查询词典 converters

It is of great reference value to the control system of the other current converters or traction equipment.

它对其他的变流装置或牵引设备的控制系统同样具有参考价值。

A new parameter "the effective conversion transconductance" is introduced for characterizing transistor converters.

提出新参数"有效变频跨导"来决定晶体管变频器的特性。

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。

In these converters, which were discussed in detail, the average dc output voltage Ud is controllable in magnitude and polarity, but the dc current Id remains unidirectional.

这些变流器前面已经详细地讨论过，其平均输出电压的幅值，极性是可变的，但是直流电流 Id 是单向的。

And also a method of adding an Equivalent DC Voltage Source in the output side of non-isolation converters which can extend the step-up voltage gain is proposed in this thesis.

介绍了耦合电感在不隔离型变换器中的物理意义，采用一种在输出侧增加等效电压源的方法，拓展了不隔离型变换器的升压增益。

Direct digital waveform synthesizer is a digital method that the radar signal is generally generated.The error resource of DDWS is presented.The principle that signal is reconstructed in digital-to-analog converters is analyzed in the DDWS structure.

介绍了直接数字波形合成(direct digital waveform synthesizer，DDWS)的误差来源，分析了DDWS结构中其数模转换器信号重构机理，比较研究了DAC信号重构误差对输出信号脉冲压缩结果的影响。

In recent years, DC-DC converters have been widely used in electrical drive anda lot of else applications.

近年来，DC-DC开关电源在电气驱动等领域得到日益广泛的应用。

This control system includes main control model, current detection, position sensing, fault detection and protection, serial interface. Anisomerous bridge topology structure is adopted to design the power converters and driver circuit. Double closed loop based on velocity and current is adopted to control AC-motor.

其控制电路主要包括主控模块、电流检测模块、位置传感器模块、串口电路、故障检测和保护电路等；采用不对称桥式扑结构设计了功率变换器及其驱动电路模块；采用速度和电流双闭环的形式，完成对交流电机的控制。

Finally, the Nuvi 265WT comes with a number of extras, including the Garmin Lock antitheft feature, a world clock, currency and measurement converters, and a calculator.

最后，努维265WT配备了一些额外的，包括生产锁防盗功能，世界时钟，货币和测量转换器，和一个计算器。

Its basic idea is to realize all kinds of radio communication functions, such as work band, kinds of modulation or demodulation, data format, encrypt mode and communication protocol by upgradable and displaceable software on a hardware platform which is opening, expanded and simple structure. And it makes wideband A/D and D/A converters close to the antenna, in order to develop more flexible and opening wireless communication system.

它的基本思想是以开放的、可扩展的、结构最简的硬件为通用平台，把尽可能多的通信功能，如工作频段、调制解调类型、数据格式、加密模式、通信协议等用可升级、可替换的软件来完成，并使宽带A/D和D/A转换器尽可能地靠近天线，以研制出具有高度灵活性、开放性的新一代无线通信系统。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48