Hydraulic System Research of the Pumping Unit Based on Electro-Hydraulic Proportional Control Technology

2013 ◽  
Vol 373-375 ◽  
pp. 1340-1344 ◽  
Author(s):  
Lin Jiang Chang ◽  
Shu Zhong Lin ◽  
Hong Wu Zheng
Keyword(s):  
Mathematical Model ◽  
Hydraulic System ◽  
Control Technology ◽  
Current Signal ◽  
System Research ◽  
Unit Load ◽  
Running Speed ◽  
Proportional Control ◽  
Working Principle ◽  
Pumping Unit

Trapezoidal curve is selected as the hydraulic pumping unit load running speed curve. Designed a new hydraulic system of hydraulic pumping unit according to the electro hydraulic proportional control technology and then expounded its working principle, in which the electro-hydraulic proportional directional throttle valve have been used. The system is feasible on the theory by analyzing its mathematical model. It would meet the requirement of hydraulic pumping unit and realize the advantages of it via controlling the input current signal of the amplifier.

Design of Hydraulic System of Sway Machine Based on Electro-Hydraulic Proportional Control Technology

2012 ◽  
Vol 510 ◽  
pp. 34-38
Author(s):  
Yun Li ◽  
Jin Wei Fan ◽  
Xing Li Gao ◽  
Xiao Feng Wang
Keyword(s):  
Hydraulic System ◽  
Production Efficiency ◽  
Control Valve ◽  
Control Technology ◽  
Variable Speed ◽  
Motor Speed ◽  
Hydraulic Motor ◽  
Proportional Control ◽  
Improve Design ◽  
Automatic Adjustment

According to the problems of hydraulic system of sway machine, such as commissioning and maintenance are inconvenient, impact of change direction is big, system speed is slow, production efficiency is low, etc. It used electro-hydraulic proportional control valve to improve design in hydraulic system of sway machine. Application of electro-hydraulic proportional control valve has realized automatic adjustment of the hydraulic motor speed; it is effective to solve variable speed movement of sway machine frame and no impact of changing direction smooth. Commissioning and maintenance of sway machine are more convenient, and it improves performance of sway machine.

Design and Study on the Automatic Extrusion Device for Curved Chassis of Vibratory Feeder

2012 ◽  
Vol 198-199 ◽  
pp. 1298-1301
Author(s):  
Liang Han ◽  
Jia Li ◽  
Lei Xiang Zhang
Keyword(s):  
Hydraulic System ◽  
Experimental Studies ◽  
Control Unit ◽  
Control Technology ◽  
Proportional Control ◽  
Vibratory Feeder ◽  
Potential Benefits ◽  
Bowl Feeder ◽  
Vibratory Bowl Feeder ◽  
Micro Control Unit

Vibratory feeder is a device which is used to arrange small workpieces in neat rows and convey them from one place to another by vibratory feeding. It has been playing a key role in automation production. According to manufacturing equipments for the chassis of vibratory bowl feeder, this paper makes studies mainly in the followings: (1) introduces the principle of the vibratory feeder briefly, (2) the mechanical structure of the automatic extrusion device for curved chassis of vibratory feeder is designed, including frame, moulds and guiding mechanism, (3) static analysis, mould stress analysis are done by using the finite software ANSYS, (4) based on the electro-hydraulic proportional control technology, a hydraulic system is designed, (5) a control system based on STC89C52RC MCU(Micro Control Unit) is given. The problems of automatic extrusion for the curved chassis of vibratory feeder are successfully solved through the theoretical and experimental studies, which achieves the expected design goals and fills in a gap in this field in China, which brings great economic and social potential benefits and has wide application prospect.

Design of the Hydraulic System for Carrying Manipulator with 6-DOF

2014 ◽  
Vol 989-994 ◽  
pp. 2802-2806
Author(s):  
Min Wang ◽  
Cai Dong Wang ◽  
Hui Zheng ◽  
Guo Feng Fan
Keyword(s):  
Mathematical Model ◽  
Hydraulic System ◽  
Degrees Of Freedom ◽  
Assembly Line ◽  
Industrial Robot ◽  
Structural Parameters ◽  
Hydraulic Cylinder ◽  
Six Degrees Of Freedom ◽  
Output Force ◽  
Working Principle

According to the requirements for wheel hub assembly line, the structure and hydraulic system of carrying manipulator with six degrees of freedom (DOF) is designed. The working principle of the hydraulic system is analyzed. To minimize the output force of the hydraulic cylinder, a mathematical model of hydraulic cylinder output force and structural parameters is established. And then the manipulator structure is optimized based on Matlab software. The key components of the hydraulic system are selected. This research provides reference for design of similar hydraulic system of industrial robot.

