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- To improve reliability and raise effectiveness of radio beacon equipment,improvement scheme adopting advanced techniques like Direct Digital Drive,DGPS and merge net is discussed. 为有效增加无线电信标机的可靠性、提高效能,探讨了采用直接数字驱动、DGPS、并机网络等技术对无线电信标机进行改进的方案,可作为中波导航系统改进参考。
- direct digital drive 直接数字驱动
- The Design Research of Direct Digital Driving Source of Traveling Ultrasonic Motor 行波超声波电机直接数字驱动源的设计研究
- This paper introduces a DDC(Direct Digital Control) temperature system. 介绍一种 DDC(直接数字控制 )温度系统。
- Objective: To evaluate the value of direct digital panoramic sialography. 摘要目的：评价直接数字曲面体层摄影在涎腺造影中的临床价值。
- Objective:To evaluate the value of direct digital panoramic sialogra phy. 目的评价直接数字曲面体层摄影在涎腺造影中的临床价值。
- This system adopts Siemens S7-300 PLC, Eurotherm 590P series DC digital drive distribution I/O and touch panel to form a PROFIBUS-DP network. 本系统采用西门子公司的S7-300 PLC、欧陆公司(Eurotherm)的全数字直流控制装置590P、分布式I/O和触摸屏来组建PROFIBUS-DP总线网络。
- A new method LFM in direct digital frequency synthesizing ( DDS) based on CORDIC algorithm is introduced in this paper. 本文介绍了一种应用CORDIC算法的线性调频直接数字合成(DDS)的实现方法。
- Objective To research the application value of direct digital radiograph (DDR) in nasal bone imaging. 目的探讨直接数字化X线摄影(direct digitized radiography,DDR)在鼻骨摄影中的应用价值。
- This paper discusses the direct digital control (DDC) in the air-handing unit of air-conditioning system. 本文将讨论空调系统中空气处理机组的直接数字控制(DDC)设计。
- Direct Digital Frequency Synthesis(DDS) technique is introduced and its spurious error is mainly studied. 介绍了直接数字频率合成技术以及分析其杂散误差,对相位截断误差和幅度量化误差进行了傅立叶级数分析研究。
- A Quadrature Direct Digital Frequency Synthesizer (QDDS) based on CORDIC algorithm is presented. 设计了一种基于CORDIC算法的正交输出直接数学频率合成器(QDDS);并在ALTERA FLEX10K 系列FPGA上予以实现.
- A new DDC (Direct Digital Control) system won't improve the operation of malfunctioning or inoperable devices! 一套新的DDC系统不可能改善系统的运行故障或损坏的设备。
- MMW high resolution radar range profile two-step stretch processing method direct digital synthesis （DDS）. 标 签 毫米波高分辨雷达 距离像 双脉冲伸缩处理 直接数字合成(DDS).
- Direct digital controller(DDC) is the basic control unit of building automation system(BAS). 直接数字控制器(DDC)是楼宇自动化系统(BAS)的基本控制单元。
- Direct digital synthesis (DDS) is used widely more and more, because its unique performance. 直接数字频率合成（DDS）技术，因为其独特性能，得到了越来越广泛的应用。
- You get standard waveforms along with the flexibility to create your own using direct digital synthesis for a stable, accurate output. 除标准波形外,还具有使用直接数位合成得到稳定和精密输出的灵活性。
- full digital drive control system 全数字传动控制系统
- Electricity control technique developed from the relay system to the direct digit control( DDC) system the disperse control system( DCS) to the fieldbus control system ( FCS). 电气控制从继电器控制系统发展到直接数字控制(DDC)系统、集散控制系统(DCS)到目前的现场总线控制系统(FCS)。
- SERCOS is a international standard protocol,and it provided a realtime data exchange interface between NC unit and digital drives &PLC-IO. SERCOS是一种专用于数控单元与数字伺服装置及PLC-IO之间实现实时数据通讯的国际标准协议。
