Experimental Testing and Identification of Laser Diode Dynamic Model

2011 ◽  
Author(s):  
Wen-feng Wu ◽  
Wen-dong Zou ◽  
Fei Guo ◽  
Xiao-juan Li
Keyword(s):  
Dynamic Model ◽  
Laser Diode ◽  
Experimental Testing

Experimental testing and validation of the dynamic model of a magneto-solid damper for vibration control

2022 ◽  
Vol 166 ◽  
pp. 108479
Author(s):  
Mohsen Amjadian ◽  
Anil K. Agrawal ◽  
Christian E. Silva ◽  
Shirley J. Dyke
Keyword(s):  
Vibration Control ◽  
Dynamic Model ◽  
Experimental Testing

Modeling and Experimental Testing of Hoverboard Dynamic Behavior

2017 ◽  
Author(s):  
Arnoldo Castro ◽  
William Singhose ◽  
Xiaoshu Liu ◽  
Khalid Sorensen ◽  
Eun Chan Kwak
Keyword(s):  
Dynamic Model ◽  
Dynamic Behavior ◽  
Motion Capture ◽  
Environmental Conditions ◽  
Experimental Testing ◽  
Motion Capture Data ◽  
Control Laws ◽  
Operator Action ◽  
The Stability ◽  
Unexpected Behavior

Self-balancing human transporters are naturally unstable. However, when coupled with sophisticated control laws, these machines can provide mobility within a finite stability envelope. Challenging environmental conditions, or unanticipated operator action, can cause these machines to exhibit unexpected behavior. In an effort to better understand the behavior of these systems inside and outside the stability envelope, a dynamic model of a hoverboard is presented. Motion-capture data is also presented in which an operator’s interactions with the hoverboard were recorded.

Dynamic Modeling and Experimental Testing of a Piano Action Mechanism

2005 ◽  
Vol 1 (1) ◽  
pp. 47-55 ◽  
Author(s):  
Martin Hirschkorn ◽  
John McPhee ◽  
Stephen Birkett
Keyword(s):  
Rigid Body ◽  
Dynamic Model ◽  
Dynamic Modeling ◽  
Experimental Testing ◽  
Individual Action ◽  
Action Mechanism ◽  
Friction Forces ◽  
Multibody Dynamic ◽  
Main Action ◽  
Grand Piano

A model for a grand piano action is proposed in this paper. The multibody dynamic model treats each of the five main action components (key, whippen, jack, repetition lever, and hammer) as a rigid body, and incorporates a contact model to determine the normal and friction forces at 13 locations between each of the contacting bodies. All parameters in the model are directly measured from experiments on individual action components, allowing the model to be used as a prototyping tool for actions that have not yet been designed or built. The behavior of the model was compared to the behavior of an experimental grand piano action and found to be very accurate for high force blows, and reasonably accurate for low force blows.

Performance Evaluation of a Dynamic Model of a Photovoltaic Module for Real-Time Maximum Power Tracking

2012 ◽  
pp. 464-490
Author(s):  
M. S. Alam ◽  
A. T. Alouani
Keyword(s):  
Real Time ◽  
Dynamic Model ◽  
Experimental Testing ◽  
Average Power ◽  
Maximum Power ◽  
Photovoltaic Module ◽  
Parameter Variations ◽  
Maximum Power Tracking ◽  
Future Work

This case study deals with the modeling and maximum power tracking of a stand-alone photovoltaic (PV) power generator. A dynamic model of a solar cell has been developed, simulated, and validated using experimental data. Effects of parameter variations have been accounted for in the dynamic model. The dynamic model developed in MATLAB®/Simulink® environment is embedded in the LabVIEW® environment for real time hardware in the loop verification of the simulation results. It was found that the actual real-time maximum power that a PV can produce is significantly different from the average power provided by the manufacturer. Preliminary experimental testing showed that one can extract as much as 20% more power from the PV than what is suggested by the manufacturer. The three week long experiment is documented, and the model is then validated through the design of experiment. Finally, the conclusions of the case study are outlined and the future work is proposed.

Dynamic Modelling and Experimental Testing of a Piano Action Mechanism

2005 ◽  
Author(s):  
Martin C. Hirschkorn ◽  
John McPhee ◽  
Stephen Birkett
Keyword(s):  
Rigid Body ◽  
Dynamic Model ◽  
Experimental Testing ◽  
Dynamic Modelling ◽  
Individual Action ◽  
Action Mechanism ◽  
Friction Forces ◽  
Multibody Dynamic ◽  
Main Action ◽  
Grand Piano

A new model for a grand piano action is proposed in this paper. The multibody dynamic model treats each of the five main action components (key, whippen, jack, repetition lever, and hammer) as a rigid body, and incorporates a contact model to determine the normal and friction forces at 13 locations between each of the contacting bodies. All parameters in the model are directly measured from experiments on individual action components, allowing the model to be used as a prototyping tool for actions that have not yet been designed or built. The behaviour of the model was compared to the behaviour of an experimental grand piano action and found to be very accurate for high force blows, and reasonably accurate for low force blows.

Dynamic Behaviour of Flexible Mechanical Couplings Under General Misalignment Conditions

2004 ◽  
Author(s):  
Giuseppe Catania ◽  
Alberto Maggiore
Keyword(s):  
Transfer Function ◽  
Dynamic Model ◽  
Dynamic Behaviour ◽  
Experimental Testing ◽  
Numerical Results ◽  
Transfer Function Model ◽  
Function Model ◽  
Higher Harmonics ◽  
Moment Vector ◽  
Transmitted Force

A complete dynamic model of flexible couplings is presented, and a study of the dynamic actions transmitted between two generally oriented shafts is shown. Numerical results concerning transmitted force spectra show that second and higher harmonics can generally be present, depending on the particular misalignment conditions. Moreover, every component of the resulting force and moment vector seems to be differently influenced by these conditions. Experimental testing was also done, to better understand the problem involved. Correlation between experimental measured velocities and numerically-computed transmitted forces was also proposed. A filtering transfer function model was defined and experimentally evaluated, and some results are given.

Short-term volume and turgor regulation in yeast

2008 ◽  
Vol 45 ◽  
pp. 147-160 ◽  
Author(s):  
Jörg Schaber ◽  
Edda Klipp
Keyword(s):  
Dynamic Model ◽  
Volume Change ◽  
Volume Regulation ◽  
Time Course ◽  
Osmotic Shock ◽  
Intracellular Concentration ◽  
Short Term ◽  
Hydrodynamic Property ◽  
Turgor Regulation ◽  
Thermodynamic Framework

Volume is a highly regulated property of cells, because it critically affects intracellular concentration. In the present chapter, we focus on the short-term volume regulation in yeast as a consequence of a shift in extracellular osmotic conditions. We review a basic thermodynamic framework to model volume and solute flows. In addition, we try to select a model for turgor, which is an important hydrodynamic property, especially in walled cells. Finally, we demonstrate the validity of the presented approach by fitting the dynamic model to a time course of volume change upon osmotic shock in yeast.

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