改造后的液压系统流量充分、压力稳定、动作迅速，且调整和维修保养方便，故障率低。
The transformed hydraulic system has abundant flow capacity, stable pressure, swift motion and low failure rate and it is convenient to adjust and maintain.
本文分析了液压系统流量、压力脉动与噪声的关系，对系统的流体噪声产生与传播进行了一些探讨；
This paper has analyzed the relationship of flow, pressure pulsation and noise in hydraulic system, and has inquired into generation and propagation of fluid noise in the system.
液压系统采用了先进的二通插装阀系统、进口高性能的电子泵技术，实现了主缸压力与流量的双闭环控制；
The press takes use of advanced two-way cartridge valve system and imported electric pump technology which can realize double closed loop control of pressure and flow rate.
发数字式流量阀采用数字控制方式，调节系统流量以达到液压系统调整目的。
The digital flow rate valve regulates digitally system flow rate to implement speed regulation in hydraulic system.
设计了一种基于压力流量复合控制的盾构推进液压系统。
A thrust hydraulic system of shield tunnelling machine integration of pressure and flow control was designed.
对数控液压系统及数字阀作了理论上的探讨。并着重对作者近年来研制的一种新型高压大流量直接式数字溢流阀，进行了理论分析、数字仿真以及试验研究。
This paper discusses the basic theory of digital valves and digital hydraulic systems and focuses on the high pressure, large flow direct digital relievers which have been developed recently.
该文介绍了一种新型的数字式液压操纵系统，系统采用并联方案，以高速电磁阀为先导控制级，通过双节流阀进行操纵系统的压力、流量控制。
It is a parallel connection system and this system USES the high-speed valve as a pilot valve to control the twin throttle which controls the pressure and the flux of the hydraulic control system.
广泛用于汽车起重机上车液压系统的控制回路，适用于小流量、低压力回路的控制油液的开关阀；
Widely used in control circuits of upper hydraulic systems on truck cranes, applicable to switch valves of control oil with low flow and low pressure circuits.
变频驱动液压复合控制系统的流量补偿研究。
The flux compensation research of variable frequency hydraulic compound control system.
液压机快速大流量液压系统的无级调速是一个有待解决的技术问题。
The stepless speed of press hydraulic system with rapidly high flow is a difficult and challenging problem.
在注塑机液压系统中，要求能在注塑油缸运动的过程中对其进行速度控制和在保压过程中进行压力控制。 这就需要用到压力-流量复合阀来进行压力和流量的控制。
The hydraulic system of injection molding machine is the representative example, it need to control cylinder speed and hold pressure, so it indeed to use pressure and flow rate multiple valve.
文章还就溢流阀加载的液压系统，溢流阀与液压泵流量的匹配以消除多余力干扰提出了自己的看法。
This paper also put to remove extra force turbulence by valve in concert with pump in the relief valve-loading hydraulic system.
这种测量装置为进一步研究液压元件、系统的动特性，并为开发新的瞬态流量计提供了重要的测试手段。
This provides an important measuring means for studying the dynamic characteristics of hydraulic elements and systems and for developing new instantaneous flowmeters.
车辆液压动力转向系统通过伺服阀控制压力油的方向和流量，把转向盘输入的转角信号转变为车轮的偏转角度输出。
Vehicle power steering systems control direction and flow of pressure oil with servo valves, then transfer angular inputs from steering wheels to corner angular outputs of road wheels.
通过对工作面端面冒顶原因及支护系统的分析得出，加大液压支架的流量可以加快移架速度，降低冒顶事故率，提高生产效率。
Analysing the roof-fall cause of end face and support system, an effective way to reduce roof fall sensitivity and improving production efficiency are pointed out.
本系统使用最简单的轴流类滑套作为流量控制阀，用以封堵、隔离和选择油层，并采用全液压方式进行动作控制。
The system uses the simplest axial-flow sleeve as flow control valve to blank off, isolate and select reservoir. The system adopts all-hydraulic operation.
液压系统中阀门(换向阀等)突然关闭时，液压泵的流量脉动频率和管道的基本频率相互作用，可能发生谐振。
In hydraulic transmission system, the pump's flow pulse frequency and the pipes base frequency affects each other, if the valves shut suddenly, resonance oscillation may take place.
作者研制的动态流量计是国内流量控制系统中所缺乏和急需的器件，已成功地应用在国产液压电梯流量反馈控制样机上。
This type of flow sensor is widely needed in the flow control systems and has been successfully used in the home-produced prototype hydraulic elevator with flow electrical feedback control system.
设计了一种基于压力流量复合控制的盾构推进液压系统，对液压缸进行了分组控制。
A thrust hydraulic system of shield tunnelling machine with pressure and flow compound control was designed, and hydraulic cylinders were also controlled in groups.
为了对液压设备中的速率、压力、流量等参数进行在线检测，我们自行设计了一套液压工程综合采集系统。
A integration collection system of hydraulic engineering system is developed in order to check on line the parameters such as velocity, pressure, flow-detecting and so on in hydraulic facilities.
降低液压机空载时液压系统中大部分能量损失可通过减小空载环流流量的途径实现。
Reduction of energy losses in hydraulic circulation of a hydraulic machine when its running idle can be brorght about by lowering the no-load circulatory flow rate.
皮囊式蓄能器在液压系统中用于均衡系统的流量，稳定系统的压力或回收系统的能量。
The bladder accumulator is used in the hydraulic system for balancing the flow of the system, stabilizing the pressure of system or recovering the energy in the system.
压力和流量根据系统需要匹配，实现了最大程度的节能，改进的电动液压抓斗具有以下优点。
The pressure and flow capacity can accommodate themselves to the system requirements, so as to conserve the energy to the maximum extent.
提出了液压泵流量脉动测试的实用近似方法，对液压柱塞泵流量脉动的测试技术进行了系统的试验研究。
The paper describes an overall experimental research on the techniques for measuring the flow ripples of hydraulic piston pumps, according to the practical method for measuring pump flow ripples.
本文对液压系统中的流量压力脉动源一液压泵的频域数学模型作了研究。
A hydraulic pump is considered as a pressure and flow ripple source for the hydraulic system, and its mathematical model in frequency domain is studied.
液正系统工作，必须对油液压力、流量、方向进行控制与调节，以满足工作部件在力、速度和方向上的要求。
Liquid system is the need for oil pressure, flow, direction control and regulation to meet the needs of working parts in the power, speed and direction requirements.
流量、压力是反映液压系统状态的主要参数，是液压系统故障诊断的基础。
Flux and pressure parameters which hold the state information of hydraulic system, are the foundation of fault diagnosis.
这种系统不是靠改变泵的排量而是靠改变泵的转速来改变其输出流量，从而实现对液压系统的控制。
This hydraulic system is controlled by different pump's flux, which is realized by changing the speed of pump, instead of changing pump's displacement.
大型液压泵站由于流量脉动往往引起大的压力波动，这是造成液压系统噪声的主要原因之一。
The large undulation of pressure at the large-scale hydraulic pump station is usually caused by the pulsating of flow. It's one of essential causes to produce noise in the hydraulic system.
大型液压泵站由于流量脉动往往引起大的压力波动，这是造成液压系统噪声的主要原因之一。
The large undulation of pressure at the large-scale hydraulic pump station is usually caused by the pulsating of flow. It's one of essential causes to produce noise in the hydraulic system.
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