The measurement of weak DC signal is the key technique for on-line DC monitoring system with XLPE power cables to improve its measurement accuracy.
为了提高XLPE电缆直流法在线监测的测量精度，需对微弱直流信号进行测量。
This paper introduces rebuilding electric control system of portal crane drived by DC and the application of digital DC speed controller, PLC and touchable industrial graphic monitoring system.
简要介绍直流驱动的门机电控系统改造，包括数字式直流调速器、PLC和触摸式工业图形监控系统的应用。
The working principle of the developed monitoring system is to assess comprehensively the insulation status of DC feeder cable through monitoring discharge signal and DC leakage current signal.
监测系统工作原理是通过监测电缆放电信号和直流泄漏电流信号综合评估电缆绝缘状态。
The control systems, system s constitution and functions of a monitoring and control system of DC power source screen based on PLC were introduced in the paper.
介绍了一种利用PLC控制的直流电源屏监控系统的控制要求、系统组成及功能等。
Based on function partition of modules and much sampling channels of power monitoring system for DC screen, a control system which takes MSP430 as control core and CPLD as extending ports is designed.
基于直流屏的电源监控系统的各模块功能划分与采样通道多等特点，设计了以MSP430单片机为控制核心，CPLD扩展端口的控制系统。
The state of DC motor used in the drive system is directly related to normal production. Therefore it is very significant to popularize on-line monitoring and diagnosis of DC motors.
使用中的直流电动机工作状态直接影响生产是否正常进行，因此对其进行在线监测与故障诊断具有重要意义。
The DC power system is determined to be composed of the main monitoring system , the DC insulation monitoring system and the parameter monitoring system with a blocking structure.
确定模块式结构的直流屏电源监控装置，分为主监控单元、绝缘检测单元、系统参数监控单元、电池巡检单元。
A new method of monitoring real-timely for DC system insulation using double asymmetrical Bridges in normal mode is adopted in this paper, and the shortcomings of symmetrical bridge are overcome.
本文采用了一种常态下利用双不对称电桥实时监测直流系统绝缘的方法，解决了上述问题。目前广泛使用的低频信号注入法容易受到直流系统支路中存在的对地分布电容的影响。
A new method of monitoring real-timely for DC system insulation using double asymmetrical Bridges in normal mode is adopted in this paper, and the shortcomings of symmetrical bridge are overcome.
本文采用了一种常态下利用双不对称电桥实时监测直流系统绝缘的方法，解决了上述问题。目前广泛使用的低频信号注入法容易受到直流系统支路中存在的对地分布电容的影响。
应用推荐