最后以恒压泵变量机构为实例，对YB - 20ah型柱塞式恒压主量泵变量机构进行了寻优设计，并取得了良好的效果。
Finally, taking the constant pressure pump as example, we make YB-20AH axial piston pump with constant pressure optimized by this method.
采用恒压变量柱塞泵，输出压力保持恒定，输出流量根据系统需要而变化。
Using constant pressure variables plunger pump, output pressure can keep constant and flow varies as per system's demand.
介绍了电反馈电液比例恒压变量泵的计算机PID控制。
The computer PID control for electro hydraulic proportional constant presure variable displacement pump with electric feedback is introduced.
径向柱塞变量泵可以采用手动控制、电液比例控制或负载敏感控制等多种控制方式，实现恒流量、恒压力、恒功率的控制。
The radial piston pump can adopt manual-control or electro-hydraulic proportional control to realize the control of constant flow, constant pressure, constant power and load sensitivity etc.
在恒压供水系统中，泵组的控制属于较大范围的自适应系统，泵组的平衡运行是自动调整系统运行参数的关键。
Control of pumps unit belongs to large-range self-adaptive system and it is the key for equipoise operation to operate parameter in auto-regular system.
通过继电器逻辑和变频器的泵控制功能实现了四种工作模式和恒压供水功能。
Four types of operation mode and isobaric water supply function by using relay logic and inverter's pump control function are realized.
文章对进口922e铲运机所配装的恒压变量柱塞泵不适合国内使用条件进行了分析。
The article analyzes that the constant pressure variable piston pump equipment allocated on the imported 922e LHD is not suitable for domestic using conditions.
所开发的多功能泵具有恒压力、恒流量、恒功率及压力流量复合控制等调节功能，有着广泛的工业实用性。
The multifunctional pump has many regulative functions, such as constant pressure, constant flow, constant power, and pressure-flow compound control, etc. It may be widely used in industrial field.
所开发的多功能泵具有恒压力、恒流量、恒功率及压力流量复合控制等调节功能，有着广泛的工业实用性。
The multifunctional pump has many regulative functions, such as constant pressure, constant flow, constant power, and pressure-flow compound control, etc.
概述了变频调速泵节能原理，针对高层建筑供水设施改造的实际情况，设计开发了一套射流泵辅助变频调速恒压供水系统。
A building water supply system in which jet-pump-aided and the inverter and PLC is used to realize the constant pressure of the water is inroduced.
这一特性和泵的恒压变量调节特性相类似。
The characteristic is similar to that of the constant pressure variable displacement regulation for the pump.
变量泵的控制方式有恒压力、恒流量、恒功率、电液比例和负荷敏感控制等。
Variable displacement pump's control style has many ways, such as constant pressure, constant fluid, constant power, electrohydraulic proportional and load-sensing etc.
多泵变频恒压供水常用的两种方案，比较了两种方案的优劣。
This paper compares two methods of realizing multi-pump constant-pressure water supply by an AC drive.
用该系统实行恒压供水取代传统的供水方式，不仅控制方便、灵活，还可省去高位水塔或直接加压的泵系统等；
The system can replace the traditional water supply mode, not only convenient and flexible in control, but also a high water tower or add to press directly of the pump system etc;
用该系统实行恒压供水取代传统的供水方式，不仅控制方便、灵活，还可省去高位水塔或直接加压的泵系统等；
The system can replace the traditional water supply mode, not only convenient and flexible in control, but also a high water tower or add to press directly of the pump system etc;
应用推荐