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.

Rig Test and Analysis of Dynamic Engagement Process of Wet Clutch

2014 ◽  
Vol 945-949 ◽  
pp. 1461-1464
Author(s):  
Han Yu Jin ◽  
Xiu Sheng Cheng ◽  
Xiu Feng Song
Keyword(s):  
Mathematical Model ◽  
Experimental Verification ◽  
Constant Pressure ◽  
Simulation Analysis ◽  
Test Rig ◽  
Wet Clutch ◽  
Engagement Process ◽  
Working Principle ◽  
The Mathematical Model

The working principle of wet clutch was analyzed and the mathematical model was established for torque deliver. Experimental verification and simulation analysis was carried out for the clutch model in the situation of constant pressure engaging process. An efficiency examination of wet clutch implemented on the test rig and provided theory evidence for pressure precisely control.

Research on Dynamic Characteristics of Anti-Reverse Valve for Hydraulic Excavator Rotary Motor

2013 ◽  
Vol 871 ◽  
pp. 290-295
Author(s):  
Yan Lei Luo ◽  
Cong Guo Xu ◽  
Qiu Yan Zhang
Keyword(s):  
Dynamic Characteristics ◽  
Hydraulic System ◽  
Working Condition ◽  
Great Influence ◽  
Hydraulic Excavator ◽  
Middle Chamber ◽  
Working Principle ◽  
The Impact ◽  
Rotary Motor ◽  
Amesim Simulation

Hydraulic excavator slewing system is an important component of the excavator and its core-component is the rotary motor. When the rotary hydraulic system starts, stops, and reciprocating works, dynamic characteristic of rotary motor anti-reverse valve has a great influence for working condition of the whole system. Through researching working principle of hydraulic system anti-reverse valve, establish dynamic mathematical model of anti-reverse valve, analyze dynamic response of the model, and get the theoretical foundation of the impact of anti-reverse valve middle chamber throttle opening on hydraulic system. According to the actual working condition of the excavator slewing hydraulic system, establish the system AMESim simulation model, take different parameters of the anti-reverse valve throttle opening, conduct simulation and analysis of the anti-reverse valve characteristics, and validate throttle opening has a great influence on dynamic characteristics of the hydraulic system.

Mathematical Model of Four Wheeled Mobile Robot and its Experimental Verification

2014 ◽  
Vol 611 ◽  
pp. 130-136 ◽  
Author(s):  
Ľubica Miková ◽  
Michal Kelemen ◽  
Dušan Koniar
Keyword(s):  
Mathematical Model ◽  
Mobile Robot ◽  
Simulation Model ◽  
Experimental Verification ◽  
Transformation Matrix ◽  
Wheeled Mobile Robot ◽  
Function Model ◽  
Simulation Experiments ◽  
Centre Of Gravity

The paper deals with creation of a mathematical model of the mobile robot. For description of the kinematic variables such as position and velocity of each wheel a transformation matrix is used. The simulation model can be applied for calculation of assumed of the undercarriage centre of gravity and path of wheels. The function model was also used for experimental verification of the results of simulation experiments.

Simulation Research on Hydraulic Support Column System Based on AMESim

2012 ◽  
Vol 229-231 ◽  
pp. 1684-1687
Author(s):  
Jun Zhu ◽  
Feng Yuan ◽  
Hong Xia Wu
Keyword(s):  
Simulation Model ◽  
Working Conditions ◽  
Hydraulic System ◽  
Hydraulic Support ◽  
Simulation Research ◽  
Column System ◽  
Actual Working ◽  
Working Principle ◽  
Simulation Results ◽  
Working Procedure

The working principle and process of the hydraulic support column system is introduced at first. The simulation model of the column system is established in the software of AMESim, and the parameters of the model are set according to the actual working conditions. The simulation curves of each working procedure are obtained, and the simulation results are analyzed. The conclusions will be essential references for the research on the entire support hydraulic system.

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.

Pulverizing System Simulation Model of a 300MW Oxy-Fuel Coal Fired Boiler

2014 ◽  
Vol 997 ◽  
pp. 670-673
Author(s):  
Jian Qiang Gao ◽  
Ning Wang ◽  
Yu Lan Wang ◽  
Liang Jie Shen
Keyword(s):  
Simulation Model ◽  
Dynamic Characteristic ◽  
Dynamic Simulation ◽  
Flue Gas ◽  
System Simulation ◽  
Working Principle

This paper focused on researching the pulverizing system of a 300MW oxy-fuel coal fired boiler, which took dehydrated recirculation flue gas as the drying medium. According to the working principle, the paper established the simulation model, and completed dynamic simulation tests basing on the IMMS platform. The dynamic simulation tests included the disturbances of the pressure of the flue gas inlet and the opening degree of the main flue gas valve. The results demonstrate that the model is precise, stable and it possesses good dynamic characteristic.

