No commutator motor is a new variable-speed motor, its adjustable-speed performance is more advantage than dc system.
无换向器电动机是一种新型的可调速电机，其调速性能优于直流调速系统。
Providers rotation torque to 17,500 ft-lbs (23,727 Nm) with variable rotation speed to 180 RPM for exceptional horizontal and direction drilling performance.
最高转矩17，500 英尺·磅（23，727牛顿·米），可变转速最高180转/分，带来无与伦比的水平钻井与定向钻井性能。
Therefore, an effective combination of ramp metering and variable speed limit control is important to achieve a good performance.
由此，匝道调节率与可变速度限制间高效的联合控制对于提高道路性能显得尤为重要。
This paper presents the performance of new model monkey winch for mine. and its design calculation of the planetary differential variable-speed drive device.
介绍了一种新型矿用小绞车的性能及其行星差速变速传动装置的设计计算。
Variable nozzle turbocharger (VNT) can improve the low-speed performance and emission of turbocharged diesel engine. Turbine experiment of JK90S turbocharger with rotating vanes was undertaken.
将所设计的JK90S转叶式可变喷嘴涡轮增压器进行了涡轮性能试验。
The results also show that the performance of variable working condition of hybrid system can be improved by changing the rotational speed of gas turbine.
研究结果还表明，由于供给燃料发生变化而引起的燃气轮机转速的改变，有利于改善混合动力系统的变工况性能。
The practices show that it achieves the goal of raising performance and saving energy by applying variable frequency speed adjusting. The economic and comprehensive benefits are noticeable.
实践表明，收尘排风机控制系统采用变频调速后，达到了提高系统性能和节能的目的，其经济效益和综合效益显著。
The paper puts forward a new structural concept by analyzing the performance and structure of the first water - medium variable speed fluid couplings to further perfect the functions of equipment.
本文通过对我国第一台水介质调速型液为偶合器性能和结构的分析，提出新型结构的构想，以进一步完善设备的功能。
Variable valve train enables the engine to achieve the best valve timing at a very high speed and load. Thus the performance of the engine can be improved.
配气可变机构可使发动机在较高转速和全负荷范围都能得到最佳配气，因而改善了发动机性能。
In the process of rotor speed identification, the variable parameters PI mechanism, which has good dynamic and static performance and robustness are used.
在转速辨识过程中，应用了具有较好动态性能和鲁棒性的变参数PI算法。
Being a simple and reliable speed control system for AC inductive motors, the device features better performance than AC variable voltage speed control system does.
本装置的性能优于交流调压调速系统，是一种简单而可靠的交流绕线式电动机转速控制系统。
Variable geometry turbine (VNT) can improve the low-speed performance and emission of turbocharged diesel engine.
可变喷嘴涡轮调节技术是改善增压柴油机低速性能、降低柴油机排放的有效措施。
Running conditions of parallel-connected variable and constant speed pump are discussed using pump performance curve, and the correct switch steps are pointed out.
利用特性曲线对变速泵与定速泵并联运行工况进行了讨论，指出其正确切换步骤。
The second variable of supply chain management performance is velocity-or the speed of the supply chain . It is governed by the speed of access to good data, planning cycles and execution cycles.
影响供应链管理的第二个变量是周转率，或是供应环节速度。它取决于获得有效数据的速度，计划周期和执行周期。
The stator resistance of asynchronism electromotor in direct torque control system, is a variable value which influence the low speed performance of the system.
在直接转矩控制系统中，异步电动机定子电阻为一变化值，从而影响了控制系统的低速性能。
Features: Using the world famous HONDA gasoline engine-HONDA, Japan's NHK bearings, machine adopts advanced technology in Japan, stepless variable speed, superior performance.
产品特点：选用世界名牌本田汽油发动机-HONDA，日本NHK轴承，整机采用日本先进技术，无极变速，性能优越。
The performance of AC variable speed drive system has been improved greatly since field-oriented control is applied.
矢量控制使交流调速系统的性能产生了质的飞跃。
Variable-speed control pump performance, more economical, a broader scope of application of all agricultural water pumps can be used.
变速调节水泵性能，比较经济，适用范围较广，对所有农用水泵均能采用。
Based on the rotor flux vector control as a kind of variable speed system control method, with very good dynamic and static performance, received extensive attention.
基于转子磁链定向矢量控制作为交流调速系统中的一种的控制方法，以非常优良的动态和静态性能，受到了广泛的关注。
It is of the humane design, variable frequency speed regulation, stable and reliable performance, high automation degree, It is the best equipment for assembling the plastic caps.
该机设计人性化，高频调速，性能稳定可靠，自动化程度高，是塑料盖组装的最理想的设备。
Simulation research has been taken for its operation performance and the result indicated that BDFM was very suitable for the use of variable frequency adjusting speed.
然后简要分析了无刷双馈电机的基本原理，并对其运行特性进行了仿真研究，结果表明无刷双馈电机非常适合作为变频调速用电机。
Simulation research has been taken for its operation performance and the result indicated that BDFM was very suitable for the use of variable frequency adjusting speed.
然后简要分析了无刷双馈电机的基本原理，并对其运行特性进行了仿真研究，结果表明无刷双馈电机非常适合作为变频调速用电机。
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