PLC control is adopted in automatic control system for finishing area of Chuanwei 950 mm hot strip mill. Main functions include speed cascade control, tension control, looper control, APC control etc.
川威950热轧带钢精轧区自动控制系统采用P LC控制，主要实现速度级联控制、张力控制、活套控制、APC等。
Speed regulation system using cascade control method with thyristor is a low-cost system, but the classic system has some shortages, such as low power factor, serious harmonic pollution and etc.
晶闸管串级调速系统是一种廉价、简易的调速系统，但是传统串调系统存在着诸如功率因数低、谐波污染严重等弊端。
The control process of bar rolling speed was presented and the effects of low tension, loop and cascade control in speed regulation were described.
介绍了棒材轧线的系统结构及轧机速度控制过程，详细说明微张力、活套以及级联控制等在速度调节中的作用。
This paper starts from the physical processes of cascade speed control system and derives several groups of elementary electromagnetic equation, dynamic block diagrams, and matrix equations.
本文从串级调速控制系统的物理过程出发，推求出几组基本的电磁方程、动态结构图及矩阵方程。
Internal feedback cascade speed control system is proved to have a good cost performance and can be used on large and medium type fans extensively.
内反馈串级调速系统是一种具有优良的性能价格比的调速节能设备，适合于电厂的大中型风机调速节能运行。
A cascade speed control system mainly consists of a wound asynchronous motor, a three-phase rectifier and a three-phase thyristor (?) inverter.
串级调速系统的主要组成部分是线绕式异步电动机，三相桥式整流器和三相可控硅逆变器。
The paper introduced the application of internal feedback cascade speed control system on boiler fans in Yancheng Plant.
分析了异步电动机串级调速的工作原理与性能特点，介绍了内反馈串级调速电机及其装置的系统结构。
The paper introduced the application of internal feedback cascade speed control system on boiler fans in Yancheng Plant.
分析了异步电动机串级调速的工作原理与性能特点，介绍了内反馈串级调速电机及其装置的系统结构。
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