This article base on H-bridge PWM control theory,with the core of N channel power MOSFET,make use of optoelectronic isolator design a high-power driver circuit for DC motor,the circuit could meet with the need of reverse rotation and speed regulation for DC motor.
以N沟道增强型场效应管为核心,基于H桥PWM控制原理,利用光电隔离器设计了一种大功率直流电机驱动控制电路,该电路能够很好地满足直流电机正反转控制和调速的需要。
In order to calculate inductance gradient of augmented rail gun based on finite element method,this paper deduced armature s force formulation,illustrated inductance gradient s physical meaning,introduced the governing equation of 2D time-harmonic eddy current,built rail gun s 2D finite element method;a typical structure augmented rail gun s inductance gradient is calculated accurately.
为了实现对增强型轨道炮电感梯度的有限元计算,推导了其电枢的受力公式,阐明了电感梯度的物理意义,介绍了二维时谐涡流场的控制方程,建立了电感梯度计算的二维有限元模型,对一种典型结构增强型轨道炮的电感梯度进行了精确计算,讨论了电感梯度受时谐分析频率和外轨道尺寸影响的规律,给出了不同影响因素下轨道内部电流密度和空间磁力线的分布图。
An equivalent circuit model of tunneladder traveling wave tubes(TWTs) was constructed.
建立了沟道梯型行波管的等效电路模型,并用等效电路与模拟软件相结合的方法求解了沟道梯型慢波电路的色散、耦合阻抗和衰减,所得到的本征频率与实验数据的误差在0。
Augmented rail gun inductance gradient and its affecting factors
增强型轨道炮电感梯度及其影响因素
Study on the Cross Interaction of Rail-coil Combined Electromagnetic Gun
轨道-线圈复合型电磁炮交叉作用研究
The Enhanced Survibility of SDH Ring Optical Network Topology in Rail Transit;
轨道交通中SDH环形网络拓扑的增强生存性研究
Rail and Armature Joule Heating of an Electromagnetic Rail Gun
电磁轨道炮导轨和电枢中的焦耳热分析
Discussion on Land USE Intensity About Different Type of Rail Transit Station Area;
不同类型轨道交通站点地区开发强度探讨
Primary Study on Interior Ballistics of a Small-caliber Electromagnetical Rail Gun;
小口径电磁轨道炮内弹道特性初步研究
Strengthens the City Track Transportation Enterprise to be Right Folk Capital Attraction Research;
增强城市轨道交通事业对民间资本吸引力的研究
though good enough to orbit men,
虽然强以把人送入轨道，
Price Regulation Model of Multi-department Nonlinear Dynamic Economic System ON Optimal Increase Orbit;
多部门非线性动态经济系统最优增长轨道上的价格调整模型
free electron molecular orbital model
自由电子分子轨道模型
A study on information path way and strengthening strategy in learning organization;
论学习型组织的信息通道及其增强策略
Analysis of Car Model Selection for Jinbin Light Rail Project in Tianjin
天津津滨轻轨工程轨道车辆选型分析
Interaction between Girder and Rail of Rail Transit Viaduct with U-shape Girder;
轨道交通槽型梁桥梁轨相互作用研究
The Sentry Damage augmentor rig bonus is applied properly.
岗哨炮伤害增强设备改装件加成已应用。
Optimal Design of Multilayer Autofretted High Pressure Chamber of Water Cannon
水炮的多层自增强高压腔筒的优化设计方法
A Method for Cannon Barrel Image Enhancement Based on Human Eye Visual Characteristics
基于人眼视觉特性的火炮内膛图像增强方法
Technology Research on Shell Beam Image Intensification Based on the Wavelet Transformation
基于小波变换的炮弹射线图像增强技术研究
Finite Element Analysis of 3D Transient Eddy Field in Electromagnetic Railgun
电磁轨道炮三维瞬态涡流场的有限元建模与仿真