This paper analyzes the characteristics of hydraulic loop system of rolling mill.
本文对轧机液压活套系统的工作特性进行了分析。
A hydraulic loop of digging machine was selected as an example, the feasibility of the method was validated.
以挖掘机液压回路为例，验证了所提方法的可行性。
It has the higher switching speed and frequency and can be used as the pilot valve for a larger flow rate valve, or as a direct control valve for small flow rate hydraulic loop.
该阀具有很高的切换速度和频率，可以用来作为大流量高速开关阀的先导控制阀，也可以在小流量回路中直接作为控制阀使用。
The relief valve and the pipeline are both important components of the hydraulic system, and that system including of relief valve and pipeline and constant pump is the basic loop of it.
溢流阀和管道都是液压系统的重要元件，而溢流阀、管道和定量泵组成的系统又是液压系统的基本回路。
This paper introduces an electrohydraulic control system based on PLC. A double close - loop control system with electro - hydraulic proportional valve is adopted.
一种基于PLC的电液自动控制系统，采用了电液比例阀的双闭环控制系统。
Structure, principle, characteristic of series cylinders with compensation in new synchronous loop as well as application of such in cutting machine's hydraulic system have been introduced.
介绍了几种带补偿措施的串联液压缸的新同步回路的结构、原理、特点及其在剪板机液压系统中的应用。
Hydraulic counterbalance valve is a key element in the hydraulic balanced loop, which is applied abroad in modern engineering mechanism especially in elevating machinery.
液压平衡阀是平衡回路中的关键元件，在现代工程机械特别是起重运输机械中应用广泛。
ZWB222 series hydraulic balance valve for finishing hydraulic balance during all offshoot loop of one system.
ZWB222系列水力平衡阀用于完成一个系统中各分支回路间的水力平衡。
At the same time, the thesis design all hydraulic pressure system loop and checking computation the pressure losing in pipeline system, the changing temperature of hydraulic pressure system.
同时，本文对整个液压系统回路进行了设计及其对管路系统压力损失、液压系统的温升进行了验算。
The close-loop system has obtained satisfactory control results in the experiment using a hydraulic mock circulatory system for the artifitial heart.
控制系统的性能在循环系统水力学模拟台上做了试验，取得了满意的效果。
It is the typical and key hydraulic component in every lifting hydraulic pressure loop with open-type System.
是各种开式系统起重液压回路典型而关键的液压元件。
This paper study and design its hydraulic power control system and introduces the tool's automatic down hole closed loop of control principle and ways.
对工具内部的液压控制原理及控制回路进行了研究和设计；
Among three projects, the hydraulic pressure loop is designed and the dynamic simulation for piston reclaiming process is performed with MATLAB program.
就三种回收方案中，对液压回收方案的液压回路进行了设计，并用MATLAB程序对活塞回收过程进行了动态仿真。
Based on the analysis to close loop hydraulic system of hydraulic hammer, this paper provides on open loop hydraulic system.
本文对液压锤使用的闭式液压系统性能进行了分析，在此基础上提出了泵直接传动的开式液压系统。
It is used in flexible and amplitude loop in the hydraulic mobile crane, especially suitable in the case of heavy area ratio between non-pole cavity and pole one.
用于液压汽车起重机变幅与伸缩油缸回路，特别适用油缸两腔面积比较大的场合。
Based on the continuous casting device in the laboratory of our school, the theory of robust control is applied to position loop system driven by hydraulic servo.
本课题针对我校实验室结晶器连铸装置，将鲁棒控制理论应用于液压驱动伺服位置环系统的研究开发。
By the use of software EASY5, the electro-hydraulic proportional system of position close-loop is modeled and simulated, which provided the controlling parameters for experiment.
利用EASY5仿真软件对组合阀组成的电液比例位置闭环系统进行动态建模仿真分析，为实验提供了控制参数。
This paper deals with a closed-loop digital control for a hydraulic valve, controlled motor speed system.
研究了用位总线微机构成的液压阀控马达速度闭环数字控制系统。
First, analysis and explain that DGN hydraulic load controller's principle. Then analyze dynamic speciality in closed loop of DGN hydraulic load controller.
文章首先介绍DGN液压加载控制器的原理，然后对DGN液压加载控制器闭环动态控制特性进行了的分析。
This paper introduces the technique that realizes optimal electro-hydraulic position servosystem by the loop technique and the means of pressure feedback.
本文介绍了利用环路法和压力反馈实现最佳电液位置伺服系统的方法。
This method is applied to hydraulic distribution calculation of loop pipe network, and the results are finer.
把该算法用于环状管网水力平衡计算，计算结果精度较高。
The platform with digital cylinder avoids lots of hydraulic servo parameter adjusting devices and A/D, D/A data conversion devices. Therefore it can be regarded as an open loop control for developers.
该平台采用新型数字液压缸，其控制不需外部A/D、D/A转换，同时减少了大量的液压伺服参数调节装置，对控制者来说完全是一种开环控制。
Hydraulic pumps from Parker are available in high pressure or low pressure varieties for a wide range of open loop or closed loop applications.
从派克液压泵是应用程序可在高压或闭环或开环压力低的品种，适用范围广的。
In this paper, the structural characteristics, parameters calculation, performance analysis, open loop hydraulic system with integrated plug in valves and PLC control system are presented.
介绍了该新型程控液压模锻锤结构特点、参数计算、性能分析、插装阀集成开式液压系统和PLC程序控制系统。
The hydraulic shock in the closed loop did not occur when the swash plate commutated and it actually happened when the concrete was pushed forward after compression.
得出了闭式系统压力冲击并不是发生在主油泵快速换向的过程，而是发生在混凝土快速压实后推进的时刻。
A dynamic simulation tool, SIMULINK software package in MATLAB, is taken as the development tool, and applied in the dynamic response computation of the hydraulic servo closed-loop control system.
以MATLAB中动态仿真工具SIMULINK软件包为开发工具，将其应用于该液压伺服闭环控制系统的动态响应计算中，针对上述两种闭环控制系统，给出了考虑干扰量情况下的SIMULINK仿真方法。
Position closed-loop control was used to control the position of servo hydraulic cylinder to improve control accuracy.
在位置闭环控制中比例伺服阀控制伺服缸，解决了控制精度低的问题。
Finally, analysis speed-loop of variable frequency drive crumb cake hydraulic machine.
最后，分析了变频调速液压屑饼机的调速回路。
The hydraulic system of the same closed-loop control mode that has the characteristics of high accuracy;
液压系统使用闭环控制的等同方式的精度高；
The hydraulic system of the same closed-loop control mode that has the characteristics of high accuracy;
液压系统使用闭环控制的等同方式的精度高；
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