Simulation and Experimental of Shifting Performance of Construction Machinery

2014 ◽  
Vol 889-890 ◽  
pp. 998-1002
Author(s):  
Feng Ren ◽  
Xin Hui Liu ◽  
Jin Shi Chen ◽  
Ping Zeng ◽  
Bo Liang Liu
Keyword(s):  
Mathematical Model ◽  
Simulation Model ◽  
Experimental Verification ◽  
Hydraulic System ◽  
System Simulation ◽  
Performance Characteristics ◽  
Construction Machinery ◽  
Working Principle ◽  
Pressure Changes ◽  
Amesim Simulation

The main objective to study shift buffer impact of shifting process of construction machinery.introduces the working principle of main valve and wet multi-clutch,and developing a mathematical model and AMESim simulation model. analyzes the characteristics of pressure changes during the shift, buffering characteristics and impact on the performance characteristics, and experimental verification. The results showed that: the shift hydraulic system simulation model accurately credible; good performance of the system can effectively reduce shift jerk.

scholarly journals Mathematical modeling and experiment for hydraulic ejecting system of ceramic brick press

2021 ◽  
Vol 2079 (1) ◽  
pp. 012026
Author(s):  
HongBo Zheng ◽  
MingJun Li ◽  
QingQing Bian
Keyword(s):  
Mathematical Modeling ◽  
Mathematical Model ◽  
Theoretical Basis ◽  
Hydraulic System ◽  
Experimental Results ◽  
Ceramic Brick ◽  
Working Principle ◽  
The Mathematical Model

Abstract Taking the ejecting system of hydraulic system of 7200t ceramic brick press as the research object, the basic constitution and working principle of the hydraulic ejecting system are described, and its mathematical model is established and calculated. In order to verify the accuracy of the mathematical model, the experiment was carried out, and the experimental results were compared with the calculated according to the mathematical model. The two results were basically consistent, indicating that the mathematical model is accurate, and providing a theoretical basis for further research on the ceramic brick press.

Simulation and Research of New MW Wind Turbine Yaw Hydraulic System Based on AMEsim

2014 ◽  
Vol 536-537 ◽  
pp. 1621-1624 ◽  
Author(s):  
Li Wen Yan ◽  
Cun Jin Ai ◽  
Hui Xie
Keyword(s):  
Wind Turbine ◽  
Hydraulic System ◽  
Kinetic Equations ◽  
Shaft Speed ◽  
Current Signal ◽  
Motor Shaft ◽  
Proportional Valve ◽  
Working Principle ◽  
Valve Control ◽  
Signal Action

This paper presents a new MW wind turbine yaw hydraulic system,and describes the working principle of the hydraulic system,derives kinetic equations of the electromagnetic proportional valve and the motor in the hydraulic circuit,uses AMEsim to establish a simulation model of the electromagnetic proportional valve control motor hydraulic system,sets parameters of main elements of the model,and simulates.given under the input current signal action,derives yaw motor shaft speed and time graphics,and analysis.

The Electro-Hydraulic Proportional Technology-Based Experimental Research into Gradually Pressurization System on Cotton Lap of Roll Machine

2012 ◽  
Vol 605-607 ◽  
pp. 1301-1306
Author(s):  
Jian Qiang Yu ◽  
Jian Chang Yuan
Keyword(s):  
Experimental Research ◽  
Design Concept ◽  
Control Technology ◽  
Compact Structure ◽  
Proportional Control ◽  
Working Principle ◽  
Pressurization System ◽  
Effective Function

This paper discussed two types of traditional pressurization system on cotton lap of roll machine—mechanical and pneumatic, analysed their working principle, put forward a new design concept, with compact structure, based on the electro-hydraulic proportional control technology and tested with experiments. The results showed its effective function to control pressure stably.

Design of Synchronous Machine Model Based on PRO/E and Dynamic Simulation

2012 ◽  
Vol 246-247 ◽  
pp. 1220-1225
Author(s):  
You Kun Zhong
Keyword(s):  
Mathematical Model ◽  
Dynamic Simulation ◽  
Three Dimensional ◽  
Transmission System ◽  
Synchronous Machine ◽  
Dimensional Model ◽  
Transmission Performance ◽  
Three Dimensional Model ◽  
Machine Model ◽  
Working Principle

With the increasing of the number of cars, people are also getting higher and higher demands on the performance of the car, and especially pay attention to the improvement and optimization of automobile transmission system. The transmission is a key part of automobile transmission system, and transmission performance and stability depend on the synchronous machine, so in order to make the vehicle transmission system with higher efficiency, it is necessary to study the synchronous machine. On the basis of elaborating synchronous machine working principle, the use of dynamics theory to establish mathematical model of synchronous machine system, and to carry out the simulation of synchronous machine three-dimensional model in PRO/E environment, then the use of virtual prototype technology to optimize the parameters of synchronous machine, thereby improving the performance of synchronous machine.

scholarly journals Simulation of dynamics of hydraulic system with proportional control valve

2016 ◽  
Vol 114 ◽  
pp. 02008 ◽  
Author(s):  
Adam Bureček ◽  
Lumír Hružík ◽  
Martin Vašina
Keyword(s):  
Hydraulic System ◽  
Control Valve ◽  
Proportional Control
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