Power Flow Diagrams Using a Bond Graph Library under Simulink

2006 ◽  
Author(s):  
Gert-Helge Geitner
Keyword(s):  
Power Flow ◽  
Bond Graph ◽  
Flow Diagrams

Predicting Response of a Proposed Hydraulic Control System Using Bond Graphs

1977 ◽  
Vol 99 (1) ◽  
pp. 1-8 ◽  
Author(s):  
B. W. Barnard ◽  
P. Dransfield
Keyword(s):  
Control Systems ◽  
Power Flow ◽  
Dynamic Performance ◽  
Digital Simulation ◽  
Bond Graph ◽  
Hydraulic Control ◽  
Graph Modeling ◽  
Power Bond Graph ◽  
Bond Graph Modeling ◽  
Assessment Procedures

Dynamic response is an important criterion of quality for many hydraulic control systems. It is suggested that power flow modeling procedures, and in particular the recent development of power bond graph techniques, provide the designer-analyst of hydraulic control systems with a particularly relevant means for investigating dynamic performance as he designs a proposed system. The bond graph modeling technique followed by digital simulation of the model is applied to a hydraulic system proposed for a particular task. Predicted response and subsequently measured response are given, compared, and discussed. Only generally available data and parameter assessment procedures were used for the prediction.

Fault Detection in a Cracked Pipeline Embedded with Piezoelectric Sensors/Actuators Employing Bond Graph Approach

2012 ◽  
Vol 476-478 ◽  
pp. 1015-1019 ◽  
Author(s):  
M. Kolbadi Nejad ◽  
A. Selk Ghafari ◽  
A. Zabihollah
Keyword(s):  
Power Flow ◽  
Active Vibration Control ◽  
Bond Graph ◽  
Piezoelectric Sensors ◽  
Graph Structure ◽  
Sensors And Actuators ◽  
Piezoelectric Sensors And Actuators ◽  
Equivalent Impedance ◽  
Active Vibration ◽  
Simulation Results

The main scope of this article is to simulate a cracked pipeline embedded with piezoelectric sensors and actuators utilizing bond graph approach. Piezoelectric sensors/actuators are becoming very popular in various applications such as health monitoring, active vibration control or noise reduction, and as a part of the systems called smart structures. The proposed bond graph structure in this study, graphically illustrates the power flow between the electrical and mechanical frameworks included in the system. In addition, the proposed framework makes it possible to utilize a modular structure for separately representing the electrical polarization of the material and its macroscopic electrical and mechanical effects. Simulation results illustrate that at the location of the crack the equivalent impedance is increased and the capacitance is decreased in comparison with the intact region.

Research on Electro-Hydraulic Load Simulator Based on Building Model of Flow Press Servo Valve

2010 ◽  
Vol 129-131 ◽  
pp. 213-217 ◽  
Author(s):  
Jun Peng Shao ◽  
Jian Ying Li ◽  
Zhong Wen Wang ◽  
Gui Hua Han
Keyword(s):  
Power Flow ◽  
Flow Direction ◽  
Graph Model ◽  
Bond Graph ◽  
Flow Equation ◽  
Simulation Design ◽  
Graph Models ◽  
Servo Valve ◽  
Hydraulic Load ◽  
Load Simulator

The model of flow press servo valve is built in this paper, during building the model, the author emphatically analyses the flow equation and force (torque) balance equation of every part of the valve, at the same time, all levels sub-models are organic combined according to power flow direction, signal flow direction of elements and causality, then we get the bond graph model of the flow press servo from this way. Adapting flow press servo valve and flow servo valve to concurrently control load system has its great advantage in restraining the superfluous force of the electro-hydraulic load simulator system, the performance such as load precision of system is enhanced greatly according to this method. Based on the system bond graph model, and by comparing the simulation curves and experiment curves, we can know that the simulation curves basically tally with the experiment curves, the bond graph models are validated right, which are flow press servo valve bond graph model and double valves concurrently control the electro-hydraulic load simulator system bond graph model. Simultaneity, the bond graph models in this paper take on generality, they are can be used on other aspects, such as other valve controlling cylinder system simulation, design and control strategy theory research.

