Research on the Dynamic Characteristics of Master Cylinder in the Hydraulic System on Concrete Pump

2011 ◽  
Vol 317-319 ◽  
pp. 2398-2403 ◽  
Author(s):  
Hai Bo Xie ◽  
Shu Yong Lin ◽  
Hua Yong Yang ◽  
Yu Zhen ◽  
Jin Zhang
Keyword(s):  
Hydraulic System ◽  
Open Circuit ◽  
Simulation Software ◽  
Design Parameters ◽  
Hydraulic Control ◽  
Master Cylinder ◽  
Simulation Results ◽  
Concrete Pump ◽  
The Relationship ◽  
Hydraulic Control System

Currently when the domestic concrete pump is pumping, the piston of master cylinder may hit the cylinder or not travel enough displacement; the travelling rules in different conditions have been not found yet. In this paper, an open circuit hydraulic control system is researched by simulation software AMESim, pumping circuit and dividing circuit of the system are modeled and simulated. The simulation results are compared with experimental results to illustrate the accuracy of the modeling. Then the relationship between travelling displacement of the piston and the factors, such as location of trigger port, different diameter of damping u-tube, is analyzed. In the end, a set of reasonable design parameters of the hydraulic system is proposed.

Internal leakage analysis and experiment in hydraulic control system of steam turbine inlet valve

2020 ◽  
pp. 095440892097311
Author(s):  
Ying Liu ◽  
Qimin Wang ◽  
Xiaoxiao Li ◽  
Liming Wang
Keyword(s):  
Control System ◽  
Steam Turbine ◽  
Simulation Software ◽  
Hydraulic Control ◽  
Inlet Valve ◽  
Proportional Valve ◽  
Hydraulic Simulation ◽  
Turbine Inlet ◽  
Control Switch ◽  
Hydraulic Control System

In this paper, the transformation of steam turbine regulating system from mechanical hydraulic regulation to electro-hydraulic regulation is realized. And the internal leakage mechanism of the hydraulic control switch valve and the electro-hydraulic proportional valve in the system is analyzed. With the use of hydraulic simulation software AMESim, the mathematical model of the electro-hydraulic control system after transforming is established. The parameters of the hydraulic control switch valve and the electro-hydraulic proportional valve in the hydraulic control system of steam turbine inlet valve are studied under different internal leakage locations and different leakage degree, such as piston regulating time, steady position of piston, oil pressure and leakage flow flux. The fault characteristic table of internal leakage is obtained. An experimental platform for simulating internal leakage is built. The experimental curves of several physical quantities under different internal leakage conditions are obtained. The experimental results prove that the internal leakage has a great impact on the performance of the electro-hydraulic control system. The results of internal leakage experiment are consistent with those of internal leakage simulation.

Simulation Study of the Hydraulic System of Concrete Pumping Truck Based on AMESim

2012 ◽  
Vol 170-173 ◽  
pp. 1920-1925
Author(s):  
Chang Ge Fan ◽  
Fa Lin Zeng ◽  
De Hua Li ◽  
Lei Liu
Keyword(s):  
Simulation Study ◽  
Hydraulic System ◽  
Hydraulic Cylinder ◽  
Hydraulic Shock ◽  
Buffer Effect ◽  
Concrete Pumping ◽  
Working Principle ◽  
Simulation Results ◽  
The Relationship ◽  
Buffer Structure

The working principle of concrete pumping hydraulic system was analyzed. And base on the AMESim software, the complete simulation model of concrete pumping hydraulic system was built. A simulation was made to get the dynamic characteristics curve of hydraulic cylinder velocity and displacement at some specific conditions. The simulation results indicate that the model is reasonable. Comparative simulations of the pumping hydraulic system with different positions of buffer structure were carried out to study the relationship between buffer effect and the buffer position which can be used to provide theory basis for deeper study of the hydraulic shock.

