采用变频调速控制，对风机、水泵类机械进行转速控制来调节流量的方法，对节约能源，提高经济效益具有非常重要意义。
Frequency control the use of fans, water pumps, type of machinery to carry out speed control method to regulate the flow of energy conservation, economic efficiency is very important significance.
本文针对风机转子进行了固有频率振型和临界转速计算。
Calculations were conducted of the fan rotor natural frequency, vibration modes and critical speeds.
采用变频调速控制，对风机、水泵类机械进行转速控制来调节流量的方法，对节约能源，提高经济效益具有非常重要意义。
Frequency control the use of fans, water pumps, type of machinery to carry out speed control method to regulate the flow of energy conservation, improve cost-effectiveness of great significance.
离心风机的转速及其出风口角度是影响联合收割机筛面气流场分布的两个主要因素。
Speed and the Angle of tuyere of Centrifugal fan are main factors for Combine sieve surface airflow distribution.
根据矿井通风机的特性，使用变频器进行转速调整以达到调节风量的目的，且有很好的节能效果。
The use of frequency convert to regulate the speed of rotation according to the character of mine fan can reach the goal of the modulation of air flow and have a very good effect of saving energy.
实验测量了在设计转速下该风机全工作范围的性能参数。
The performance parameters at the design speed are measured in the experiments.
本课题利用先进的智能控制技术及变频器调节风机的转速，从而节省风机的耗电量。
Now we use advanced intelligent control technology and inverter to adjust the fan's speed, which can save power consumption.
研究表明：分级粒径的大小与涡轮转速、抽风机风量、风压及涡轮结构参数有关。
The study shows that the separation size is related to the rotary velocity of the turbo, the wind volume and the wind pressure of the exhaust fan, the structure and parameters of the turbo.
PF系列棉花测产系统是由产量监视器、棉花流量传感器、割台高度传感器、地运传感器、风机转速传感器、GPS接收机和其它配件组成。
PF cotton yield monitoring system is consisted of a yield monitor, cotton flow sensor, head height sensor, ground speed sensor, fan speed sensor. GPS receiver and other components.
控制装置设有机组集控装置、励磁机交流励磁装置、发电机助磁装 置、发电机转速传感器和风机制动控制器；
The control equipment includes centralized control device for set, AC field system of exciter, device for assisting magnetism (DAM), speed sensor of generator, and braking controller for blower fan.
在进行经济技术性分析后，最终确定风机的设计方案，进而确定通风机适当的级型式、叶轮尺寸、轮毂比、转速和叶片数等基本参数。
Final design scheme is confirmed after economic and technical analyse. Then, axial fan 's stage type, impeller diameter, hub ratio , specific speed and the number of blades are decided.
挑膜主轴(26)上的大皮带盘(7)通过二级皮带(8)将加强的转速传到风机主轴(27)。
A large belt pulley (7) on the film picking main shaft (26) transmits the reinforced rotation speed to a fan main shaft (27) through a second-stage belt (8).
由于减少了齿轮箱和其他相关零部件，发电机的转速每分钟仅16 -17转，风机运行的可靠性和效率显著提高。
Due to no gearbox and other related parts, the turbine runs at low speed with only 16-17 RPM, so the reliability and efficiency is highly improved.
在此过程中，采用变频器调速控制风机转速。
In this process, using the frequency changer to control the fans 'rotational speed.
分析了矿井局部通风机自动控制的必要性，并提出自调整模糊控制调节通风机转速方案。
The necessity of mine local ventilator auto control is analysed, a kind of method of self-adjusting fuzzy control in mine local ventilator is proposed.
分析了罗茨鼓风机轴功率随压差和转速变化的特性，导出了相应的换算公式。
The character on change of the shaft power with the differential pressure or rotational speed for Roots blower is analysed, the conversion formulas for the shaft power are deduced.
煤气鼓风机为适应系统煤气量的变化采用改变风机的转速来进行调节是一有效的节能方法。
Adjustment through changing the blower's rational speed in order to adapt the gas blower to the change of gas amount is an efficient energy-saving method.
指出了空调器中的贯流风机的性能对转速非常敏感，对其特性曲线要进行跟踪转速测试。
The performance of cross flow fan in air conditioner is highly susceptible to speed is pointed out. Tracking speed measurement must be carried out on its characteristics.
根据直流牵引电动机在持续运行中的温升变化控制通风机的电动机转速，实现通风量调节，以达到节能目的。
According to temperature changes of the DC traction motor in continuous operation, the fan motor speed is controlled, and the purposes of regulation of ventilation and energy-saving are achieved.
使泵或鼓风机等转子能达到高转速，大抽量及用于不同的使用条件下。
The rotors of a pump or a blower can reach high rotational speed, and the utility model is used for different use conditions, such as large pumping amount.
通过在上位机中输入水泥熟料含水量及易磨性的检测值，系统根据专家经验控制熟料生产中送料机和风机的转速。
According to cement water content and cement clinker grindability, when we enter their test values in the monitoring system of the host computer, the control system can run due to the setting value.
该系统以排放出的瓦斯体积分数为参量，通过PID算法来调节局部通风机转速，实现了掘进工作面瓦斯的安全排放，保障了煤矿井下的生产安全。
The system regards the gas volume fraction as the control parameters and regulates rotational speed of local fans by PID algorithm, thus making possible the safe gas drai...
该系统以排放出的瓦斯体积分数为参量，通过PID算法来调节局部通风机转速，实现了掘进工作面瓦斯的安全排放，保障了煤矿井下的生产安全。
The system regards the gas volume fraction as the control parameters and regulates rotational speed of local fans by PID algorithm, thus making possible the safe gas drai...
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