Analysis on Engine Stall Issue of Closed Hydraulic System

2012 ◽  
Vol 482-484 ◽  
pp. 35-38
Author(s):  
Zhong Yi Cao ◽  
Rui Guo Liu ◽  
Wan Rong Wu ◽  
Qing Chen
Keyword(s):  
Mathematical Model ◽  
Hydraulic System ◽  
Engine Speed ◽  
Pressure Side ◽  
System Pressure ◽  
Drive Motor ◽  
Outlet Flow ◽  
Simulation Results ◽  
External Loads ◽  
Amesim Simulation

The paper obtains motor pressure, flow and speed and the engine speed curves with time by theoretically analyzing closed hydraulic system of wheel walk engineering machinery and establishes a mathematical model of the system and AMESim simulation model. The simulation curves show that in some cases the external loads react against motor and drive motor speeding and then motor outlet flow increase that leads to the pressure of low-pressure side increasing and the pressure of high-pressure side reducing. The mutation of system pressure drives bump and engine speeding that equates to the engine speed is lower than the speed corresponding to the motor flow, which is engine stall problem. The simulation results show that the basic reason of engine stall is walking condition mutation leads to motor speeding and system pressure mutation and then motor reacts against bump and engine.

Dynamic Simulation on Shock Excitation Hydraulic System with Rotary Valve Based on AMEsim

2012 ◽  
Vol 232 ◽  
pp. 508-511
Author(s):  
Hui Wang ◽  
Zong Yue Deng
Keyword(s):  
Simulation Model ◽  
Dynamic Simulation ◽  
Hydraulic System ◽  
Rotary Valve ◽  
Shock Excitation ◽  
Modeling Software ◽  
Working Principle

Introduce structure and working principle of shock excitation hydraulic system in VSR equipments, establish its simulation model with advanced modeling software .Through dynamic simulation get simulation curves under different conditions, and analyses some important parameters’ influents on the system, and provide the basis for testing and improving the system.

The Design and Simulation Test Research of Electrical Mechanical Brake

2011 ◽  
Vol 421 ◽  
pp. 526-531 ◽  
Author(s):  
Zhu Lin Zhang ◽  
Ru Quan Dai ◽  
Chang Feng Zhou
Keyword(s):  
Mathematical Model ◽  
Simulation Model ◽  
Prototype Model ◽  
Simulation Test ◽  
Vehicle Type ◽  
Adams Software ◽  
Reliable Performance ◽  
Working Principle ◽  
The Mathematical Model ◽  
Reaction Speed

The Electrical Mechanical Brake(EMB) is advanced with plenty functions of ABS, TCS and ESP etc. EMB has a very good development prospect for its good reaction speed and reliable performance as well as easy installation maintenance. It is necessary to study the method of design and simulation of EMB. First, the structure, working principle and the related parts mathematical model of EMB were introduced and the mathematical model of motor was built; second, virtual prototype model of EMB was designed in Pro/e software and developed with constraint and parameter set in adams software; finally, we built the co-simulation model of EMB using adams and Simulink and chosen a certain vehicle type to analyze and verify. The result shows that this method is efficient and feasible.

The Design of Valve Block of Megawatt Wind Turbine Hydraulic Yaw System and AMESim Simulation Model

2014 ◽  
Vol 596 ◽  
pp. 598-601
Author(s):  
Jie Gao ◽  
Li Wen Yan ◽  
Cun Jin Ai ◽  
Hui Xie
Keyword(s):  
Simulation Model ◽  
Wind Turbine ◽  
Hydraulic System ◽  
Main Part ◽  
System Model ◽  
Pumping Station ◽  
3D Software ◽  
Valve Block ◽  
Amesim Simulation

In view of the current 1.5 megawatt wind turbine,this paper designs a set of corresponding hydraulic system,mainly including the system of pumping station valve block the main part by UG 3D software,the AMESim software is used to establish the yaw hydraulic system model and the analysis of the simulation.

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