variable pump

The variable pump makes the open loop gain change and decrease, the tracking control accuracy is difficult to be achieved by traditional feedback control A/ O cascade control. Effective compensation to the change of open loop gain can be achieved with micro-controller and compound control methods.

变量泵源导致系统开环增益下降和动态变化，传统的反馈控制和串联校正很难使此类系统跟踪精度达到要求应用复合控制方法，可以对开环增益变化进行有效补偿，提高跟踪控制精度。

Development and Performance Analysis of Two-stage Compression Variable Frequency Air Source Heat Pump

双级压缩变频空气源热泵系统及其性能分析

Two-way variable displacement hydraulic pump test-bed for power recovery uses constant pressure variable pump as the compensation pump for power recovery motor, and uses its function to adjust the system pressure.

功率回收方式双向变量液压泵试验台采用了恒压变量泵作为功率回收马达的补偿泵，并利用其功能调定系统压力。

The Improvement of Variable Pump Control Device for Charging Vehicle Hydrostatic System taximeter drive

装药车静液驱动系统变量泵控制装置的改进的士计程表传动装置

The inlet conduits in pump station are almost large volume and variable cross-section abnormal structures.

泵站进水流道多为大体积、变截面异型混凝土结构,施工中最常见的质量缺陷就是混凝土裂缝问题.

Theoretic research of the variable displacement pump and motor of the same width and with sliders, single-action, double-output and double-stators

等宽、滑块型、单作用、双输出、双定子变量泵和马达的原理研究

Volume-control force of variable pump experiment analysis

变量泵变量力的实验分析

Based on the investigation of behavior characteristic of subsystems, the dynamic mathematic models of variable pump, accumulator, low speed and high torque motor and relief valve are developed using power bond graph.

在对张紧器各子系统工作特性研究的基础上，利用键合图建模技术建立了变量泵、蓄能器、低速大扭矩马达和溢流阀等子系统的动态数学模型。

The double-acting variable-vane pump is a new type of variable pump.

双作用式变量叶片泵是一种新型变量泵。

Research on the Radial Force By Double Action Variable Vane Pump of Odd Number Vane

采用奇数叶片的变量双作用叶片泵径向力研究

Use of variable pump, the oil temperature is not high, and can substantially reduce water wastage.

采用变量泵, 油温不高, 能在很大程度上减少水资源的浪费.

Proportional Variable Pump System Used in Injection Molding Press

比例变量泵系统在注塑机上的应用

Thermodynamic Analysis and Research on Variable Mass System of Reciprocating Vacuum Pump

往复真空泵变质量系统热力学分析研究

Performance Analysis of 900 MW Unit Condensate Pump Variable Frequency Reformation

900MW机组凝泵变频改造性能分析

Application of Variable Pump to Hydraulic Servo System of Large-scale Injection Mold

变量泵在大型注塑机液压伺服系统中的应用

Research of Neural Network Control on Electro-hydraulic Proportional Complex Variable Pump

电液比例复合变量泵神经网络控制的研究

The improved digital variable displacement pump possesses such merits as strong antipollution ability, good repeatability, convenient interfacing with computer, and low cost.

改进后的数字变量泵具有抗污染能力强，重复性好，与计算机接口方便，价格低廉的优点；

Simulation and Study of Composite Hydraulic System with Frequency Control and Variable Pump

变频调速&变量泵复合调节液压系统仿真研究

It features high measuring accuracy and powerful data processing functions, together with computer controlled gear shifting and variable speed pump starting tests, which extends the application range of the test bench.

实现了检测试验台的自动化操作，测试精度高，数据处理功能强，还具备了计算机控制换挡和变速泵启动试验的功能，扩大了试验台的试验范围。

According to the motion index of the platform, the models of electro-hydraulic servo valve, constant force variable pump, servo pneumatic cylinder, displacement sensor etc are selected, the simplified schematic and installation drawing of hydraulic system of motion platform.

根据转台的运动指标，选取了电液伺服阀、恒压变量泵、伺服液压缸和位移传感器等的型号，完成了转台液压系统的原理图和实际安装图。

This paper analyses several kinds of probable hydraulic pump station type of XXJ300/ 500 hydraulic energy-storing workover rig, and points out that using variable pump is an economic and easy way of avoiding overfall loss.

该文从XXJ300500液压蓄能修井机的原理出发，探讨分析了该机可能的几种液压泵站形式，指出采用变量泵是一种经济、方便的避免溢流损失的方式。

Experimental Study on a Variable Capacity Heat Pump System with Ternary Mixture Refrigerants

三元混合工质用于变容量热泵系统的实验研究