Random PWM technology is a direct and effective way to alleviate acoustic noise in adjustable-speed system.
随机脉宽调制是解决交流调速系统中声学噪声的直接有效方法。
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。
Note: According to customer's need the motor can be changed into adjustable-speed type in order to adjust the feeding capacity.
注：根据用户要求，可以将电机改成调速型，以便调整给矿能力。
To expand application ranges of soft pendent fan, it is necessary to develop a inversion adjustable-speed equipment to fit with the fan.
为拓宽微风吊扇的使用范围，需要研制一种逆变调速装置与微风吊扇配套使用。
The system has been debugged and the massive experiments have been done in the laboratory, and adjustable-speed function has been realized.
在实验室里对整个系统进行了调试和大量的实验，实现了调速的功能。
A case study for an adjustable-speed AC motor drive is demonstrated by means of a prototype experiment to prove its performance and effectiveness.
本文中，我们采用了一个简单的控制方法及系统设计，通过对一交流调速电机驱动器的原型实验，验证了该方法的有效性。
The brushless doubly-fed machine (BDFM) is based on the technic of field oriented control and the performance of its adjustable-speed drive can ultimately meet the need of the operation.
采用磁场定向矢量控制技术的无刷双馈电机调速系统，其性能基本能够满足运行要求，但存在超调及动态稳定慢等问题。
It is of high accuracy, high speed and flexible adjustable range.
具有精确度高、速度快、可调范围大的优点。
Comparing with frequency converting driving system for asynchronous machine and adjustable speed for DC motor, the driving system has a wide application foreground.
与变频异步电机驱动系统和直流电机调速系统相比，开关磁阻电机驱动系统有着广阔的应用前景。
Its vector control system is one of the most complicated ac adjustable speed control systems.
其矢量控制系统也是最复杂的交流电机调速控制系统之一。
Application of converter on fan adjustable speed and four purpose of using converter are introduced.
介绍了变频器在风机调速上的应用现状，使用变频器的四种目的。
The ACS 5000 variable speed drive system enables Boeing to run the fan in adjustable speed mode or at constant speed, depending on the protocols and parameters of each test.
ACS 5000变速驱动系统使得波音公司可以根据每个测试的规程和参数，自由设定可调速度模式或者恒速模式。
And adjustable speed the variable air volume air conditioning automatic control system saves energy through setting different static pressure values in different time periods.
变风量空调控制系统以变频调速为手段，分时段设定静压值以实现节能。
In the field of modern power driving, the adjustable speed control of AC asynchronous motor by inverter is a hot spot because of its notable energy saving function and continuous variable speed.
现代电力传动领域中，交流异步电机变频调速具有显著的节能效果，并且可以实现无级调速，已成为当前电力传动领域研究的热点之一。
They can make step motors run normally at an adjustable speed and in a subdividing running way and improve the precision and smoothness of the equipment.
单片机在步进电机电源部分控制中的应用，使步进电机能实现运行、调速及细分运行，并能提高设备运行的精度和平稳性。
When nonlinear loads, such as adjustable speed motor drives, affect a sinusoidal power source, the voltage waveform is distorted and becomes nonsinusoidal.
当加上非线性负载如调速电动机驱动器时，会影响正弦电源。电压波形畸变变成非正弦波。
At the same time, the machine is easy to operated, with adjustable speed, the effectiveness and speed of production can be adjusted according to the needs of users.
同时，该机的操作方便，速度可调，因此生产效果和生产速度还可以根据使用者的需求进行调整。
The paper introduces the basic cause of the sparkless space dispersion for DC motor with the wide adjustable speed ratio, and gives the control methods of projects.
本文论述了宽调速比直流电动机无火花换向区曲线分散的基本原因，并给出工程控制措施。
This paper presents the methods of transfer function analysis and engineering design for variable frequency adjustable speed system of induction motor supplied by current source inverter.
本文提出了一种异步电动机电流型变频调速系统传递函数的分析及工程设计方法。
Multi-purpose design, weight adjustable, the number of grinding adjustable, speed adjustable, can achieve the best result of construction.
多用途设计，重量可调，磨片数可调，速度可调，可达成最佳施工效果。
Physical Significance of adjustable speed characteristic for fan is stated and functional relation criterion between adjustable speed characteristic factor for fan is established.
阐明通风机调速特性的物理意义，建立系列风机调速特性系数与连续机号间的函数关系准则。
It has adjustable speed drive, smooth and reliable.
传动速度可调，平稳可靠。
Comparing the converter adjustable speed with damper throttling, the principle and virtue of converting adjust - able speed energy saving are stated.
通过变频调速与挡板节流进行对比，阐述了风机变频调速节能原理及其优点。
Direct Torque Control (DTC) technology is a high-performance adjustable speed method with fast torque response.
直接转矩控制是一种转矩响应快的高性能的交流调速方法。
The plates feeding is automatically, and it bakes plate continuously with adjustable speed. There are Chains drive beside the two sides of silk screen made by stainless steel, neversecund running.
自动进版，连续烤版，速度可调，不锈钢丝网两侧有链条带动，永不跑偏。
Based on the characteristics of adjustable speed with variable frequency systems, the paper presents an optimal design strategy.
本文根据变频调速集成系统的特点，提出具有针对性的变频调速电机优化设计策略。
A new type adjustable speed motors are introduced instead of imports, the effects of two braking structures to the motor are respectively analysed.
介绍了一种新型的可替代进口的调速电机，分析了采用两种制动结构对设备的影响。
This machine which is the nice machine for your testing department has the function with optional double-edged pressure, adjustable speed, adjustable route and settable number of stop bit.
该机设双头压力可配选、速度可调、行程可调、停止数可设等功能是贵公司测试部门的“良”机。
Using full adjustable speed fan provides the energy saving and low noise.
采用全调速风扇，实现节能、低噪。
This paper induces the lowest limit of frequency for variable-frequency adjustable speed and soft starting, gets the best starting frequency for soft starting.
本文推导出了变频调速及软起动的频率最低限，发现了软起动的最佳起动频率。
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