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three-loops
相关语句
  三环路
     Computer Control of Three-Loops and Data-Read-Back Routes in RF System
     高频系统三环路及数据回读通路的计算机控制
短句来源
     The schematic diagram of three-loops and data-read-back routes in an RF system are presented, which has been developed with help of a control computer.
     文章描述了高频系统中三环路 (幅度、频率及相位控制环路 )的示意结构及远程计算机监管三环控制回路和数据回读通路的基本方案 ;
短句来源
     This system is reliable and effective to realize the real time control of three-loops and data-read-back routes of RF system.
     实际运行结果表明 ,系统运行可靠并成功地实现了高频系统中三环路和数据回读通路的实时控制
短句来源
  相似匹配句对
     Three.
     三、多姿多彩的艺术手法
短句来源
     Three.
     三.
短句来源
     The Three-dimension Accuracy
     三维精度
短句来源
     To-and-Fro Three Times
     三去三回
短句来源
     Loops Optimization
     编译中的循环优化
短句来源
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A chain circuit consisting of three integrated phase locked loops (i.e. three-loop-chain-circuit) can perform the functions of fixed phase shift (π), phase monitoring and low pass filtering. And these functions are carried out under conditions of automatic frequency follow-up. On this basis, a portable detector with simple structure for weak signal measurement could be developed.

以三片集成锁相环组合成鏈(简称三环鏈路),可以完成固定移相(π)、鉴相和低通滤波三项功能,并且是在频率自动跟踪条件下完成的。由此出发,可研制出一种结构简单、小型輕便的弱信号检测器。

The theory of plate-shape control remains in an early stage of experimentation and investigation.As a research project consigned by Hubei Committee of Scientific Development,the development of an industrial pressure servovalve and a new hydraulic roll-bending system has been carried out by the author. Begin ning with an analysis of the problems common in existing roll- bending systems,a concept of control based on a three-looproll-bend- ing system is explored and a mathematical model is established. Dynamic...

The theory of plate-shape control remains in an early stage of experimentation and investigation.As a research project consigned by Hubei Committee of Scientific Development,the development of an industrial pressure servovalve and a new hydraulic roll-bending system has been carried out by the author. Begin ning with an analysis of the problems common in existing roll- bending systems,a concept of control based on a three-looproll-bend- ing system is explored and a mathematical model is established. Dynamic analysis is also made on the model.It is shown through the dynamic analysis that,some characteristic features and performance of the three-loop roll-bending system is superior to some of the exist- ing foreign and domestic single-loop feedback roll-bending systems.

板形控制理论目前尚处于试验研究阶段,控制思想和方法还不完善。结合湖北省科委下达的小型可控轧机科研任务和武钢提出的技术协作课题,我们开展了工业用压力型伺服阀和新型液压弯辊系统的开发研究。本文系弯辊控制的研究小结文章。文中首先提出了研究的目的和意义;之后从分析现有弯辊系统存的在问题入手,探讨了三环新型弯辊系统的控制思想;建立了数学模型,并进行了动态分析;通过动态分析,指出了新的三环弯辊系统的特点和性能显著优越于国内外现有的单环压力反馈弯辊系统。

In this paper, a portion of the electric control system in the examine trailer of the flow rate instrument for a plant is described. The main circuit of the system is directly supplied by 3 phase SCR bridge in cross-connection. The control circuit is of circulating controllable and possesses the three-loop structure, i.e., the speed loop, the current loop, and the monitor loop in phase and frequency. It can control 2 sets of 3 KW and 4 sets of 22 KW DC motor simultaneously and drive the 10-ton trailer to work...

In this paper, a portion of the electric control system in the examine trailer of the flow rate instrument for a plant is described. The main circuit of the system is directly supplied by 3 phase SCR bridge in cross-connection. The control circuit is of circulating controllable and possesses the three-loop structure, i.e., the speed loop, the current loop, and the monitor loop in phase and frequency. It can control 2 sets of 3 KW and 4 sets of 22 KW DC motor simultaneously and drive the 10-ton trailer to work stably at the speed of 0|01-10 m/s.When using the phase-locked loop as frequency reference and the phase-locked speed control in medium power DC motor, apparent effects can be got to assure accuracy and repetition of the reference, widen the speed control range, improve the dynamic quality, and raise the stabilized accuracy. The accuracy of the system is superior to 0.1% and the speed control range can up to 1:2500.

本文介绍已用于某厂流速仪检定车电控系统之一部分.这个系统主回路采用可控硅三相全桥交叉联结供电;控制回路为环流可控并具有电流内环、速度外环和鉴频鉴相的三环结构,同时控制2台3千瓦或4台22千瓦直流电动机,带动10吨重的拖车,在0.01米/秒—10米/秒的车速中稳定工作.用锁相环作频率给定,把锁相调速用在中动率电机拖动,对于保证给定和反馈的准确性和再现性,扩大调速范围,改善动态品质,提高系统稳速精度,都具有明显效果,使调速范围达到1∶2500,系统精度优于0.1%.

 
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