Research of Hydraulic Cylinders Dynamic Characteristic and Synchrocontrol on Horizontal Pipes Connector in Deep Sea

2012 ◽  
Vol 164 ◽  
pp. 421-424
Author(s):  
Zhuo Wang ◽  
Yan Jie Li ◽  
Bo Zhang ◽  
Wei Zhang ◽  
Y.Z. Zhang
Keyword(s):  
Dynamic Characteristic ◽  
Deep Sea ◽  
Hydraulic System ◽  
Pid Controller ◽  
Simulation Analysis ◽  
Hydraulic Cylinder ◽  
Horizontal Pipes ◽  
Differential Coefficient ◽  
Hydraulic Cylinders ◽  
Hydraulic Servo

The electro-hydraulic position-servo synchronization system of horizontal pipes connector was designed in order to connect two pipes in deep sea and make sure the journey of synchronization hydro-cylinders in the hydraulic system is less than 2 mm.Its transfer function of symmetric servo controlling oil-cylinder electro-hydraulic servo system were derived . Simulation analysis of its dynamic characteristic was done, and PID controller was applied on the system to regulate two hydraulic cylinder synchronization controls. In the end ,when the proportionality coefficient is Kp=0.55,integral coefficient is Ki=60,differential coefficient is Kd=0,the error of synchronic displacement was less than 0.5 mm, that achieved the request of the control system.

Simulation and Optimization Research of Multi-Stud Tensioning Machine Controlled by Servo Valve

2013 ◽  
Vol 664 ◽  
pp. 871-877
Author(s):  
Xiao Dong Tan ◽  
Wei Ji ◽  
Zhi Bo Luan
Keyword(s):  
Dynamic Characteristics ◽  
Pid Controller ◽  
Simulation Analysis ◽  
Mathematic Model ◽  
Hydraulic Cylinder ◽  
Simulation And Optimization ◽  
Hydraulic Cylinders ◽  
Hydraulic Servo ◽  
Hydraulic Servo System ◽  
The Stability

In this paper, we base on the simulation analysis of the electro-hydraulic servo system about dual hydraulic cylinders parallel driving Multi-Stud Tensioning Machine, focus on the dynamic characteristics of a single hydraulic cylinder (asymmetric hydraulic cylinder), make use of Matlab Simulink module to carry on to imitate, and design a PID controller to correct the system. The results of simulation prove correctness of the system mathematic model, and the stability of the system is obviously improved.

scholarly journals Analysis of energy absorption characteristics of corrugated top beam of anti-impact hydraulic support

2021 ◽  
Author(s):  
JUN MAO ◽  
Chenghu GUO ◽  
MIAO XIE
Keyword(s):  
Control System ◽  
Simulation Analysis ◽  
Order Term ◽  
Response Speed ◽  
Hydraulic Cylinder ◽  
Phase Lag ◽  
Mobile Platforms ◽  
Hydraulic Cylinders ◽  
Hydraulic Servo ◽  
Uncertain Disturbance

Abstract To solve the problem that the response of the walking platform of bricklaying robot is slow and uncertain factors such as load change and friction of hydraulic cylinder affect the adjustment accuracy, an electro-hydraulic servo system with four hydraulic cylinders is designed. The system is an improved ADRC method. The available information of the whole system is fully considered, and the piston rod position deviations of the hydraulic cylinder is taken as the input of the whole controller to reduce the phase lag caused by the extended observer and improve the response speed of the control system. The position deviations of the piston rod in a cylinder is compensated by observation, and the high-order term and uncertain disturbance in the whole control system are defined as total disturbance, so the structure of the controller is simplified appropriately. Finally, MATLAB and AMESim are used for simulation analysis. The simulation results show that the improved ADRC method can significantly improve the response speed of the system and the suppression of uncertain disturbance. This research provides a theoretical basis for the research of masonry robot mobile platforms.

