该文对三通比例流量阀控制的摆动气缸转角位置伺服系统进行研究。
A pneumatic rotary actuator angular position servo system is studied, which adopts 3-port proportional flow valve as a control device.
在电液比例流量阀中，本文采用了以单片机c 8051f 320为核心的控制技术。
This paper adopts the control technology of single chip C8051F320 core in electronic-hydraulic proportional flow valve.
综述了比例压力阀和比例流量阀国内外的研究进展，并且对比例阀未来的发展趋势进行了展望。
An over review of the proportional pressure valve and proportional flow valve at home and abroad is summarized.
在大型构件液压同步提升技术中，采用了计算机输出的脉宽调制信号作为电液比例流量阀的输入电流信号控制液压提升器的速度。
In hydraulic synchronizing lifting technology for oversize structure, computer output PWM signal as the input current of proportional valve is used to control the velocity of hydraulic cylinder.
系统中设有流量调节环节，电液比例调速阀在快挡可以缩短整个调平时间，在慢挡可以保证调平精度。
Equipped with flow regulator in system, electro-hydraulic proportional speed regulating valve can decrease leveling time in high speed gear, and ensure leveling accuracy in low speed gear.
这需要比例调节阀和流量测量形成的回路控制。
Flow is measured via an orifice plate metering run with a differential pressure transmitter providing feedback to the control loop.
本文介绍了通过控制比例溢流阀排油流量，控制执行机构运动速度和压力负载敏感的新方法。
A new load-sensing method to control the moving velocity and pressure of actuating mechanism by controlling the displacement of proportional overflow valve is introduced.
分别采用比例方向流量阀和比例溢流阀来实时控制输送带张力，并分别介绍了其工作原理。
The proportional direction valve and the proportional relief valve were adopted to timely control the belt tension and its working principles were introduce.
在电液比例阀和电液伺服阀动特性测试中，高频动态流量的测量一直是一个难题。
The measurement of high frequency dynamical flow in dynamical test of electro-hydraulic proportional valve and electro-hydraulic servo valve is very difficult.
美国临床肿瘤学会已成为一个产品的领导者与比例阀的最完整的路线，提供快速响应和一致的控制和流量的压力。
ASCO has emerged as a leader with the most complete line of Proportional Valve Products that provide fast response and consistent control of pressure and flow.
理论分析和实验结果表明：双喷嘴挡板电液伺服阀具有良好的流量-电流比例特性和小负载流量的控制能力。
Both the simulation and experimental results indicate that the dual flapper-nozzle servo valve has good flow-current characteristics and strong ability to control small flow rate.
该方法解决了电液比例方向阀稳态流量特性测试中保持阀压降恒定的问题。
The method solved the problem of invariable pressure difference when the valve was tested.
比例控制阀这类阀的输出量(流量、压力)可以按照输入信号的变化规律连续成比例地进行调节。
Proportional control valves such devices export volume (flow, pressure) can be imported in accordance with the law of change in the continuous signal proportional to regulate.
基于这种情况，本课题提出了基于负载自适应的流量伺服阀和电液比例溢流阀双阀反馈补偿控制方案。
So a new design scheme about double valve compensation feedback control system based on adaptive load is proposed.
理论上，如果有实用的动态流量传感器，用一控制阀口开度的电液比例节流阀，再配以压力和流星传感器就可控制这两个县。因目前还没有实用的动?。
With this new concept, the electro-hydraulic proportional valve that can control only pressure or flow has multifunction to control both pressure and flow-Two appplication examples are also presented.
于是在实际上比例阀可以同时作为方向阀和流量阀来使用。
So in effect the proportional directional valve is acting as both a directional valve and a flow control valve.
液压控制技术：液压方向、压力、流量控制阀、比例阀、球阀。
Hydraulic control technology: hydraulic direction, pressure, flow control valve, proportional valve, ball valve.
液压控制技术：液压方向、压力、流量控制阀、比例阀、球阀。
Hydraulic control technology: hydraulic direction, pressure, flow control valve, proportional valve, ball valve.
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