Calculation by theoretical analysis may ascertain the ideal rotate speed of variable-speed pump and ideal opening of regulating valve, completes adjust process at one time.
经理论分析计算，确定变速泵理想的转速，确定调节阀理想的开度，调节过程一次完成。
In this paper, the principle of variable speed pump control hydraulic differential cylinder is designed, and the simulation model of system is built, and the simulation research is carried out.
给出了采用变转速泵控闭式回路控制差动缸的原理，建立了该系统的数学模型，进行了计算机数字仿真研究。
This dissertation has analyzed the full-load speed characteristics of the diesel engine, some load tempo characteristics and characteristics of variable pump at first.
本文首先分析了发动机的全负荷速度特性、部分负荷特性和变量泵在不同的工况下的效率特点。
Variable-speed control we already know, at a certain speed axial flow pump are working under, and to obtain the corresponding flow, lift, power and efficiency.
变速调节我们已经知道，轴流泵是在一定转速下工作的，而且获得相应的流量、扬程、功率和效率等。
The model of hydraulic motor pump variable speed control system is built.
同时建立了该液压电机泵变速控制系统的数学模型。
The parallel-connection and variable-speed operation characters of the centrifugal pump groups are studied by conics fitting of the character curves in the high efficiency area.
通过对离心式水泵高效工作区的性能曲线进行二次拟合，分析了离心式水泵机组并联调速运行特性。
Simulation analysis was carried out for the variable speed pump-control-motor hydraulic system. Mathematic models of inverter, asynchronous motor, fixed pump and load were set up.
本文对变转速泵控马达液压系统进行了仿真分析，建立了系统中变频器、异步电动机、定量泵、马达以及负载的数学模型。
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。
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。
Points for attention in the design and application of variable frequency and speed pump system have been proposed as well.
指出了变频调速泵送系统在设计和应用中的注意事项。
It is point out that loading LOX via variable speed pump can reduce throttle losses as well as can reduce the LOX temperature raise.
指出采用调速泵加注可以消除因节流引起的能量损耗，降低液氧的温升。
The configuration and variable frequency adjusting speed of water circulation pump in city heat-supply system are introduced, and the effects of energy saving are analyzed.
对城市供热系统中循环水泵的配置及变频调速进行了介绍，分析了其节能效果。
The system employs the variable speed regulation of electrically driven feed pump and the regulator valve to fulfill the control of water level.
该系统采用电动给水泵变速调节和调节阀共同完成水位控制。
The optimized operation of pumping station with variable speed drive (VSD)and the selection of number of pump-units in the station are discussed.
介绍变速泵站优化运行及变速泵机组最佳台数的选择。
And using the frequency variable adjusting speed technique to control the speed of benzole cooling pump automatically, to achieve the temperature stability of the benzole.
同时利用变频调速自动控制粗苯冷却泵的转速，实现粗苯温度的稳定。
The pumping unit supplying the tested models consists in one horizontal shaft centrifugal pump driven by a variable speed D. C. motor itself controlled by a thyristor speed drive.
供给水轮机模型试验的水泵由一个卧式离心泵组成，由一个整流器自控制的变速电机带动。
Taking the pump station of West-South Oil Product pipeline as an example, dynamic programming theory is adopted to settle pump running problem of the whole pipeline with speed variable pumps.
以西南成品油管道泵站为例，运用动态规划的原理，解决配有调速泵的管道全线开泵方案问题。
To this problem, the variable-frequency speed regulation and flow regulation split-ranging coordinated control of the centrifugal pump for energy saving is given.
离心泵的变频调速是目前广泛采用的流量调节方法，高效节能是其最大优点，但是当流量降低时，可能造成压头过低而影响后续流程。
A brief introduction of the variable frequency AC motor speed control features, pointed out that the centrifugal pump inverter transformation of the economy.
简单介绍了交流电动机的变频调速特点，指出采用变频器改造离心式水泵的经济性。
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。
Through the crank link system in high-pressured condition of variable speed movement with drilling pump power transfer.
在高压条件下，通过曲柄连杆机构的变速运动实现钻井泵动力的传递。
To settle the problem, a novel energy-saving motor used in screw pump was designed, and this motor could make efficiency of screw pump oil system improved and variable speed device decreasing.
为此，本文设计了螺杆泵用新型多星形移相变极电机，使得螺杆泵采油系统工作效率进一步提高，同时可以减少了变速装置。
The power consumption of variable speed heat pump loop and fixed speed heat pump loop are compared through calculation, on the basis that the spacecraft has the same heat load.
在保证航天器废热排放量的基础上，通过计算对比分析了固定转速热泵回路热控系统和变速热泵回路热控系统的耗电量，结果证明后者比前者节能20%左右。
Aimed at the conflicts of high speed, high precision and low noise, the improved design for structure joint ways of the motor and variable pump was proposed.
针对高速度、高精度和低噪声之间的矛盾，提出了对电机和泵联接方式的结构改进设计。
Aimed at the conflicts of high speed, high precision and low noise, the improved design for structure joint ways of the motor and variable pump was proposed.
针对高速度、高精度和低噪声之间的矛盾，提出了对电机和泵联接方式的结构改进设计。
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