Bond Graph Modeling and Analysis of Active Differential Kinematics

2008 ◽  
Author(s):  
Josˇko Deur ◽  
Matthew Hancock ◽  
Francis Assadian
Keyword(s):  
Comparative Analysis ◽  
Bond Graph ◽  
Modeling And Analysis ◽  
Graph Method ◽  
Operating Modes ◽  
Graph Modeling ◽  
Torque Vectoring ◽  
Bond Graph Modeling ◽  
And Performance

This paper describes the kinematic structures of Active Limited Slip Differential (ALSD) and different concepts of Torque Vectoring Differentials (TVD) (superposition clutch concept, stationary clutch concept, and 4WD concept). The bond graph method is used to derive the models of ALSD/TVD kinematics. Based on the developed models, a comparative analysis of active differential operating modes and performance is conducted.

Bond Graph Modeling and Analysis of HEV System Based on Ravigneaux Planetary Mechanism

2013 ◽  
Vol 724-725 ◽  
pp. 1402-1408
Author(s):  
Li He Xi ◽  
Hong Wei Chen ◽  
Xin Zhang
Keyword(s):  
Bond Graph ◽  
Structural Form ◽  
Graph Models ◽  
Modeling And Analysis ◽  
Electric System ◽  
Operating Modes ◽  
Graph Modeling ◽  
Time Requirements ◽  
Bond Graph Modeling ◽  
Planetary Mechanism

The bond graph method is used to analyse and model dynamics of hybrid electric system based on Ravigneaux Planetary Mechanism. Bond graph models are built in different structural form, general equations of torque and speed are derived, and operating modes achieved in different structural form are in consideration. At the same time, requirements of control system in different operating modes are illustrated and analysed, which help lay the foundations for modeling and simulation of HEV system based on Ravigneaux Planetary Mechanism.

Dynamic Model of Dual Clutch Lever-Based Electromechanical Actuator

2011 ◽  
Author(s):  
Vladimir Ivanovic´ ◽  
Josˇko Deur ◽  
Milan Milutinovic´ ◽  
H. Eric Tseng
Keyword(s):  
Experimental Data ◽  
Dynamic Model ◽  
Model Validation ◽  
Bond Graph ◽  
Test Rig ◽  
Electromechanical Actuator ◽  
Actuator Dynamics ◽  
Operating Modes ◽  
Graph Modeling ◽  
Bond Graph Modeling

The paper presents a dynamic model of a dual clutch lever-based electromechanical actuator. Bond graph modeling technique is used to describe the clutch actuator dynamics. The model is parameterized and thoroughly validated based on the experimental data collected by using a test rig. The model validation results are used for the purpose of analysis of the actuator behavior under typical operating modes.

Modeling and Analysis of Automatic Transmission Engagement Dynamics-Linear Case

2005 ◽  
Vol 128 (2) ◽  
pp. 263-277 ◽  
Author(s):  
Joško Deur ◽  
Jahan Asgari ◽  
Davor Hrovat ◽  
Petar Kovač
Keyword(s):  
Computer Simulations ◽  
Automatic Transmission ◽  
Planetary Gear ◽  
Torque Converter ◽  
Bond Graph ◽  
Friction Model ◽  
Linear Case ◽  
Modeling And Analysis ◽  
Graph Modeling ◽  
Bond Graph Modeling

A control-oriented model of a typical four-speed automatic transmission is developed by using the bond graph modeling method. The planetary gear set model utilizes the Karnopp friction model for hydraulic and one-way clutches, in order to provide a favorable computing efficiency. The full gear set model is reduced for various phases of the park/reverse and park/drive engagements. The reduced gear set models and linearized torque converter model are used as a basis for an algebraic analysis of the engagement dynamics. The analysis is originally conducted for the basic case of fully applied brake, and it is then extended by an analysis of the influence of wheel dynamics in the brake-off case. The analysis results are verified by computer simulations and experiments.

Modeling and Analysis of Soft Contact in Robotic Grasping Using Bond Graph Methods

2011 ◽  
Vol 189-193 ◽  
pp. 1786-1792
Author(s):  
A. Khurshid ◽  
A. Ghafoor ◽  
M.A. Malik
Keyword(s):  
Viscoelastic Material ◽  
Bond Graph ◽  
Contact Forces ◽  
System Stability ◽  
Modeling And Analysis ◽  
Graph Modeling ◽  
Novel Approach ◽  
Bond Graph Modeling ◽  
The Stability ◽  
Soft Finger

Soft fingers contribute to dexterous grasping on account of the area contact and high friction involved. This paper presents a novel approach in modeling of soft contacts between soft fingertip and object using viscoelastic material and analyses its characteristics employing BondGraph Methods (BGM). The fingers are made viscoelastic by using springs and dampers. Detailed bond graph modeling of the contact phenomenon with two soft-finger contacts considered to be placed against each other on the opposite sides of the grasped object as is generally the case in a manufacturing environment is presented. The stiffness of the springs is exploited in order to achieve the stability in the soft-grasping which includes friction between the soft finger contact surfaces and the object. It is shown in the paper that the system stability depends on the viscoelastic material properties of the soft interface. Method of root locus is used to analyze this phenomenon. The paper shows how the weight of the object moving downward is controlled by the friction between the fingers and the object during the application of contact forces by varying the damping and the stiffness in the soft finger.

Modeling and Analysis of Active Differential Dynamics

2010 ◽  
Vol 132 (6) ◽  
Author(s):  
Joško Deur ◽  
Vladimir Ivanović ◽  
Matthew Hancock ◽  
Francis Assadian
Keyword(s):  
Model Complexity ◽  
Traction Control ◽  
Modeling And Analysis ◽  
Response Characteristics ◽  
Graph Modeling ◽  
Torque Vectoring ◽  
Bond Graph Modeling ◽  
Overall Performance ◽  
Vehicle Dynamics Control ◽  
Different Levels

Active differentials are used to improve the overall performance of traction control and vehicle dynamics control systems. This paper presents the development of a unified mathematical model of active differential dynamics using the bond graph modeling technique. The study includes active limited slip differential and various common types of torque vectoring differentials. Different levels of model complexity are considered, starting from a second-order model with lumped input and output inertia toward higher-order models including the gear inertia and half-shaft compliance. The model is used for a theoretical analysis of drivability and time response characteristics of the active differential dynamics. The analysis is illustrated by simulation results.

Basis for bond-graph modeling in chemical engineering

2007 ◽  
pp. 69-74 ◽  
Author(s):  
Françoise Couenne ◽  
Christian Jallut ◽  
Laurent Lefèvre ◽  
Yann Le Gorrec ◽  
Bernhard Maschke
Keyword(s):  
Chemical Engineering ◽  
Bond Graph ◽  
Graph Modeling ◽  
Bond Graph Modeling
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