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.
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.
同时指出流量脉动系数最大的影响因素是油液的弹性模量和油泵的工作压力，其次是柱塞数。
Maximum influencing factors of flow fluctuation coefficient are the elastic modulus of the oil and the working pressure of the pumps, the piston number being a minor factor.
螺杆泵特点是：流量平稳，压力脉动小，能够自吸，噪声低，效率高，使用寿命长，工作可靠。
Screw pump features are: smooth flow, small pressure fluctuation, imbibition, low noise, high efficiency, long service life and reliable operation.
本文在分析齿轮泵的流量脉动和压力脉动的基础上，设计出一种错齿齿轮泵。
The interlaced gear pump is designed on the basis of analysing flow and pressure pulses.
它的最大特点是对介质的适应性强、流量平稳、压力脉动动小、自吸能力高，这是其它任何泵种所不能替代的。
It is characterized by a strong adaptability to the media, smooth flow, pressure pulsation, small, high self absorption capacity, which is not a substitute for any other pump.
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.
液压管路内的流量和压力脉动问题，是一个复杂而又难以解决的问题。
The flow rate and pressed pulsation in the pipe of liquid pressure is a such a complicated problem that it is hard to solve.
并以一台较大排量的轴向柱塞泵为被试泵，建立了流量脉动测试系统，实现了多种压力下被试泵流量脉动的测试。
An axial piston pump with large displacement has been used as the pump under test, a measurement system has been put forward and flow ripples at different pressures have been determined.
针对飞机地面压力加油管路系统通向油箱的管路压力脉动现象，本文提出一种新的实时主动流量控制方法。
Aimed at the pressure transient of the aircraft refueling pipeline, a new real time flow control method based on the traditional passive accumulator is presented in this paper.
齿轮泵中轮齿啮合几何学上的原因所造成的流量脉动及其相应的压力脉动是产生噪声的主要原因之一。
The operating noises of the gear pump are mainly from the perturbations of mass flow rate and the pressure, which result in the error of gear teeth geometry contact during the rotation.
阀式变量泵具有理想的静态流量压力特性，实验发现在高压变量区具有较强的流量脉动甚至脉冲现象。
Pretty flow pressure characteristics are being realized in the variable displacement pump with valve adjuster. But more violent flow pulse was proved by experiment at the range of higher pressure.
本文通过对齿轮泵产生流量（压力）脉动的主要原理和影响因素进行分析，从而得到减小齿轮泵流量（压力）脉动的方法。
The main reason of these perturbations and its affecting factors were investigated and analysed, and a general methodology of perturbations reducing was developed.
齿轮泵结构简单紧凑，制造容易，维护方便，有自吸能力，但流量、压力脉动较大且噪声大。
Gear pump structure simple compact, the manufacture is easy, to maintain conveniently, has the self-absorption ability, but current capacity, pressure oscillation the noise and is greatly big.
齿轮泵结构简单紧凑，制造容易，维护方便，有自吸能力，但流量、压力脉动较大且噪声大。
Gear pump structure simple compact, the manufacture is easy, to maintain conveniently, has the self-absorption ability, but current capacity, pressure oscillation the noise and is greatly big.
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