牵引速度

目前，国内的采煤机大部分都是通过调整牵引速度来达到恒额定功率的控制。

At present , a large amount of shearers control constant power through adjusting haulage speed in our country .

采用智能化控制系统自动调节滚筒高度及牵引速度，使采煤机负载趋于平滑。

The drum height and haulage speed both are adjusted automatically by using intelligent controlled system to make the load of cutter smooth .

发现随牵引速度的提高，PA6微纤的平均直径变小，尺寸分布更均匀，力学性能也随之提高。

The average diameter of PA6 fibrils decreased with the increasing draw rate , and the diameter distribution of fibrils became narrow , the mechanical properties were improved .

在螺旋装煤机式水平煤仓模型实验台上，通过正交实验，确定牵引速度vq，滚筒转速n，煤的断面形状S三因素对煤仓输出煤量的影响程度和三者之间的最佳匹配关系。

On the model experiment platform of HSB with helix loader , draught velocity , roller rotary speed , section shape of coal of impact extent for output quantity of coal and optimum matching among three factors were confirmed by orthogonal experiment method .

差热分析表明，随牵引速度的增大PP与PA6的相容性略有提高，X射线衍射分析表明拉伸作用对PA6纤维晶体中分子链的取向无影响。

DSC results show that the compatibility of PP and PA6 is improved slightly with the increasing draw rate . The orientation of PA6 molecular chains didn ′ t change with the changing draw rate by the X ray diffraction result , the orientation degree was zero .

方法：恒河猴10只行右侧MDO，间歇期5d，牵引速度0.5mm×2次·d-1，共15d。

Methods : Ten rhesus monkeys were used to perform right MDO . After 5 days , latency period , the distractor was initiated at the rate of 0.5 mm × 2 / day , totally 15 days .

连续定向凝固中临界牵引速度及其相关因素

Critical Pulling Velocity and Its Effect Factors during Continuous Unidirectional Solidification

采煤机滚筒转速与牵引速度范围匹配

The match of shearer drum rotational speed and traction speed

采煤机滚筒截齿配置及滚筒转速与牵引速度匹配关系的分析

Analysis of Matching Relation of Shearers ' Pick Arrangement , Drum Revolution Speed and Haulage Speed

为全面提高铁路运行的各方面效益，提高机车牵引速度成为铁路发展的必须经历的过程。

To fully improve the benefits of railway operation , increasing speed of locomotive is a particular course .

探讨了浇注系统、浇注温度、牵引速度等工艺参数以及内结晶器的冷却腔结构和锥度等对空心管坯成形的影响规律。

The effects of technique parameters , cooling cavity structure and conicity of inner-mold on shaping of hollow tubes were discussed .

由于电力牵引速度快、牵引功率大、无污染等优点，在我国具有良好的发展前景。

As a result of fast speed , high traction power and pollution-free characteristics , electric traction has a good prospects in our country .

鉴于以上原因，我们采用了较为实用的响应面法对拨车机牵引速度模式进行了优化。

In view of the above , a more practical response surface method has been adopted to optimize the traction speed curve of the positioner .

由操作者根据相关的参数及经验通过调节操作器的按钮设定牵引速度后，机器自动调节，满载运行。

Operator set haulage speed through operating press button with the related parameters or experience . Then shearer control automatically to operate throughout nearby the rated power .

特殊设计的真空定径箱，可以确保稳定的直径尺寸和圆整度，使用速度控制系统，使牵引速度稳定。

Special design vacuum sizing tank can ensure the stability of size and roundness , Speed controllers are used in extruder , haul-off to offer stability and precision .

该装置既可遥控采煤机的全部控制功能，又能遥测采煤机截割电机的运行电流、电压、牵引速度、故障状态等运行参数。

The device not only remotely controls all control functions but also remotely measures the running parameters , such as running current and voltage of cutting motor , haulage speed and fault conditions of shearer .

采用正交试验法研究温度梯度、浇注温度和牵引速度三个因素对自润滑高耐磨铝硅合耐磨性能的影响。

In this paper , temperature gradient , pouring temperature and hauling speed were studied using orthogonal testing method , which had effect on wear resisting property of the self-lubricate and high wear resisting aluminum-silicon alloy .

从获得最佳切屑厚度的原则出发，研究了采煤机滚筒截齿配置型式、滚筒转速与牵引速度的匹配关系。

This paper , starting from the rule of gaining the optimal cutting thick , conducts research on the matching relation of the model of the shearers ' pick arangement , drum revolution speed and haulage speed .

采煤机螺旋滚筒的装煤性能是一个重要指标，它是受许多因素影响的，本文在分析每一个影响装煤性能因素的基础上确定三个重要因素&转速、螺旋角和牵引速度。

Analyses are made of all the factors governing the loading performance of the shearer spiral drum , of which three are found to be the major ones , namely , rotational speed , vane angle and haulage velocity .

在额定起升及牵引速度下长期工作，设备完好率达98%以上，是目前在用国产缆机中跨距最大、塔架高度最高、无备用遥控通讯系统的缆机。

The intact rate of the crane may exceed 98 % after it works for a long time at the rated hoisting and traction speed . The crane boasts the largest span and the highest tower without spare remote-control communication system in China .

综采面输送机的运行负荷是随着煤层倾角、煤层厚度、工作面长度、煤壁片帮情况、特别是采煤机割煤时的牵引速度以及采煤机在工作面的工作位置的不同而变化。

The running load of AFC in a fully mechanized face changes with such factors as , dip angle and thickness of coal seam , length of face , spalling of rib , especially haulage speed and position of shearer at face in coal cutting .

试验发现：为保证合适的薄膜纵向撕裂强度和横向撕裂强度，应在高牵引速度、大吹胀比和高起霜线的条件下进行该树脂的加工。

It was pointed out that the resin should be processed in high towing speed , high B. U. R and high frost - line in order to make the films have proper longitudinal tear strength ( MD ) and horizontal tear strength ( TD ) .

同时充分利用非完整系统具有输入空间的维数比可控制的位形空间小这一特殊属性，仅用两个输入：牵引车速度和转向角，来控制拖车系统的运动。

Fully utilizing the character of the nonholonomic system , we control the movement of the trailers with two inputs - the velocity and Angular speed of the tractor .

无刷直流电机以其简单的结构和优良的控制性能在小功率牵引，速度控制，转矩控制以及伺服系统得到了越来越广泛的应用，有取代传统直流电机的趋势。

Brushless DC motor ( BLDC ) has been used increasingly more widely in low power traction , speed control , torque control because its compact construction and excellent controllability .

本文介绍了遥控驾驶靶车牵引车速度控制系统的组成和工作过程，阐述了车辆自动换档和发动机转速调节的控制方法。

Structure and the working process of a remote control vehicle for target towing were presented . Methods of control in automatic gear shifting and engine speed modulation were described .

牵引电动机无速度传感器及带速度重投控制

Speed Sensorless Control and Restarting at Unknown Speed of Traction Motor

遥控驾驶靶车牵引车的速度控制

Speed control of a remote towing vehicle for moving targets

直接转矩控制牵引系统全速度范围运行研究

Research On DTC Traction System Operating in Full Speed Range

牵引电机无速度传感器的间接转矩控制的应用

Application of Speed-Sensorless Indirect Torque Control for Traction Motor

传感器信号以这样一种方式影响变频器，使牵引箔的速度保持不变。

The sensor signal affects the frequency converter in such a way that the draw-off speed of the foil remains constant .