contravariant

用法例句

This paper analyses the rationale and the design of the inverting MAG welding machine using the peak current mode control.

分析了峰值电流控制模式的基本原理和设计需要解决的问题 ,研究了峰值电流型控制模式IGBT逆变MAG焊机的一些设计要点 ,包括斜坡电流的检测、波形处理、斜坡补偿、轻载问题的解决和过流保护电路的设

The principle of voltage soft-switch inverting, the method of measuring welding current by magnetic-loop and their advantages are discussed.

介绍了采用ＩＧＢＴ作为开关元件的弧焊逆变器，论述了电压软开关逆变原理、弧焊电流磁环检测方法以及其优点，介绍了电流调节器的应用。

The circuit is fit for the PWM rectifying and inverting situation at which the power should flow in two direction.

该电路特别适合于能量需双向流动的PWM整流和逆变场合。

Design of digital inverter for submerged arc welding;

数字化逆变埋弧焊电源的设计

Parameter design for main circuit of soft switch invert welding power source;

软开关逆变式弧焊电源主回路参数设计

A Review of the Application of Invert Technology to the Resistance Spot Welding;

逆变技术在电阻焊中应用研究

Improvement of the switch frequency and the material-decrease for spot welding inverter power;

提高逆变点焊电源开关频率与节材

Medelling and simulation of resistance spot welding inverter;

电阻焊逆变电源的simulink建模及仿真

MAG/CO_2 inverter welding power with complete remote control;

具有全遥控功能的逆变MAG/CO_2焊机

In order to improve the power parameter further,the intermediate frequency inversion of an electric voltage power type series resonance and frequency trace technique are adopted.

为使系统的功率因数较高,采用电压源型负载串联谐振中频逆变器和频率跟踪技术。

A new current control resistance welder with inversion is designed.

设计了一种新型的电流型控制的逆变点焊机。

In addition,the paper introduces the functions of inversion circuit and the working model of controlling and charging.

KA3525是PWM控制器件,利用其输出方波脉冲激励逆变器推挽电路的工作原理,使输出功率器件工作在开关状态,从而达到高效的目的。

independent inverter

无源逆变器，自励逆变器

Nielsen transformations and its inverse transformations of Schottky groups

Schottky群的Nielsen变换与逆变换

DC reversible variable speed motor

直流可逆变速电动机

load-commutated inverting circuit

负载换流式逆变电路

output voltage regulation of inverter

逆变电路输出电压调节

The frequency inverters has a function of variable voltage and variable frequency.

频率逆变器具有变压、变频功能。

The Design and Implement of the Reusable Inverter Quantizition and Inverter Transform Module in Video Decoder;

视频解码逆量化和逆变换的可重用IP设计研究

The Reverse and Normal Transformation of Martensite, Seasonal Crack of Brass, Cry of Zinc

马氏体逆变与顺变黄铜季裂与锌“哭”

Research on Isolated Boost Converter and Flyback Inverter;

隔离Boost变换器和反激逆变器的研究

Research on Inverter Based on Single-Stage Boost DC/DC Convertor;

单级Boost直流变换器型逆变器研究

Research on the DC/AC Link of the Modulariation Aviation Static Inverter;

模板化航空静止变流器逆变环节研究

Research of An Inverter Using DC/DC Converter Topology;

基于DC/DC变换器拓扑逆变器的研究

Simulation for Three-lever Inverter of Variable-frequency Speed Governing System

三电平逆变器变频调速系统的Matlab仿真

High-speed motor inverter using DC/DC converter

采用DC/DC升压变换高速电机逆变器

A NEW DEVELOPMENT OF INVERTER FOR ARC WELDING--POWER MOSFET INVERTER FOR ARC WELDING

弧焊逆变器的新发展——大功率场效应管弧焊逆变器

Multilevel Inverter Combination Topologies and Fault-tolerant Techniques in Multilevel Inverters;

新型多电平逆变器组合拓扑结构和多电平逆变器的容错技术

Comparison Study on Square-wave VSI and Two-step Level VSIs;

方波型电压源逆变器与二阶梯波电压源逆变器的比较研究(英文)

Inversion Algorithm of Multivariable Linear Time-Variable System and Its Reduced Inverse System;

多变量线性时变系统的求逆算法及降阶逆系统