According to the different hydraulic control components, hydraulic control technology include two kinds of valve and pump control.
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2. 泵控容积调速系统中负载发生变化时，要保证马达输出转速恒定。
When the load of pump control cubage timing system changes, the motor output speed must be kept steady.
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3. 泵控变量液压系统，与电比例操作系统紧密结合，节能高效，控制精确。
The pump controlled variable displacement hydraulic system works together with the electronic proportional control system, high efficiency, energy saving and precise control.
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4. 本文对双闭环泵控式速度控制系统提供了一种简便而有效的分析方法及校正设计。
This paper advances a simple and effective analytic method and compensating design for the velocity control system of a double closed loop pump control.
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5. 因此对工程机械行走驱动泵控马达闭式回路系统及关键液压元件开展研究将有重大意义。
Therefore the research of pump-control-motor closed-circuit for mobile hydraulics driving system and key hydraulic components will have great significance.
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6. 结合整机plc和CAN总线控制的电比例泵控液压系统是现代大型流动式起重机主要的传动控制形式。
Electric proportional pump-control hydraulic system controlled by PLC and CAN bus is the main format of driving control for modern heavy mobile cranes.
In this paper, the principle of variable speed pump control hydraulic differential cylinder is designed, and the simulation model of system is built, and the simulation research is carried out.
Simulation analysis was carried out for the variable speed pump-control-motor hydraulic system. Mathematic models of inverter, asynchronous motor, fixed pump and load were set up.
In view of the result of simulation, LQR regulation is excellent to the PID control system, LQR regulation accuse as velocity steady controlling in the pump-controlled motor system is better.
Two design strategies that three-way valve control unsymmetrical cylinder and four way valve control symmetrical cylinder were analyzed from principle and system structure aspects.
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11. 容控箱收集净化、过滤后的下泄流，同时它给上充泵提供净正吸入压头。
The volume control tank collects the purified, filtered letdown fluid and provides a suction reservoir and head for the charging pumps.
Painting Line:The system is arranged with painting room, up and down spraying cars, conveyor, height measuring system, gas controlling system, high pressure none air spraying pump and pipes.
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13. 试验研究结果表明，前馈自适应控制是实现变量泵源阀控系统高精度跟踪控制的有效方法。
The tests results show that the controller is the effective control method for the variable pump & valve controlled system.
Furthermore, a simple adjustable current cell in the charge pump is proposed for additional stability compensation and a novel VCO with linear gain is adopted to limit the total variation.
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15. 液压系统可以采用液控单向阀、蓄能器、液压泵等多种形式实现保压。
A single - direction valve controlled by liquid, an accumulator and hydraulic pumps can be used to keep pressure in hydraulic systems.
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16. 利用阀控泵-马达同步系统可以保证旋压机两个旋轮的同步精度，以保证旋件的质量。
The synchro accuracy of two spinning wheels of spin forming machine can he obtained by using the synchro system of valve controlled pump-motor, therefore the quality of workpiece is ensured.
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17. 同时介绍了基于PLC可编程控制器应用于离子泵电源的启动和过流保护的远控系统。
The features of the BEPCII linac vacuum system are described, with the remote monitoring system used in the process of ion pump power starting to normal operation and overflow protection based on PLC.
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18. 副司钻练习倒换泥浆泵、远控近控和修理泥浆泵等。
The assistant drillers practiced mud pump changing, remote and locate control together with the repair of the mud pump etc.
Zhuji City, Jian-Ling Machinery Factory is a company specialized in production of auto parts such as manual valve, master cylinder, relay valve, clutch booster, air dryer and spring brake chamber.
This paper had reported the application of venous complex anesthesia with target control during 163 cases of humping breast under PC 2000 monitor injected with pump.
At present, electronic power steering and brake-by-wire has a number of European models have been used in this system has been reduced a lot of mechanical parts such as hydraulic pumps and so on.
At present, electronic power steering and brake-by-wire has a number of European models have been used in this system has been reduced a lot of mechanical parts such as hydraulic pumps and so on.
