This paper introduces the testing priciple of the drilling fluid lubrication tester,describes the priciple of direct current electromotor PWM modulatio,as well as ripple suppression theory and method in the switching process.
文章介绍了以PHILIPS P87LPC768单片机为核心的极压仪(钻井液润滑测试仪)测试的基本原理,并结合直流伺服电机的控制技术,阐述了直流电动机PWM调速原理,电枢电流斩波控制中为使电感电流连续导通斩波器开关频率的选取,以及在整流过程中产生的纹波抑制的理论和方法问题。
Quasi-focused characteristics of laser beam with waviness modulation;
具有波纹调制激光光束的准聚焦特性
technology of manufacturing corrugation forming machine
波纹成型机制造技术
computer-integrated manufacturing techniques
计算机集成制造技术
Design of Molding Mould Used in the Convolute Manufacture Technology of Motor Iron Core
电机铁芯卷绕制造技术中的成型模设计
The Mental Mould Manufacture of Electromotor Shell Based on Rapid Prototyping Technology;
基于快速成型技术的电机壳体金属模具制造
Research of the Technology of the Servo Control Wave Maker System Based on Network;
基于网络的伺服控制造波机技术研究
Fingerprint classification provides indexing mechanism for a large fingerprint database.
指纹分类技术为大型指纹数据库提供了一种重要的索引机制。
Computer Integrated Manufacturing System and Application of Group Technology;
计算机集成制造系统与成组技术应用
Research on the Slicing Technology in Rapid Prototyping and Manufacturing;
快速成型制造中分层处理技术的研究
The Technology of Rapid Tooling Based on Rapid Prototyping;
基于快速成型技术的快速模具制造技术
Rp Based Rapid Mould Manufacturing Techniques Using Plaster Casting;
基于快速成形技术的石膏型快速模具制造技术
Research of the Technology of High-power Wave Maker Based on Network Motion Control
基于网络运动控制的大功率造波机技术研究
A Research for Application of CIM Technology in Shipbuilding Enterprise
计算机集成制造技术在造船企业的应用研究
Original 3D Woodgrain Forming Technology for Fair-Faced Concrete
原生态立体木纹清水混凝土木纹成型技术
The success of the test and manufacture of the bellow supplies helpful experience for developing large size bellows in future.
该波纹管的试制成功 ,为今后大型波纹管的开发提供了有益的经验
A new technique for fabricating EMIF in thin film IC based on superfine processing technique is proposed.
提出一种基于集成电路超微细加工技术制造电磁干扰滤波器的薄膜集成制造新技术。
Studying on the control system technique reforms of the electro-hydraulic servo rocker-flap wave maker;
引进电液伺服摇板式造波机控制系统技术改造研究
by skilful modelling
用熟练的模型制造技术.
stereolithography technology [SLA technology]
激光立体原型制造技术