Analog fixed speed and digital variable speed.
模拟固定速度和数字式可变速。
Compact, accuracy variable speed drilling machine.
结构紧凑，精度变速钻孔机。
Contolled by microcomputer, displayed by led, stepless variable speed.
采用微电脑控制，LED显示，无级调速。
Based on vector control theory, a fully digital variable speed system is designed.
基于矢量控制理论设计了一套全数字变频调速系统。
Using importation system of infinitely variable speed, can adjust productional speed.
采用进口无级变速系统，可调节生产速度。
The changes in variable speed drive technology for electrified railways are summarized.
概述电气化铁路用可变速传动技术的变迁。
Variable speed wind turbine is one of hot research fields in large wind turbines these days.
变转速风力机是当前大型风力机研究领域的研究热点之一。
An adaptive feedback linearization controller for a variable speed wind turbine system is proposed.
针对变速风力发电系统提出了一种自适应反馈线性化控制器。
All this indicate that GEHP has good part load characteristic and fit for variable speed adjustment.
这说明燃气机热泵部分负荷特性好，可以很好的实现变速调节。
Variable Speed: New variable speed pumps offer a noticeable improvement over accumulator tank systems.
可变速的水泵：新的可变速的泵在压力鼓系统上面也有改进。
The operational layer controls also variable speed signs, lane closing symbols and variable message signs.
业务层还控制着可变速度标识，车道结束标志和许多可变信息标志。
Principle and method for selecting variable speed ratio curves of manual and power steering gears are discussed.
讨论了手动及动力转向器变速比曲线的选择原则及方法。
Individual infinite variable speed drive of each roll with AC-motors coupled to programmable frequency inverters.
电机驱动方式为交流变频无极变速驱动。
Most of main pump in pump stations driven by variable speed motor for long distance transport petroleum engineering.
在长距离输油（气）管道工程中，大部分泵站内的主泵采用调速电机驱动。
But for turbines above 1 MW they also started to take variable speed because of problems they had with the gearboxes.
但是对于1兆瓦以上的风电设备，由于齿轮箱设计的问题，他们也开始采用变速方案。
Rot of the work piece is assured by a SIEMENS brushless Digitally Controlled servomotor with infinitely variable speed.
工件的旋转，由西门子无刷数控伺服马达控制，它可以用不同速度运行。
Variable frequency and variable speed motor system is of high intelligence, high reliability, fault-tolerant capability.
变频调速电动机系统具有高智能、高可靠性和高容错能力。
The impulse value of a impulse mechanism has a notable influence on the dynamics capability of impulse variable speed device.
脉冲发生机构速度波动的大小，显著影响无级变速器的动力学性能。
We discuss mainly some kinds of typical control methods of modern AC variable speed and their application in Marine electric propulsion.
综述了现代交流调速技术的几种典型控制方式在船舶电力推进中的应用。
The multi-target rapid maneuver control problem is studied for agile satellites with Variable Speed Control Moment Gyro(VSCMG) as actuator.
研究了以变速控制力矩陀螺（VSCMG）作为执行机构的卫星多目标快速机动的控制问题。
The application of ABB ACS800 direct torque control (DTC) frequency-variable speed control system in the reducer loading test was presented.
介绍应用abb公司的ACS800直接转矩控制(DTC)变频调速控制系统具体实现减速机性能的测试。
And aiming at robust stability, steady state accuracy and capability of anti-jamming, we take the experiments of the variable speed and load.
针对系统的鲁棒稳定性、稳态精度以及抗干扰能力，进行了变负载、变电机转速实验。
A variable speed constant frequency wind power generation system of doubly-fed induction generator based on converter excitation was described.
建立了基于变换器励磁的双馈感应电机的变速恒频风力发电功率控制系统的模型。
This paper mainly discusses the control and protection system for the 20kw VSCF (Variable Speed Constant Frequency) Wave Power Electric Station.
本文着重介绍了20千瓦变速恒频波力发电系统的控制功能和保护体系。
Establishment of torque mathematic model for a variable speed turbo coupling is the key for analysis and calculation of system dynamic response.
建立调速型液力偶合器力矩特性数学模型是分析和计算机械系统动态响应的关键。
An ABB variable speed drive system is to power the giant fan that generates subsonic wind speeds at Boeing's flagship wind tunnel in Philadelphia.
ABB的一个变速驱动系统正在为波音公司在费城的旗舰风洞的大型风扇提供动力，以制造出次音速风速。
The presented linearized model of doubly-fed induction generator is suitable to the related researches of doubly-fed variable speed wind turbines.
文中提出的双馈感应发电机线性化模型适用于变速恒频双馈风力发电系统的相关研究。
This paper presents the design of thyristor triggering circuit for a variable speed constant frequency (VSCF) wave energy electricity generating system.
介绍了变速恒频波浪能发电系统的晶闸管触发电路设计。
Take the manufacture of Z535 variable speed gear box for example, to analyze the causes of gear noise and effective technological means of noise control.
以制造z 535变速齿轮箱为例，分析了齿轮噪声的产生原因和控制噪声所采用的有效工艺手段。
The utility model can be synchronously driven with a screw conveyor or can be independently driven by a fixed speed or variable speed transmission device.
可与螺旋输送机一起同步传动或者用固定速度或变速的传动装置单独传动。
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