基本释义:

值控制放大器

网络释义

1)value control amplifier,值控制放大器

2)VCA (value control amplifier),值控制放大器

3)VCA Value Control Amplifier,算值控制放大器

4)ratio control,比值控制

5)sequential control,轮值控制

6)PH value control,pH值控制

7)numerical control,数值控制

8)modulus control,率值控制

9)enthalpy control,焓值控制

10)pH control,pH值控制

用法和例句

Following the introduction of two methods for NH3/air ratio control in nitric acid production with oxidation process,by flow and by ratio,the author compared the differences between the methods in parameter indication,control method and system performance,which turned out the method with ratio control was more suitable.

对稀硝装置氧化工艺氨-空比值控制系统的2种控制方案——流量控制方案和比值控制方案分别作了介绍。

For this once-through boiler, the fuel/water ratio depends on load and steam temperature control, besides, the ratio control strategy based on load demand and de-coupling loop are applied.

外高桥1000MW超超临界机组是被控特性复杂多变且多变量相关的对象,协调控制系统采用负荷指令的静、动态前馈和汽轮机与锅炉间的解耦回路来保证控制品质;由于该机组锅炉为直流炉,燃水比既与负荷控制相关又与汽温控制密不可分,燃烧和给水控制系统采用以负荷指令为基础的比值控制加二者的解耦回路以基本保证燃水比;过热汽温控制采用以焓值调节器的指令修正给水流量指令来精确保证燃水比为主要手段,以喷水减温为辅助手段;Smith预估器被应用于过热、再热器喷水控制回路中,以解决汽温这种大迟延、大惯性对象的控制难题。

This paper,based on the study of a sewage treatment plant,discusses the demerit of traditional control in respect of pumping station,and introduces the characteristic as well as applications of fuzzy control and sequential control on it.

该文以某污水处理厂为背景,分析了传统控制在提升泵站控制中的缺陷和不足,介绍了模糊控制和轮值控制的特点及在泵站的应用。

The non-linear and lagging usually appears seriously in the neutralization course of acid and alkali, it not only brings a great difficulties for PH value control, but also wastes a large amount of neutralizer, so PH value is recognized as one of the most difficult control variables.

酸碱中和过程通常呈现严重非线性和滞后性，给PH值控制不仅带来极大的不确定性，也浪费大量中和剂，为此PH值被公认为最难的控制变量之一。

The level of automation of the pH value control system in China relatively falls behind, research and development of automatic system with good control effects and easy realization has much practical mean.

我国污水处理pH值控制系统的自动化水平相对落后,开发出具有良好控制效果、易于实现的自动化成套系统具有现实意义。

To improve the accuracy of homing is one of the complicated key problems in computer numerical control system development.

提高回原位精度是计算机数值控制（ＣＮＣ）系统开发中的关键技术难题之一。

Raw material modulus control system suitable for medium-size and pint-size cement plant using shaft kiln;

适用中小型水泥立窑企业的生料配料率值控制系统

Main control methods for intermediate-point superheat degree include water-fuel ratio control,enthalpy control,first-stage superheater spray correction,feedwater mild correction.

中间点温度过热度控制的主要手段有水煤比控制、焓值控制、一级过热器喷水修正、给水流量微量修正等。

A new non-linear system designed for use with pH control;

一种用于pH值控制的非线性系统的实现

Research of Sugar-Refinery pH Control System Based on S3C44B0X;

基于S3C44B0X的糖厂pH值控制系统的研究

Through the simulation of pH control,compared with traditional multiple model predictive control,its better effect .

通过pH值控制的对比仿真实验 ,证明其对强非线性过程的控制效果优于传统的多模型预测控制。