调速

By contrasting and analyzing of various take-ups on belt conveyor . This design is mainly about automatic windlass tension station . Its drive part makes up into worm pair and gear driver . Windlass uses worm gear worm driving reel which binds wire rope to pull tight adhesive tape . In the meantime , it adopts the frequency conversion adjusting speed motor to control tensioning force .

通过对带式输送机各种拉紧装置的比较和分析，本设计主要是自动绞车式张紧装置的设计，其传动部分由蜗轮蜗杆传动和一对开式齿轮传动两部分组成，绞车用蜗轮蜗杆传动带动卷筒来缠绕钢丝绳，从而拉紧胶带，同时采用变频调速电机对张紧力进行控制。

Based on the Quasi steady state method,a computer simulation model of the transient performance of marine diesel engine-digital electronic governor system is established.

在准稳态方法基础上建立了适合于轮机模拟器的柴油主机-电子调速器系统动态过程仿真模型，并导出了柴油机变工况运行中一些过程参数的经验公式。

Variable load;Double loop DC motor control system;"Quasi-equivalent" model;Parameter identification

变负载；双闭环直流调速系统；类等效模型；参数辨识

The hardware circuit is made up by microcomputer controlling circuit, motor driving circuit, wire-feeding speed regulating circuit, arc welding power source main circuit, as well as the isolating, sampling, welding state identification circuit.

硬件电路由单片机控制电路、电机驱动电路、送丝调速电路、弧焊电源主电路以及隔离、采样、焊接状态识别电路构成。

The wire-feed speed control system based on negative feedback of speed is designed. The test proves that the performance of this system has been noticeably improved than the common systems. The system can be output steadily under the factors of wire-feed resistance changing or certain different performance of motors, and this system is the base for the further improving of the quality of the pulse MIG welding.

本文设计了基于速度负反馈的送丝调速系统，实验证明该系统的性能较一般系统有了明显的提高，在送丝阻力变化、电网波动或电机性能存在一定差异的情况下，该系统均可以稳定输出，为进一步提高脉冲MIG焊接工艺质量打下了基础。

This article angle has analyzed the higher professional technical education from CBE/DACUM "the electrical control technology" the curriculum ability localization, according to the higher professional technical education "the electrical control technology" the curriculum ability localization, point out the insufficiency and flaw existed in commonly used control electric appliance choice, electrical pilot wire road map, electricity control system installment, wiring craft, electrical control line fault diagnosis system approach, new starting velocity modulation equipment and control circuit, control circuit and main circuit aspect and so on.

摘要本文从CBE/DACUM角度分析了高职&电气控制技术&课程的能力定位，根据高职&电气控制技术&课程的能力定位，指出了现行高职&电气控制技术&教材在常用控制电器选择、电气控制线路图、电气控制系统安装、接线工艺、电气控制线路故障诊断的系统方法、新型起动调速设备及控制电路、控制电路与主电路的连接等方面存在的不足和缺陷。

The governor is designed with model structure. Closed-loop start-up strategy is applied during running and it realizes three adjust mode-frequency, wicket gate and power.

调速器采用模块结构进行设计，在调节过程中实现了闭环开机控制策略，并可在频率调节、开度调节、功率调节三种调节模式之间自动或手动无扰动切换。

Speed up the star wheel speed reducer, governor, strong self-priming pump and some other high-tech products industry, large-scale process.

加快星轮减速器、调速器、强自吸泵等一批高技术产品产业化、规模化进程。

The paper introduces the application of PLC and frequency control technology in constant pressure water-supply system,and explains the relevant energy-conserving effect.

介绍了PLC和变频调速技术在恒压供水系统的应用方案，并阐述了相关的节能效应。

Imports of used forklifts for controller, governor, for the switch, integrated hydraulic pump station, walking driving wheel, quality assurance, as a high-quality steel doors-materials, forklifts portal more durable.

采用进口叉车专用控制器、调速器、换向开关、一体化液压泵站、行走驱动轮，质量保证，优质型钢作为提升门架材料，使叉车门架更耐用。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。