流是不相一致的，有的逆变器、异步电动机可能过载，有的还可能欠载。

Simulation and test results show that the proposed converter can reduce output voltage and implement unit power factor correction, and its dynamic performance is satisfactory.

仿真分析和实验结果均表明，该变换器的输出电压大大降低，可实现单位功率因数校正，具有良好的动态性能。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。