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.

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.

The Modeling and Control of the Hydraulic Servo System by Using On-Off Valve

2000 ◽  
Author(s):  
Xuanyin Wang
Keyword(s):  
Servo System ◽  
Mathematic Model ◽  
Hydraulic Cylinder ◽  
Servo Control ◽  
Linear Quadratic ◽  
Modeling And Control ◽  
Hydraulic Servo ◽  
Self Tuning ◽  
Hydraulic Servo System ◽  
And Control

Abstract This paper researches on the hydraulic servo system by using ordinary on-off valves. The mathematic model of an asymmetric hydraulic cylinder servo control system is built, and its characteristic is analysed here. To reduce the static and dynamic characteristic differences between forward and reverse motion of asymmetric cylinder, and improve system’s performance, a self-tuning linear quadratic gaussian optimum controller (SLQG) is designed successful. In the end, an asymmetric hydraulic cylinder servo system of paint robot is researched. The result shows that the above method is effective.

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.

Design and Integrated Simulation of the Electro-Hydraulic Servo System Based on AMESim and Matlab

2010 ◽  
Vol 44-47 ◽  
pp. 1355-1359 ◽  
Author(s):  
Xiang Xu ◽  
Zhi Xiong Li ◽  
Hong Ling Qin
Keyword(s):  
Control System ◽  
Design Method ◽  
Design Procedure ◽  
Servo System ◽  
Hydraulic Cylinder ◽  
Fast Response ◽  
Simulation Design ◽  
Integrated Simulation ◽  
Hydraulic Servo ◽  
Hydraulic Servo System

Since electro-hydraulic servo system has fast response and highest control accuracy, it has been widely used in industrial application, including aircraft, mining, manufacturing, and agriculture, etc. With the fast development of computer science, it is feasible and available to evaluate the performance of the designed control system via virtual simulation before the practical usage of the system. In order to optimize the design procedure of the electro-hydraulic proportional controller, the co-simulation design method based on AMESim-Matlab is presented for the electro-hydraulic servo system in this paper. High accuracy of the mathematical model of electro-hydraulic servo system was full-fitted by the use of AMESim, and the advantage of high solving precision for large amount of calculation was full played using Matlab. The PID controller was employed to realize the efficient control of the motion of the hydraulic cylinder. The united simulation technique was adopted to verify the good performance of the designed control system. The simulation results suggest that the proposed method is effective for the design of electro-hydraulic servo systems and thus has application importance.

Dynamic Characteristics Study on Hydraulic Impact of Cartridge Valve in High Pressure and Large Flow Depressurization Process

2012 ◽  
Vol 510 ◽  
pp. 350-355
Author(s):  
Kang Sun ◽  
Wen Chen ◽  
Jian Ping Tan
Keyword(s):  
Mechanical Properties ◽  
High Pressure ◽  
Dynamic Characteristics ◽  
Simulation Analysis ◽  
Analysis Software ◽  
Hydraulic Oil ◽  
Hydraulic Impact ◽  
The Stability ◽  
Impact Characteristics ◽  
Large Flow

Dynamic analysis software ANSYS/LS-DYNA is applied to fluid-structure coupling simulation analysis of cartridge valve. Transient mechanical properties of cartridge valve and impact characteristics of interaction between hydraulic oil and valve spool in depressurization process were got. The result of study showed that the stability of depressurization process is related to the contacting time between valve spool and valve sleeve. The squeezing time of hydraulic oil is best not more than 0.01s. The peak impact time of hydraulic oil to valve spool in steady depressurization process is 140kN. And the maximum VonMises between valve spool and valve sleeve is 456MPa.

Dynamic Characteristic Analysis of Hydraulic Servo System in a Mold Oscillating Mechanism

2014 ◽  
Vol 1025-1026 ◽  
pp. 183-191 ◽  
Author(s):  
Yong Hui Park ◽  
Hyun Chul Park
Keyword(s):  
Servo System ◽  
Characteristic Analysis ◽  
Operation Conditions ◽  
Design Variables ◽  
Hydraulic Servo ◽  
Natural Characteristic ◽  
Hydraulic Servo System ◽  
The Stability ◽  
Oil Gas ◽  
Force Equilibrium

In this study, a hydraulic servo system for mold oscillating mechanism was investigated. In order to check the efficiency and the stability of system, its geometrical designs, which change the natural characteristic of system, including a spool volume, area of piston, and so on were analyzed by a non-linear model. The model was composed of the equation of orifice, the continuity equation, and the force equilibrium including a variable effective bulk modulus belonging to operating oil, gas, and cylinder. All simulations were conducted by the MATLAB SIMULINK, and simulated as specific conditions corresponding real operation conditions in the steel industry. According to the analysis, the relation between a controller, servo design, and system performance was investigated with physical means. And, the fact that not compared to other design variables, the entrance shape on spool was dominant to determine the stability and the performance of system, was found. Furthermore, a fault detection method, and optimization problem including this work were discussed.

The Constant Power Control of Hydraulic Grinding Saw

2006 ◽  
Vol 304-305 ◽  
pp. 465-468
Author(s):  
Jin Chun Song ◽  
J.W. Chen ◽  
Zhi Wei Zhang
Keyword(s):  
Simulation Analysis ◽  
Servo System ◽  
Metallurgical Industry ◽  
Grinding Wheel ◽  
Constant Power ◽  
Hydraulic Servo ◽  
Feeding Speed ◽  
Hydraulic Servo System ◽  
Driving Torque ◽  
The Relationship

Hydraulic grinding saw is a kind of important equipment broadly used in billet precise cutting in metallurgical industry. In order to improve productivity significantly, control feeding speed reasonably, at the same time to compensate the variation of driving torque caused by the change of contacting area between grinding wheel and slab, thus to obtain the optimized match between the feed of the grinding wheel and the driving motor, the application of hydraulic servo system in the control of the feeding speed of grinding wheel is discussed in this thesis. This article introduces the principle of hydraulic grinding saw, brings out the project of constant power PID control based on the relationship between driving torque and motor current. The transfer function of the hydraulic servo system, the optimized PID controller is also worked out. According to the result of simulation analysis, the controlling factors can be well obtained.

The Obstacle-Surmounting Process Simulation of Arm-Swing Wheeled Robot Based on MATLAB

2011 ◽  
Vol 199-200 ◽  
pp. 1244-1248
Author(s):  
Li Gong ◽  
Yu Feng Ding ◽  
Bu Yun Sheng ◽  
Dong Dong Che
Keyword(s):  
Simulation Analysis ◽  
Mathematic Model ◽  
Test Results ◽  
Complex Environment ◽  
Arm Swing ◽  
Wheeled Robot ◽  
Resistance Moment ◽  
Physical Prototype ◽  
Three Stages ◽  
The Stability

Considering complex environment of disaster site, an Arm-swing Wheeled Robot (AWR) with auxiliary obstacle-surmounting mechanism was developed. The obstacle-surmounting process is simplified into three stages, and the mathematic model of kinematic for each stage has been established. The simulation for each stage of obstacle-surmounting has been carried out in MATLAB. The stability of obstacle-surmounting is analyzed and the trend of resistance moment is obtained. Finally, the effectiveness of simulation analysis is verified by comparing with the test results of physical prototype.

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.

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