Hydraulic Model and Simulation Analysis for Monorail Brake System

2013 ◽  
Vol 278-280 ◽  
pp. 350-353 ◽  
Author(s):  
Feng Gao ◽  
Lin Jing Xiao ◽  
Shuai Guo ◽  
Hong Gang Ma
Keyword(s):  
Hydraulic System ◽  
Simulation Analysis ◽  
Hydraulic Cylinder ◽  
Mine Safety ◽  
Brake System ◽  
Flow Area ◽  
Throttle Valve ◽  
Model And Simulation ◽  
Spring Force ◽  
Unloading Time

This paper mainly analyzes the hydraulic system principle during the monorail braking, and come to a conclusion that the spring stiffness and the throttle valve flow area are main factors affect the brake system. Then we use the MSC.EASY5 to modeling the hydraulic system, and simulate the unloading time of hydraulic cylinder under the spring force, the result shows that, the response time of a braking system can meet the requirement of the coal mine safety regulation, and change the flow area of throttle valve will affect the brake system.

Simulation Analysis of Synchronization Control for Ultrahigh Pressure Sterilization Equipment Based on AMESim

2014 ◽  
Vol 496-500 ◽  
pp. 1340-1343
Author(s):  
Gui Hua Fang ◽  
Xiao Yan Li
Keyword(s):  
Hydraulic System ◽  
Simulation Analysis ◽  
Hydraulic Cylinder ◽  
Synchronous Motor ◽  
Ultrahigh Pressure ◽  
Synchronization Control ◽  
Working Principle ◽  
Working Performance ◽  
Sterilization Equipment ◽  
Synchrony Measure

This paper introduces the working principle of the ultrahigh pressure sterilization equipment, the hydraulic system of hydraulic cylinder promoting the plug moving is analyzed by simulation, and then the hydraulic system added synchronous motor is analyzed by simulation, which found that the latter hydraulic system has higher synchrony measure , and it can improve the working performance of the original equipment, and it has certain reference significance to the improvement of the hydraulic system of the equipment.

Analysis of Flanges Mechanics and Sealing on Horizontal Pipes Connector in Deep Sea

2012 ◽  
Vol 164 ◽  
pp. 326-329 ◽  
Author(s):  
Zhuo Wang ◽  
Yan Jie Li ◽  
Bo Zhang ◽  
Wei Zhang ◽  
Feng Kun Liu
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Deep Sea ◽  
Compressive Force ◽  
Horizontal Pipes ◽  
Contact Property ◽  
Sealing Ring ◽  
Hydraulic Cylinders ◽  
Element Method

The mechanism structure of horizontal pipes connector was designed in order to connect two pipes in deep sea. The contact property of mechanics and sealing ring between the two flanges was analyzed, which was used finite element method, and obtained permissible compressive force and displacement of the sealing ring to realize sealing. The result is that the metal sealing ring allows the largest compression displacement of the metal sealing ring is 2 mm. It is accurately required to control the displacement of the pistons of hydraulic cylinders that push the flange.

Dynamic Characteristics Simulation of Radiator Fin Blanking Machine Hydraulic System

2014 ◽  
Vol 687-691 ◽  
pp. 496-499
Author(s):  
Jie Wang
Keyword(s):  
Simulation Model ◽  
Dynamic Characteristics ◽  
Hydraulic System ◽  
Simulation Analysis ◽  
Good Condition ◽  
Hydraulic Cylinder ◽  
Simulation Software ◽  
Product Line ◽  
Leading Role

The hydraulic system of radiator fin blanking machine plays a leading role in the radiator fin production. Its performance directly affects the efficiency and quality of product line. The hydraulic system of blanking machine for radiator was composed of blanking circuit and support circuit. The hydraulic system realizes the cutting action using the reciprocating movement of the hydraulic cylinder. The hydraulic system simulation model was built by the simulation software of AMESim in this paper. Using the simulation model, the simulation analysis of the dynamic characteristics of hydraulic system were completed. The hydraulic system has been through the debugging and put into production, running in good condition.

Two Layer Fuzzy Generalized Maxwell-Slip Compensator in Direct Drive Servo Hydraulic System

2012 ◽  
Vol 249-250 ◽  
pp. 420-427 ◽  
Author(s):  
Pitipongsa Guansak ◽  
Den Kogphimai ◽  
Watcharin Po-Ngaen
Keyword(s):  
Hydraulic System ◽  
Fuzzy Controller ◽  
Nonlinear Effects ◽  
Friction Compensation ◽  
Nonlinear Friction ◽  
Direct Drive ◽  
Hydraulic Cylinders ◽  
Hydraulic Servo ◽  
Hydraulic Servo System ◽  
Friction Compensator

In industrial machinery units in which handle with high loads, hydraulic cylinders are often used to actuate the manipulators. The nonlinear effects of friction in the hydraulic cylinders can be a problem if they disturb the motion of the hydraulic servo system.Friction compensation is a prerequisite for accurate in a hydraulic servo system. This paper presents anintelligent nonlinear friction compensation framework,which the purpose is to develop a friction compensator strategy based on adaptive twolayer fuzzy controller. Thecompensator Generalized Maxwell-Slip fuzzy,combined with fuzzy controller, will be implemented to reduce the lackperformance resulting from friction. The electiveness of this approach is demonstrated by experiments on the direct drive servo hydraulic system.

