At present, digital variable displacement axial piston pump has some problems.
目前，数字变量轴向柱塞泵还存在着很多问题。
A. Hydraulic pressure ADAPTS constant power variable axial piston pump for energy saving.
液压泵采用恒功率自动变量轴向柱塞泵，以节省能源。
Variable volume piston pump. Swash plate design allows for high efficiency and low noise.
该产品为可变容量柱塞泵。斜板的设计，高效率，低噪音。
The article analyzes that the constant pressure variable piston pump equipment allocated on the imported 922e LHD is not suitable for domestic using conditions.
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。
Hydraulic dive drilling pump adopts variable hydraulic pump and dynamic cylinder as its power end and its fluid end is identical with the triplex single acting piston pump.
液压驱动的钻井泵采用变量液压泵和动力油缸组成液压钻井泵的动力端；液力端和现在使用的三缸单作用活塞式钻井泵相同。
In order to compensate for the area deviation of differential cylinder and change the output flow of the pump, a program of parallel-type of three-window of variable axial piston pump was proposed.
为了补偿差动缸面积差和改变泵的输出流量，提出采用并联型三配流窗口的变量轴向柱塞泵方案。
The paper proposes a new method to realize constant power control for electrohydraulic proportional load-sensing radial piston variable displacement pump.
本文提出了对电液比例负载敏感径向柱塞变量泵实现恒功率控制的新的控制方法。
The main content is as follows: 1. The supporting way of the axial variable displacement piston pump is researched.
论文主要完成以下研究内容：1。对轴向变量柱塞泵的支撑方式进行了研究。
At the present, the key technology of the axial variable displacement piston pump is grasped by the foreign companies, the research and manufacture level in our country are on the elementary stage.
目前，轴向变量柱塞泵的关键技术掌握在国外公司手中，国内的研究、生产、制造均还处于初级阶段。
SCM C-51 as control core applied in the variable axial piston pump is introduced briefly in the paper, including work principle, hardware design concept, and main programmer diagram of digital pump.
文章介绍了作为控制核心的单片机C 5 1在数字泵中的应用，包括数字泵的工作原理，硬件的设计思路和主程序框图。
Zhou Lei. Research on Testing System of Variable Piston Pump [D]. Hangzhou: Zhejiang University, 2008.
周蕾。变量柱塞泵性能测试系统研制[D]。杭州：浙江大学，2008。
Zhou Lei. Research on Testing System of Variable Piston Pump [D]. Hangzhou: Zhejiang University, 2008.
周蕾。变量柱塞泵性能测试系统研制[D]。杭州：浙江大学，2008。
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