The Kinematic and Dynamic Analysis of Hydraulic Control System Based on the Lagrangian Force Method

2018 ◽  
Vol 15 (05) ◽  
pp. 1850041
Author(s):  
Thi-Na Ta ◽  
Cao-Sang Tran ◽  
Yunn-Lin Hwang
Keyword(s):  
Control System ◽  
Dynamic Analysis ◽  
Hydraulic System ◽  
Lagrange Equation ◽  
Control Parameters ◽  
Hydraulic Control ◽  
Hydraulic Systems ◽  
Dynamical Parameters ◽  
Characteristic Effect ◽  
Hydraulic Control System

In this paper, the hydraulic control system design and dynamic analysis are considered in superior calculation efficiency based on Lagrangian method and fundamental laws for getting control algorithms to investigate about hydraulic system how to control hydraulic system and take hydraulic controller to the optimization. The systems built in dynamical parameters are associated hydraulic control system achieved with control parameters. And then, an interface is achieved. The relations between control parameters are obtained. The numerical tools are going to determine all kinematic parameters of bodies such as displacement, velocities, accelerations as well as reaction forces are responded. The AMESim and RecurDyn are used such Computer Aided Engineering (CAE) techniques to solve the numerical examples in this paper. Those examples will imply that the equation of motion based on Euler–Lagrange equation and characteristic effect of force is executable. Through results, we could achieve control improvement at different hydraulic systems.

Analysis of Construction Machinery Hydraulic Control System

2013 ◽  
Vol 401-403 ◽  
pp. 1590-1595 ◽  
Author(s):  
Li Zhang
Keyword(s):  
Power Control ◽  
Hydraulic System ◽  
Control Mode ◽  
Hydraulic Control ◽  
Hydraulic Power ◽  
Construction Machinery ◽  
Advantages And Disadvantages ◽  
Power And Control ◽  
And Control ◽  
Hydraulic Control System

This article analyses the use requirement of construction machinery, introduce the main features of typical construction machinery hydraulic system, derived power control modes of hydraulic system form hydraulic power form, compares the advantages and disadvantages of each power control mode, gives the optimization solutions, at last, sum up the full text of the construction machinery hydraulic power and control modes and prospect of the hydraulic system to precision control.

Design and Analysis of the Low-Speed Hydraulic Control System of 3.15MN Forging Press

2013 ◽  
Vol 690-693 ◽  
pp. 2210-2217
Author(s):  
Yi Bo Li ◽  
Ming Hui Huang ◽  
Qing Pan ◽  
Min Chen
Keyword(s):  
Control System ◽  
Hydraulic System ◽  
Hydraulic Press ◽  
System Structure ◽  
Hydraulic Control ◽  
Low Speed ◽  
Hydraulic Theory ◽  
Forging Press ◽  
The Mathematical Model ◽  
Hydraulic Control System

A low speed hydraulic control system applying to 3.15MN forging press isdesigned for isothermal forging processes. Based on the hydraulic theory andthe system structure, both the mathematical model and the simulation model ofthe hydraulic press are established with its features discussed. PID controlmethod is adopted and genetic algorithm is used to automatically tune theparameters of the controller to deal with nonlinearity and time-variant of thecontrolled plant. Co-simulation of the control system and hydraulic system isestablished to verify the feasibility of the design. It is proved by anisothermal forging of a turbine disc that the system has good performances andcan achieve an ultra speed control in the end.

Design and Analysis of Hydraulic Control System for Pipe Storage and Handling System

2011 ◽  
Vol 480-481 ◽  
pp. 1240-1245
Author(s):  
Yu Wang ◽  
Bao Lin Liu ◽  
Yuan Biao Hu
Keyword(s):  
Control System ◽  
Hydraulic System ◽  
Hydraulic Pressure ◽  
Hydraulic Control ◽  
Round Trip ◽  
Handling System ◽  
Piston Speed ◽  
Valve Operation ◽  
Hydraulic Control System ◽  
Pipe Joint

This paper research the hydraulic control system of pipe storage and handling system. The pipe storage and handling system (PSHS) is the key parts on rig to handle the drilling pipe and it can improve the efficiency during the drilling works. The hydraulic system of pipe storage and handling system have designed according to automatic round-trip operation in drilling engineering. The mathematical modeling of hydraulic components in PSHS have established and analyzed. The simulation model of hydraulic system of PSHS is also built and simulated to analysis the characteristics of reversal valve operation, Hydraulic pressure adjusting operation, piston speed control and state of accumulator based on the AMESim. The results prove that the operations of pipe storage and handle such as pipe storage, pipe clamping, pipe lifting, pipe transfer and pipe joint can be accomplished drive by hydraulic system. Meanwhile, AMESim have great views to research the geosciences equipment.

