Bond Graph Simulation and Test on the Working Hydraulic System of ZL50 Type Loader

2011 ◽  
Vol 127 ◽  
pp. 390-394
Author(s):  
Hui Wang ◽  
Fei Yang
Keyword(s):  
Modeling And Simulation ◽  
Hydraulic System ◽  
Graph Model ◽  
Bond Graph ◽  
Simulation Software ◽  
State Function ◽  
Control Engineering ◽  
Simulation Results ◽  
Graph Simulation ◽  
Working Device

Based on the modeling and simulation software 20-sim developed by Control Engineering Group in University of Twebte in the Netherlands, the bond graph model of the hydraulic system for the working device of ZL50 wheel loader was established. During simulating the model, with the main parameters of the model were set based on the actual test result, which can skip deriving state function and simulate the system directly with the results of pressure response. The simulation results show that this method is feasible and convenience in the application of hydraulic dynamic simulation. Further more, through the test of cylinder pressure when the loader in the practical work, by comparing with the simulation results, which provides a new way in the field of dynamic modeling and simulation for hydraulic system.

Performances analysis of a novel load-sensing hydraulic system with overriding differential pressure control

2016 ◽  
Vol 231 (23) ◽  
pp. 4331-4343 ◽  
Author(s):  
Hu Quanyi ◽  
Zhang Hong ◽  
Tian Shujun ◽  
Qin Xuxin
Keyword(s):  
Hydraulic System ◽  
Graph Model ◽  
Pressure Control ◽  
Bond Graph ◽  
Differential Pressure ◽  
Operating Conditions ◽  
Control Mode ◽  
Variable Pressure ◽  
Load Sensing ◽  
Sensing System

The traditional load-sensing hydraulic system is an energy-saving fluid power transmission, which supply “on-demand” flow at a prescribed pressure margin greater than the highest load pressure of the system. In this paper, a novel load-sensing system that has a variable pressure margin through overriding differential pressure control via integrating an electro-proportional three-way type pressure reducing valve into the hydro-mechanical load-sensing valve is proposed. Also, a bond graph model taking into account the dynamic characteristics of load-sensing valve and load-sensing path is constructed, and three group experiments are performed to verify the validation of the model. Based on the bond graph model, a series of theoretical simulations are carried out to prove that the proposed Load-Sensing system enables a satisfactory balance between energy efficiency and rapid dynamic response over a wide range of operating conditions. In addition, due to overriding differential pressure control, mode selection and power limit regulation can also be achieved.

Chaos, Complexity and Synchronization in Dynamical System Using Bond Graph

2015 ◽  
Vol 4 (1) ◽  
Author(s):  
Manoj Kumar Singh ◽  
Bharat Raj Singh
Keyword(s):  
Fourier Transform ◽  
Dynamic System ◽  
Modeling And Simulation ◽  
System Modeling ◽  
Physical Phenomenon ◽  
Graph Model ◽  
Bond Graph ◽  
Arbitrary Parameter ◽  
Disk File ◽  
Vehicle Dynamic

This paper describes a method for approaching an arbitrary parameter with initial outline, slider and simulation model, systematical and quantitative bond graph model of vehicle dynamic system. It illustrates a typical bond graph and object models using the three basic modules of the software. For brevity, only small problems are considered for simulation of vehicle dynamic system model. Bond graph techniques reveal its strength and beauty in developing a clear and simplified model for vehicle dynamic system. Fast Fourier Transform (FFT) generates discrete Fourier transform of a time-varying signal and stores it into a disk file containing discredited numerical values for all the system states, ranging over the entire simulation interval. In this paper, a vehicle dynamic Modeling and Simulation involving three partners viz., Vehicle model, Vehicle parameter and Vehicle simulator, are taken into consideration. This process consists of both modeling and simulating closely associated with each other. Vehicle dynamics is the science that studies the kinematics of wheeled land vehicles with its dimensions and benefits to mechanisms, suspensions and steering mechanisms. The dynamics of computer models of vehicles using Bond graph technique originated by H. M. Paynter, presents a tool for continuous system modeling in a graphical sense, by generalizing the physical phenomenon such as: Mechanical Dynamic System. The role of computerized modeling and simulation in engineering design continues to increase as companies are striving to gain competitive advantages by reducing the time required to move from concept to final product.

Design and Simulation for the Hydraulic System of a New-Style Monorail Crane Traction System

2013 ◽  
Vol 321-324 ◽  
pp. 94-97
Author(s):  
Jun Zhang ◽  
Qing Yang Cai ◽  
Xian Weng Zhao ◽  
Chun Ren Tang ◽  
Meng Meng Niu ◽  
...  
Keyword(s):  
Modeling And Simulation ◽  
System Performance ◽  
Hydraulic System ◽  
Design Scheme ◽  
Underground Cable ◽  
Simulation Results ◽  
Traction System

In order to meet the requirement of the underground cable checked, the hydraulic system of a new-style monorail crane traction system is introduced. The hydraulic system of the traction system was designed. The modeling and simulation for the hydraulic system was build, and the simulation results were analyzed subsequently. The research shows the system performance reaches the requirements. The simulation results are almost the same as the theoretical value, and the design scheme of the hydraulic system is feasible.

scholarly journals Bond Graph Modeling and Kalman Filter Observer Design for an Industrial Back-Support Exoskeleton

Designs ◽  
2020 ◽  
Vol 4 (4) ◽  
pp. 53
Author(s):  
Erfan Shojaei Barjuei ◽  
Darwin G. Caldwell ◽  
Jesús Ortiz
Keyword(s):  
Kalman Filter ◽  
System Dynamics ◽  
Dynamic Models ◽  
Block Diagram ◽  
Graph Model ◽  
Bond Graph ◽  
Simulation Software ◽  
Observer Design ◽  
Linear Quadratic ◽  
Bond Graph Modeling

