The show energy conservation effect of frequency control system is the best.
说明了变频调速系统的节能效果是最好的。
Finally, it is applied for the design of varied-frequency control system under constant-pressure.
最后，应用于高精度变频恒压控制系统设计中。
At present very few meet the requirements of Coal Mine Safety flameproof frequency control system products.
目前还很少有符合煤矿安全要求的隔爆型变频调速系统的产品。
This paper advances some measures for frequency control system of rope-tracting rail vehicles based on PLC in Zhangcun Coalmine.
对漳村煤矿基于PLC控制的绳牵引卡轨车变频调速控制系统提出了若干抗干扰措施。
The simulator can be used in feasibility study for designing load frequency control system and simulating power system operation.
程序主要用于电网自动调频系统设计的可行性研究以及对电网运行的动态模拟。
A slip frequency control system of asynchronous motor used DSP as control center is presented, which apply to the electric tourist car.
介绍一种以dsp为控制核心的异步电动机转差频率控制系统在电动游览车中的应用。
From the concept of direct high-high type frequency control system, introduce the importance of high-voltage in this particular speed control system.
从直接高-高型变频调速系统的概念，引入高压变频器在这种特殊调速系统中的重要性。
As the mine hoist on the speed of addition and subtraction accuracy and speed requirements of high precision, variable-frequency control system must be used.
由于矿井提升机对转速精度及加减速度要求较高，必须采用高精度变频调速系统。
Tilt pouring devices and rotary rapid crystallization device operation control is the use of digitally controlled frequency control system to automatically adjust.
倾转浇注装置和旋转式快速结晶装置的运行控制是利用数控式变频调速系统自动调节。
In the light of the pickup current of a submersible electric pump being too large when started at full pressure, a new variable frequency control system is developed.
针对电动潜油泵工频全压启动时存在启动电流过大等诸多问题，开发出新型电动潜油泵变频控制系统。
The applied plan is introduced of frequency control system by the microcomputer for constant -pressure water supply to circulating pump stations, and the system is analysed.
介绍了微机控制变频恒压供水系统在循环泵站中的应用方案，并对系统进行了分析。
According to wave analysis and theoretical calculation of PWM inverter with delay-loop current tracing, this paper proposes a frequency control system with current tracing SPWM.
通过对滞环电流跟踪型pwm逆变器的波形分析和理论计算，提出一种固定开关频率型电流跟踪SPWM变频调速系统。
The problem of tuning of the load feedback control system of boil-turbogenerator unit, as the turbine is equipped with power-frequency control system, is discussed in this paper.
本文讨论汽轮机采用功频调节系统时，锅炉-汽轮发电机单元机组负荷反馈控制系统的整定问题。
A kind of medium voltage AC variable frequency control system, which consists of voltage source inverter, sinuous filter and stepup transformer with variable frequency, is introduced.
介绍一种采用低压电压型变频器、正弦波滤波器和变频升压变压器构成的低-高式中压变频控制系统。
On the basis of analyzing vibratory frequency control system of vibratory roller, the controller are designed and the plan of vibratory frequency constant control by PID are put forward.
在分析振动压路机振动频率控制系统的基础上，对控制器进行了设计，提出了采用PID控制实现振动频率恒定的方案。
The paper introduces the working principle of which frequency control technology is applied in energy-saving reformation for ventilating fan. The frequency control system was designed in detail.
介绍了利用变频调速技术对通风机进行节能改造工作原理及系统设计。
In the study of, I introduce the the basic structure of the Frequency Control System, and tell something about how I use intelligent IGBT module IPM to produce the Frequency Control main circuit.
在研究变频调速系统的基本结构中，对变频调速系统的基本结构，以及如何利用IGBT智能模块IPM实现变频调速主电路的进行了介绍。
You can control the range of frequencies available, the rate at which the governor checks utilization on the system, the utilization thresholds, and the frequency step rate.
您可以控制可用频率的范围、调控器检查系统利用率的频率、利用率阀值以及频率渐进率。
Physical features and frequency of water temperature control system with variable parameter are analyzed.
本文分析了变参数水温控制系统的物理特性及频率特性。
On line predicting obtaining power system post disturbances steady frequency is beneficial for frequency stability assessment and emergency control.
在线预测系统扰动后的稳态频率，有利于扰动后系统频率稳定性评估和紧急控制。
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。
Glass frequency electrical transmission system using speed control.
玻璃传送系统采用变频电机调速控制。
USES frequency conversion control system, can real time monitoring gas supply lines gas pressure, make the gas supply pipe gas pressure constant, improve the production efficiency and product quality.
采用变频控制系统后，可以实时监测供气管路中气体的压力，使供气管路中的气体的压力保持恒定，提高生产效率和产品质量；
The current measurement and control system in a Low-frequency Magnetic Field is a comprehensive system of hardware and software, including two parts: current measurement and computer control.
低频电磁场电流测控系统包括电流测试和输出控制两个部分，由软件和硬件相互配合组成一个完整的计算机控制系统。
A long field running of the medium-frequency power supply shows that the control system presented in this paper greatly improves its stability and quality.
长期的现场运行表明，这一控制系统大大提高了电源的可靠性及中频电源产品质量。
This paper discusses the slip frequency control of variable frequency regulating speed system, and analyses the shortage of this control way.
本丈对转差频率控制的变频调速系统进行讨论，分析这种控制方式所存在的不足；
This paper provides both vector control and frequency difference control to modulate the system of double motors transmission.
提出一种通过矢量控制和差频控制原理控制的双电机传动系统。
This paper describes a slip frequency vector control system of induction motor using chip microcomputer MCS-51. A structure with parameter adaptive compensation is analysed and designed.
本文介绍一种采用单片机MCS - 51实现的异步电机滑差频率矢量变换控制系绕，分析并设计了具有参数自适应补偿的系统结构。
An improved pitch control scheme is presented by introducing a frequency deviation signal into the control system.
提出了一种改进的桨距角控制方案——将系统频率偏差信号引入桨距角控制系统。
An improved pitch control scheme is presented by introducing a frequency deviation signal into the control system.
提出了一种改进的桨距角控制方案——将系统频率偏差信号引入桨距角控制系统。
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