变频器是电牵引采煤机的核心部件。
The frequency transformer is a key part of shearer loader with electrical haulage.
型是第一台全部采用国产元部件的电牵引滚筒采煤机。
The Type MG(?) 2-D electric-traction drum shearer was the first one manufactured completely in home-produced parts. Thed.
型是第一台全部采用国产元部件的电牵引滚筒采煤机。
The Type MG(?)2-D electric-traction drum shearer was the first one manufactured completely in home-produced parts.
根据电牵引采煤机的使用情况，提出了采煤机使用制动单元的必要性。
According to working condition of the electric haulage shearer, this article points out the necessity of using braking unit.
结合电牵引采煤机破碎机构行星齿轮传动原理，应用数学规划理论进行机械优化设计。
Couple transmission principle of electric haulage shearer breaking mechanism planet_gear use maths program theory for optimization of mechanical design.
分析大倾角电牵引采煤机液压制动器频繁抱闸的原因，提出的解决方案实用效果良好。
This paper analyses the reasons of frequent abnormal braking on shearer and gives ideas for solving problem which has well effect in practice.
提出了基于单片微型计算机MC 68hc05 B6的电磁调速电牵引采煤机牵引调速装置。
The paper introduced the haulage speed regulating device of the electric magnetic speed regulating electric haulage coal shearer with MC68HC05B6 microcomputer.
为了减少电气化铁路对其沿线的通信系统造成的干扰，电牵引供电系统可以采用自耦变压器供电方式。
Electrification railway will interfere with the communication system along the line. To decrease this kind of interference, the autotransformer power-supply mode can be adopted.
针对采煤机控制存在的时变、非线性、不确定等特点，将模糊控制策略应用到电牵引采煤机调速系统中。
Fuzzy control was applied to speed regulation system of electrical haulage shearer directed at the characteristics of time-varying, nonlinear and uncertainty.
MGTY-300/710电牵引采煤机采用了变频调速与直接转矩控制技术，是一种新型的电牵引采煤机。
MGTY-300/710 D. C. electricity-powered shearer is a new type shearer, which a frequency converter and direct torque control are employed.
此外，替代燃料源(例如电牵引和氢燃料电池)的开发减少了工业搬运车的碳排放，使其成为更环保的解决方案。
Furthermore, the development of alternative fuel sources, like electric traction and hydrogen fuel cells, have reduced the carbon footprint of industrial trucks, making them a greener solution.
论述MG250/591-WD电牵引采煤机截割电机恒功率控制系统，确保截割电机始终工作在额定功率附近。
The exposition about MG250/591-WD electric haulage shearer cutting motor constant-power control system guarantees the cutting motor to operate throughout nearby the rated power.
最后，利用所开发的电牵引谐波渗透程序ethp对一规模较大的实际电网进行了谐波分布计算，并分析了计算结果。
In the end, using the developed program ETHP (Electric Traction Harmonic Penetration), an actual large scale network is studied, and the calculation results are analysed.
系统地介绍了电磁调速电牵引采煤机计算机控制调速系统的构成和制动运行方式，并对电磁调速采煤机的特点进行分析。
Systematically introduce a mining machine draw by electricity and its speed governed by system and way of brake by computers in a mining machine whose speed is governed by electromagnetism.
对MG250/300-NWD型电牵引短壁采煤机，在大同进行工业性试验期间出现装煤效果差的原因进行分析，并提出改进建议。
The paper analyses poor loading effects of MG250/300-NWD electric-driven short-wall shearer during its testing period in Datong and puts forward the recommendations of improvement.
我们通过无线电与他沟通，他调节了差速和牵引力控制，让赛车恢复了平衡性。
We worked with him on the radio, and he adjusted the differential and traction control to get the car back in balance.
结论双向交替牵引手法配合低频电刺激是更为有效的治疗椎动脉型颈椎病的方法。
Conclusion the bidirectional alternate traction manipulation plus low frequency electric stimulation are effective in the treatment of the vertebral-artery-type cervical spondylosis.
方法：治疗组选用牵引治疗配合电运动治疗仪及穴位注射治疗，对照组仅采用单纯牵引治疗。
Methods: traction therapy, electrical kinesitherapy and acupoint-injection therapy were used in observation group, and only traction therapy was used in control group.
电铁机车沿铁路移动用电，其产生的谐波对电网的危害比其它谐波源更为广泛、严重，因此对电铁牵引供电系统谐波的正确检测具有重要的实际意义。
The harm of harmonic generated by locomotive of electrified railway, which uses electricity along the railway, is more widely and seriously than other harmonic souse to the power system.
第三章确定了SAQ- 150智能化牵引机的总体方案和机、电、液系统控制原理。
Third chapter has determined the SAQ-150 intellectualization tractor overall concept and machine, the electricity, the fluid systems control principle.
对作者所设计的这种浆式叶轮的电测实验表明：它具有较小的外滚动阻力和较高的牵引效率。
The results of the experiment shows that it possesses less outer rolling resistance and greater tractive efficiency.
城轨车辆的牵引电机在牵引和电制动工况下短时过载可达50%，瞬时过载可达100%。
The short-time overload of traction motors of urban vehicles in traction and electric braking can reach 50% while the transient overload can reach 100%.
利用电液伺服控制技术，设计一套适用在颈椎牵引椅中的电液伺服控制系统，通过M ATLAB软件对系统进行仿真，最终获得较好的控制效果。
A set of electro hydraulic servo control system was designed suitable for cervical traction chair and it was proved to be effective through MATLAB stimulation.
目的观察骨盆牵引联合中药电熨治疗腰椎间盘突出症的疗效。
Objective To observe the effect of pelvic traction combined with Chinese medicinal herbs hot pack-electrotherapy on prolapse of lumbar intervertebral disc (PLID).
本文介绍了电铁V/v牵引变接入系统的模型和电气化铁路接入电网方案的谐波评估方法。
Model of V/v transformer connected with power system and method for harmonic evaluation are described.
本文介绍了电铁V/v牵引变接入系统的模型和电气化铁路接入电网方案的谐波评估方法。
Model of V/v transformer connected with power system and method for harmonic evaluation are described.
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