This paper presents a versatile approach to the synthesis and design of a bond graph model and a Kalman filter observer for an industrial back-support exoskeleton. Actually, the main purpose of developing a bond graph model is to investigate and understand better the system dynamics. On the other hand, the design of the Kalman observer always should be based on a model providing an adequate description of the system dynamics; however, when back-support exoskeletons are considered, the synthesis of a state observer becomes very challenging, since only nonlinear models may be adopted to reproduce the system dynamic response with adequate accuracy. The dynamic modeling of the exoskeleton robotic platform, used in this work, comprises an electrical brushless DC motor, gearbox transmission, torque sensor and human trunk (biomechanical model). On this basis, a block diagram model of the dynamic system is presented and an experimental test has been carried out for identifying the system parameters accordingly. Both the block diagram and bond graph dynamic models are simulated via MATLAB and 20-sim software (bond graph simulation software) respectively. Furthermore, the possibility of employing the Kalman filter observer together with a suitable linear model is investigated. Subsequently, the performance of the proposed Kalman observer is evaluated in a lifting task scenario with the use of a linear quadratic regulator (LQR) controller with double integral action. Finally, the most important simulation results are presented and discussed.

Pseudo Bond Graph Modeling and Experimental Investigation of Thermal Transfers Inside a Household Refrigerator

2016 ◽  
Vol 24 (02) ◽  
pp. 1650014 ◽  
Author(s):  
Emna Aridhi ◽  
Mehdi Abbes ◽  
Abdelkader Mami
Keyword(s):  
Experimental Data ◽  
Experimental Investigation ◽  
Natural Convection ◽  
Graph Model ◽  
Bond Graph ◽  
Performance Comparison ◽  
Evaporator Temperature ◽  
Graph Modeling ◽  
Bond Graph Modeling ◽  
Simulation Results

This paper proposes a pseudo bond graph model of thermal transfers by natural convection inside a household refrigerator. It has two inputs: the ambient temperature and the temperature at the level of the evaporator wall. The latter assesses the functioning of the compressor cycles. A performance comparison, with the experimental data, was carried out in order to verify the model, in which, real measurements are used to modulate the evaporator temperature source. The simulation results show the effectiveness of the proposed approach.

Modeling and Simulation of Hydraulic Power System for Maintenance Training Simulator

2013 ◽  
Vol 816-817 ◽  
pp. 851-856
Author(s):  
Qing Xia Qin ◽  
Hong Geng
Keyword(s):  
Power System ◽  
Modeling And Simulation ◽  
Hydraulic System ◽  
Normal System ◽  
Training Simulator ◽  
System Operation ◽  
Hydraulic Power ◽  
Functional Simulation ◽  
Simulation Results ◽  
Training Simulation

Study of Hydraulic Power System for development of Maintenance Training Simulator is very important. By analyzing the operational principle of the hydraulic system, presents an aircraft hydraulic system functional simulation model. After the whole hydraulic model has been established, attach to the maintenance training simulation platform. Simulation results show that this model can simulate the normal system operation and indication, and can simulate the impacts of fault disturbances under various conditions, which meets the simulation demand.

Bond graph modeling of a jet engine with electric starter

2018 ◽  
Vol 233 (9) ◽  
pp. 3193-3210 ◽  
Author(s):  
Morteza Montazeri-Gh ◽  
Seyed Alireza Miran Fashandi
Keyword(s):  
Modeling And Simulation ◽  
System Development ◽  
Dynamic Performance ◽  
Graph Model ◽  
Systems Design ◽  
Bond Graph ◽  
Mechatronic Systems ◽  
Jet Engine ◽  
Graph Modeling ◽  
Bond Graph Modeling

Following the technological advances in recent decades, advanced electronic systems linked to the gas turbine industry are increasingly considered by the designers of this field. For this purpose, new airborne systems in conjunction with jet engines are developed, which are incorporated in many challenging design problems such as control law and configuration design. Thus, a comprehensive modeling structure is needed that can bolster the integrity of the system development such as the bond graph approach, which is known as an efficient method for modeling complicated mechatronic systems. In this paper, modeling and simulation of a jet engine dynamic performance and aircraft motion are achieved based on the bond graph approach. At first, the electric starter bond graph model is constructed and physical relationships governing each engine component are obtained. In the aftermath, the modulated energy fields are developed for the jet engine components. Subsequently, the bond graph model of the engine is numerically simulated and experimentally tested and verified for a small jet engine. Finally, bond graph modeling and simulation of integrated engine and aircraft system is presented. The test results indicate the acceptable accuracy of the modeling approach which can be applied for innovative diagnosis and control systems design.

Dynamic Characteristics Investigation on Hydraulic System of Power-Slipway for Combined Machine Tools

2014 ◽  
Vol 1006-1007 ◽  
pp. 142-146
Author(s):  
Xi Juan Qi ◽  
Jun Qi Ge
Keyword(s):  
Optimal Design ◽  
Performance Analysis ◽  
Dynamic Model ◽  
Dynamic Simulation ◽  
Dynamic Characteristics ◽  
Machine Tools ◽  
Hydraulic System ◽  
Bond Graph ◽  
Power Bond Graph ◽  
Simulation Results

The power bond graph of hydraulic system of power-slipway for combined machine tools was built on the basis of analysis on its hydraulic system and actual working cases. Dynamic model of hydraulic system of power-slipway was built. At the same time, making use of Simulink, dynamic simulation of hydraulic system of power-slipway was carried out. Influence law of primary technology parameters on dynamic characteristics of the hydraulic system of power-slipway was expounded. The simulation results will provide theory basis for performance analysis and optimal design of hydraulic system of power-slipway for combined machine tools.

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