介绍了软件无线电的基本思想及结构，提出了一种基于可编程数字下变频器HSP50214B的中频软件无线电接收系统的设计方案。
The basic concept and architecture of software radio is introduced in this paper. And a type of software radio receiver based on programmable digital down converter (DDC) -hsp50214b is presented.
介绍了以P LC为控制单元，变频器为执行单元的全数字现场总线控制传动系统，重点讨论了系统的构成和实际应用。
This paper introduces the fully digit fieldbus control drive system which consists of PLC and frequency converter. The structure and application of the system are also discussed in detail.
模块的硬件设计主要包括：A／D转换器、数字下变频器（DDC）以及DSP，详尽讨论了A／D 器件AD6640和DDC 器件AD6624的设计和应用；
The design of hardware module includes A/D converter, DDC (Digital Down Converter) and DSP. The design and application of AD6640 and AD6624 are fully discussed in this part.
变频器的控制电路采用数字技术，容易升级、适用范围广。
Its control circuit adopts digit technology, so it is easily promoted, its applicable bound is wide.
该方法不需要外部接线，方法简单，频率设置精度高，属数字量频率设置，适用于单台变频器的频率设置。
This method does not require external wiring, a simple, high-precision frequency setting, a digital frequency settings for a single frequency transducer settings.
介绍了变频调速系统能量回馈原理，运用TI公司高性能数字信号处理器TMS320F 2811进行变频器能量回馈系统的设计。
It introduced the energy regeneration principle of the invertor system, and used the ti digital signal processor TMS320F2811 to design the invertor energy regeneration system.
在宽带数字接收机中，高速数据流的实时处理对后继数字下变频器性能提出了极为苛刻的要求。
The real time processing of high speed data flow makes strict demands on the performance of descendant digital down converter in the wideband digital receiver.
本文介绍了一种未采用SPWM专用芯片，而采用8098单片机实现的全数字式SPWM变频器硬件设计方案。
In this paper, method of hardware design for SPWM inverter controlled with 8098 chip-microcomputer is described.
实践证明，GC 5016作为数字上变频器性能满足TD系统的要求。
The practice proves that the performances of GC5016 as a digital up-converter meet the requirements of TD system.
该系统主电路采用三电平PWM变频器，以16位单片机80 98为核心组成数字控制系统，并采用空间电压矢量法的控制方法。
The device uses three-level PWM transducer as the main electric circuit of the system, 16 bits CPU 8098 as the the core of the digital control system.
在软件方面，主要介绍了数字下变频器的参数设置、接收系统的应用软件设计以及系统核心芯片ADSP2191的监控软件设计。
In the software design, the parameter setting of digital down converter, the application program of this receiving system and the design of ADSP2191 "s monitoring program are mainly introduced."
本文介绍了一种数字式下变频器的控制系统。
This paper introduces a numeral down converter control system.
本文详细介绍了AT通用变频器内置的全数字PSS调节器的设计方法。
The design procedures of PSS controller inside AT inverter for general purpose are presented in this paper.
介绍了应用单片机和变频器组成的数字式变频交流伺服系统及数字PID调节器设计。
This paper describes an AC frequency conversion servo system which is composed of single chip and converter and designs a digital PID adjuster.
该变频器采用全数字控制，结构简单、控制灵活，为变频器产品的开发提出了一种全新的设计方法。
The inverter USES the full digital control method, so it is simple in construction, flexible in control. This paper presents a new design method of inverter product.
在此基础上，提出了数字下变频技术在可编程数字下变频器HSP50214 B中的应用方案。
On the base of these, the paper analyzes applications of digital down converting in the HSP50214B programmable downconverter.
在数字式交鄄交变频器中，一般采用直线方程近似三角方程的方法实现余弦交点法求触发角。
An algorithm to realize the cosine wave-crossing method in digital cycloconverter is performed by using the linear equation to approximate trigonometric equation.
波形产生器主要由dsp和数字上变频器构成，DS P作为主控制器设定数字上变频器的调制方式和输出波形。
The waveform generator is composed by DSP and quadrature digital upconverter (QDU). DSP is used as main controller to decide the modulation mode and output waveform of QDU.
并详细介绍了一种基于数字信号处理器控制的交-交变频器装置。
A kind of cycloconverter based on DSP control is introduced in detail.
采用电机专用数字信号处理器TMS320 LF 2407a为控制核心，进行相关硬件设计，构成一套电梯专用变频器。
The elevator special inverter is designed with the core of motor control DSP TMS320LF2407A, combining related hardware.
该系统主回路为高低高结构电流源型变频器，采用单片机为核心的数字控制器，其控制策略采用转子磁通定向直接矢量控制。
This system is a high low high CSI, of which controller is based on a single chip computer. The control strategy adopts vector control.
最后给出了FPGA实现的数字下变频器在测试中产生的波形和频谱，作了测试结果分析。
At the end of this paper, waves and spectra generated by FPGA DDC during tests are given and test results are analyzed.
介绍了数字直接合成器 （DDS）、数字下变频器 （DDC）、数字滤波器等数字无线电经常用到的概念 。
We also introduced some concept of digital radio, including digital direction synthesizer (DDS) and digital down conversion (DDC) and digital filter.
全数字化接收机是实现软件无线电技术的重要基础，本文研究基于可编程四通道数字下变频器HSP5 0 2 16实现高频地波雷达数字接收机设计的若干关键技术。
The fully digitalized receiver is the important basis for software radio. Some key technologies about how to realize the HF ground wave radar receiver based on the HSP50216 are addressed.
全数字化接收机是实现软件无线电技术的重要基础，本文研究基于可编程四通道数字下变频器HSP5 0 2 16实现高频地波雷达数字接收机设计的若干关键技术。
The fully digitalized receiver is the important basis for software radio. Some key technologies about how to realize the HF ground wave radar receiver based on the HSP50216 are addressed.
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