Fuzzy PID Control for Valve-Controlled Cylinder Hydraulic System

2012 ◽  
Vol 212-213 ◽  
pp. 1244-1248
Author(s):  
Yan Jun Liu ◽  
Yu Dong Xie ◽  
Hui Wang
Keyword(s):  
Hydraulic System ◽  
Pid Controller ◽  
Simulation Analysis ◽  
Model Simulation ◽  
Fuzzy Pid ◽  
Fuzzy Pid Control ◽  
Change Rate ◽  
Control Error ◽  
Fuzzy Pid Controller ◽  
And Control

A valve-controlled cylinder hydraulic system is used widely in engineering. The principle of the valve-controlled cylinder hydraulic system is presented. The fuzzy PID controller of valve-controlled cylinder hydraulic system is designed, and the simulation model is built. Based on the model, simulation analysis is carried out. The results show that the PID controller parameters can change with the variations of control error and control-error change rate according to fuzzy reasoning, the response error of valve-controlled cylinder is kept in a range of -0.06～0.1cm, and the required control accuracy can be obtained.

Research and Simulation of Fuzzy PID Controller

2015 ◽  
Vol 779 ◽  
pp. 233-238
Author(s):  
Lu Ding ◽  
Wang Cheng
Keyword(s):  
Hydraulic System ◽  
Pid Controller ◽  
Fuzzy Controller ◽  
Parameter Tuning ◽  
Fuzzy Pid ◽  
Parallel Connection ◽  
Fuzzy Pid Controller ◽  
Controlling System ◽  
Static Performance ◽  
Hydraulic Cylinders

In light of the difficulty for the multi-variable fuzzy controller to formulate a sophisticated set of rules concerning multi-dimensional controlling, this project proposes a parallel connection fuzzy PID controller, each PID employing two fuzzy controllers to carry out parameter tuning. This project applies the parallel connection PID fuzzy controller in controlling the jacking system of the multi-hydraulic cylinders. Through the AMESim/Simulink connector, joint simulation is achieved for the hydraulic system and the controlling system. The result of the simulation reveals that this application effectively improves the dynamic and static performance of the system, as well as synchronization precision in the jacking of the hydraulic cylinders.

Hydraulic System Simulation of 3-UPS Parallel Mechanism Based on ADAMS/Hydraulics

2013 ◽  
Vol 579-580 ◽  
pp. 430-433
Author(s):  
Bing Bing Yan ◽  
Wen Bo Ren ◽  
Bao Lin Yin ◽  
Yang Li
Keyword(s):  
Hydraulic System ◽  
Parallel Mechanism ◽  
Simulation Analysis ◽  
Theoretical Calculations ◽  
Three Dimensional ◽  
Hydraulic Cylinder ◽  
Prototype Model ◽  
Pressure Curve ◽  
Hydraulic Control ◽  
Coupling System

In order to guaranty the work stability of the move-in-mud robot and movement relationship of wriggle turning joint, to use the 3-UPS parallel mechanism as the steering joint. Make full use of the characteristics flexibility, heavy force loading and small workspace of the parallel mechanism. Supporting link of the parallel mechanism driven by hydraulic cylinders, so a completely hydraulic system is an important factor to ensure the stationary work of parallel mechanism, provide the required power to go forward and ensure the forward speed of the move-in-mud robot. Establish the virtual prototype model of mechanical-hydraulic coupling system by using of Pro/E and ADAMS/Hydraulics software, do the dynamic simulation analysis of hydraulic control system based on Hydraulics module, the simulation process can be made more visual and vivid by three-dimensional visualization. Obtain the platform speed and hydraulic cylinder pressure curve after simulation, compare simulation results with theoretical calculations, and verify that the design is reasonable. The results show that it lays the foundation for the further optimization and research of the move-in-mud robot.

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