Simulative and Experimental Study on Electromagnetic Pump Supplying Liquid Alloys during Casting: Modeling and Effects of Design Parameters on Pump Height

2013 ◽  
Vol 470 ◽  
pp. 441-446 ◽  
Author(s):  
Xi Xi Dong ◽  
Liang Ju He ◽  
Guang Bao Mi ◽  
Pei Jie Li
Keyword(s):  
Structural Design ◽  
Liquid Aluminum ◽  
A356 Alloy ◽  
Design Parameters ◽  
Iron Core ◽  
Liquid Alloys ◽  
Electromagnetic Pump ◽  
Simulation Results ◽  
Experimental Values ◽  
The Relationship

The pump height (ΔH) of liquid A356 alloy by the plane induction electromagnetic pump supplying liquid aluminum alloys during casting was measured, and the experimental values agreed with 3D simulation results. It was found that the relationship between ΔH and frequency was relevant with structural design parameters, and the increase of ΔH versus frequency started to deviate from linearity when the width of the pump ditch (b) was higher than that of the iron core (W). ΔH was found to be always proportional to the square of the current and irrelevant with frequency and structural design parameters. It was also found that ΔH decreased significantly with the magnetic gap and increased with W and the thickness of the iron core, while ΔH was not affected by the polar distance. In addition, ΔH increased first rapidly and later slowly with b till the maximum was reached, after which ΔH started to decrease slowly with b.

The Influence of On-off Shift Solenoid Valve's Design Parameters on Electromagnetic Force

2013 ◽  
Vol 459 ◽  
pp. 396-401
Author(s):  
Fei Huang ◽  
Yi Quan Li ◽  
Wei Zhang ◽  
Chun Yang Wang
Keyword(s):  
Electromagnetic Force ◽  
Control Device ◽  
Solenoid Valve ◽  
Design Parameters ◽  
Reference Ranges ◽  
Hydraulic Control ◽  
The Finite Element Method ◽  
Circuit Partitioning ◽  
Air Gaps ◽  
The Relationship

The integrated transmission device of tank and armored vehicles is controlled by the electro-hydraulic control device, and the On-off shift solenoid valve is just the key component in it. As to models of different air gaps and voltages, through the magnetic circuit partitioning method and the finite element method, the relationship between design parameters and the electromagnetic force is got, and the reference ranges of voltage and gaps for steady electromagnetic force are also obtained from the results, which supply the theoretical basis for the design of structure of the solenoid valve.

Development of Metal Sheets Hydraulic Deep Drawing Tooling

2013 ◽  
Vol 706-708 ◽  
pp. 1286-1289
Author(s):  
Xian Chang Mao ◽  
Si Li
Keyword(s):  
Deep Drawing ◽  
Hydraulic System ◽  
Hydraulic Control ◽  
Blank Holder ◽  
Single Action ◽  
Drawing Test ◽  
Metal Sheets ◽  
Deep Drawing Test ◽  
Hydraulic Control System ◽  
Oriented System

A simple and practical hydraulic deep drawing test tooling is developed to investigate metal sheets formability. It is composed of two parts including the forming die and hydraulic control system. Experiments with varied material and dimensional sheets of hydraulic deep drawing and mechanical deep drawing can be fulfilled by the tooling on a Single-Action Press without complicate external hydraulic system, blank holder system and oriented system for punch, respectively. The tooling is testified to be simply, facile and reliable, which can perfectly perform the sheets forming in hydraulic deep drawing, and the formability of sheets was improved effectively with hydraulic deep drawing.

Hydraulic Control System Design for XYZM Plate-and-Frame Filter Press

2014 ◽  
Vol 945-949 ◽  
pp. 2788-2793
Author(s):  
Lan Xiang Hou ◽  
Feng Gang Li ◽  
Cai Xia Ju ◽  
Wei Xu
Keyword(s):  
Control System ◽  
Hydraulic System ◽  
Filter Press ◽  
Control System Design ◽  
Hydraulic Control ◽  
Working Process ◽  
Hydraulic Principle ◽  
Working Principle ◽  
System Effectiveness ◽  
Hydraulic Control System

This paper introduces the working principle of XYZM Plate-and-frame Filter Press, illustrates the working process of the hydraulic control system by combining circuit and hydraulic principle diagram, and then gives out the checking analysis and the failure analysis on the hydraulic system. The application results show that our hydraulic control system can not only complete the automatic control well for the plate-and-frame filter press, but also keep the pressure stable and controllable, which improves the productivity and the system effectiveness.

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