scholarly journals Synthesis and Analysis of Three-Port DC/DC Converters with Two Bidirectional Ports Based on Power Flow Graph Technique

Energies ◽  
2021 ◽  
Vol 14 (18) ◽  
pp. 5751
Author(s):  
Hamzeh Aljarajreh ◽  
Dylan Dah-Chuan Lu ◽  
Yam P. Siwakoti ◽  
Chi K. Tse ◽  
K. W. See
Keyword(s):  
Power Flow ◽  
Analytical Tool ◽  
Flow Graph ◽  
Flow Diagrams

This paper presents a systematic topological study to derive all possible basic and non-isolated three-port converters (TPCs) using power flow diagrams. Unlike most reported TPCs with one bidirectional port, this paper considers up to two bidirectional ports and provides a comprehensive analytical tool. This tool acts as a framework for all power flow combinations, selection, and design. Some viable converter configurations have been identified and selected for further analysis.

Kinematic Analysis of an 8-Speed Bicycle Transmission Hub

2013 ◽  
Vol 479-480 ◽  
pp. 234-238 ◽  
Author(s):  
Yi Chang Wu ◽  
Pei Wun Ren ◽  
Li An Chen
Keyword(s):  
Kinematic Analysis ◽  
Power Flow ◽  
Planetary Gear ◽  
Speed Ratio ◽  
Flow Paths ◽  
Gear Teeth ◽  
Gear Mechanism ◽  
Flow Diagrams ◽  
Internal Gear ◽  
Planetary Gear Mechanism

A transmission hub is a speed changing mechanism which is an important device in the transmission system of bicycles. This paper presents the kinematic analysis of an 8-speed bicycle transmission hub by using the fundamental circuit method. First, a distributed-flow type planetary gear mechanism, which consists of two parallel-connected transmission units and one differential unit, and the corresponding clutch sequence table of an 8-speed transmission hub are introduced. Based on the fundamental circuits, four kinematic equations of the transmission hub are derived. Then, the speed ratio of each speed is formulated, which is a function of gear ratios of external and internal gear pairs. By submitting the numbers of gear teeth into these formulas, the value of speed ratio at each speed can be calculated. Finally, the power-flow diagrams at related speeds are presented to illustrate the power-flow paths of the transmission hub.

scholarly journals Power flow and efficiency analyses of dual planetary coupling mechanism based on bond graph theory

2018 ◽  
Vol 12 (2) ◽  
pp. JAMDSM0054-JAMDSM0054
Author(s):  
Jianjun HU ◽  
Wei ZHAO ◽  
Yi HAN ◽  
Zhihua HU ◽  
Yong ZHENG
Keyword(s):  
Graph Theory ◽  
Power Flow ◽  
Bond Graph ◽  
Coupling Mechanism ◽  
Bond Graph Theory

Systematic Model Decoupling Through Assessment of Power-Conserving Constraints: An Engine Dynamics Case Study

2004 ◽  
Author(s):  
Geoff Rideout ◽  
Jeffrey L. Stein ◽  
Loucas S. Louca
Keyword(s):  
Power Flow ◽  
Three Dimensional ◽  
Coupled Model ◽  
Graph Model ◽  
Bond Graph ◽  
Bond Graphs ◽  
Third Order ◽  
Engine Mount ◽  
The One

Simplified models for predicting engine mount forces have traditionally been developed based on the assumption that for a well-balanced low-speed engine, the reciprocating dynamics can be decoupled from the three-dimensional motion of the engine block. In this paper the simplification is done systematically, using a technique previously developed by the authors to search for decoupling within a model, and to partition models in which decoupling is found. Beginning with a fully-coupled bond graph model of a balanced in-line six-cylinder engine, bonds representing negligible constraint terms are found based on aggregate power flow, and are converted to modulated sources. Separate bond graphs joined by modulating signals result. The “driving” bond graph represents the reciprocating dynamics, and the “driven” bond graph represents motion of the block on its mounts. The partitions are smaller than the original model and are simulated individually to accurately predict the dominant third-order mount forces with significant computational savings. The decoupling is found without the modeler relying on traditional assumed forms of the one-way coupled model, and can be quantitatively tracked as the system parameters and inputs change.

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