Model of a Slip Sensor

1993 ◽  
Vol 207 (1) ◽  
pp. 55-64 ◽  
Author(s):  
F Eghtedari ◽  
S H Hopkins ◽  
D T Pham
Keyword(s):  
Solid State ◽  
Computer Modelling ◽  
Design Parameters ◽  
Slip Sensor ◽  
Fringe Patterns ◽  
Switching Characteristics ◽  
Main Components ◽  
Photoelastic Sensor ◽  
Slip Detection

This paper describes the mathematical and computer modelling of a photoelastic sensor for slip detection. The main components of the sensor are a photoelastic transducer and a solid state camera. When under stress, the photoelastic transducer generates optical fringe patterns which are captured digitally by the camera. The model developed encompasses the mechanical and optical behaviours of the photoelastic transducer and the switching characteristics of the camera pixels. The model has been employed to study the effects of different design parameters on the sensor's slip resolution.

Research on the Optimal Design Method of the Main Components for the Wheelchair Pickup

2013 ◽  
Vol 791-793 ◽  
pp. 799-802
Author(s):  
Ya Ping Wang ◽  
H.R. Shi ◽  
L. Gao ◽  
Z. Wang ◽  
X.Y. Jia ◽  
...  
Keyword(s):  
Parametric Design ◽  
Design Method ◽  
Basic Function ◽  
Design Parameters ◽  
Algorithm Optimization ◽  
Optimization Analysis ◽  
Research Designs ◽  
Optimal Design Method ◽  
Main Components

With the increasing of the aging of population all over the world, and With the inconvenience coming from diseases and damage, there will be more and more people using the wheelchair as a tool for transport. When it cant be short of the wheelchair in the daily life, the addition of the function will bring the elevation of the quality of life for the unfortunate. Staring with this purpose, the research designs a pickup with planetary bevel gear for the wheelchair. After determining the basic function of the wheelchair aids, the study determines the design parameters by using the knowledge of parametric design and completes the model for the system with Pro/E, on the other hand, it completes key components optimization analysis which is based on genetic algorithm optimization.

Dynamic Switching of 3kV 4H-SiC Charge-Balanced Junction Barrier Schottky (JBS) Diodes

2020 ◽  
Vol 1004 ◽  
pp. 939-944
Author(s):  
Xiang Zhou ◽  
Collin W. Hitchcock ◽  
Reza Ghandi ◽  
Alexander Bolotnikov ◽  
T. Paul Chow
Keyword(s):  
Design Parameters ◽  
Device Design ◽  
Dynamic Switching ◽  
Switching Characteristics

We have performed detailed dynamic switching measurements for 3kV 4H-SiC Charge-Balanced (CB) junction barrier Schottky (JBS) diodes [1,2] and studied their dependence on device design parameters. We have done forward and reverse recovery characterizations and found unusual switching characteristics in these CB-JBS diodes. These switching characteristics are explained based on the design and layout of the devices.

scholarly journals Computer simulation of metal co-doping in lithium niobate

2014 ◽  
Vol 470 (2171) ◽  
pp. 20140406 ◽  
Author(s):  
Romel M. Araujo ◽  
Mário E. G. Valerio ◽  
Robert A. Jackson
Keyword(s):  
Computer Simulation ◽  
Solid State ◽  
Lithium Niobate ◽  
Computer Modelling ◽  
Defect Chemistry ◽  
Experimental Results ◽  
Solid State Reactions ◽  
Co Doping ◽  
Nonlinear Properties ◽  
Electro Optic

Lithium niobate, LiNbO 3 , is an important technological material with good electro-optic, acousto-optic, elasto-optic, piezoelectric and nonlinear properties. Computer modelling provides a useful means of determining the properties of the material, including its defect chemistry, and the effect of doping on the structure. In this work, double-doped LiNbO 3 was studied, and the energetics of the solid-state reactions leading to incorporation of the dopants was calculated. The following combinations of dopants were studied: Fe and Cu; Ce and Cu; Ce and Mn; Fe and Rh; and Ru and Fe. For most of these combinations, the co-doping process decreases the energy required for incorporation of the dopants, and the final defect configurations are consistent with experimental results, where available.

1A1-H11 Development of High Speed and Sensitivity Slip Sensor : Method of Slip Detection using Pressure Conductive Rubber

2008 ◽  
Vol 2008 (0) ◽  
pp. _1A1-H11_1-_1A1-H11_2
Author(s):  
Seiichi Teshigawara ◽  
Tomohiro Nishinaga ◽  
Masatoshi Ishikawa ◽  
Makoto Shimojo
Keyword(s):  
High Speed ◽  
Conductive Rubber ◽  
Slip Sensor ◽  
Slip Detection

A Flexible Tactile Capacitive Sensor for Slip Detection

2011 ◽  
Author(s):  
Jinah Chung ◽  
Baek-chul Kim ◽  
H. R. Choi ◽  
H. P. Moon ◽  
Y. K. Lee ◽  
...  
Keyword(s):  
Tactile Sensor ◽  
Capacitive Sensor ◽  
Robot Hand ◽  
Sensor Device ◽  
Sensor Structure ◽  
Slip Sensor ◽  
Slip Detection

A tactile sensor for slip detection is necessary for humanlike grasping in robot hand. This paper reports a capacitive tactile slip sensor that can detect slip on the surface of the sensor structure. The newly developed capacitive slip sensor uses acrlyro-nitrile butadien rubber (NBR) as substrate. The presented sensor device in this paper has fingerprint -like structures that are similar with the role of the human’s fingerprint. Movement of the structure that attached on surface of substrate arise capacitance changes, and these are used to detect slip. We carried out slip experiment by prototype of capacitive slip sensor and slip was successfully detected.

Introductory Lecture Computer modelling as a technique in solid state chemistry

1997 ◽  
Vol 106 ◽  
pp. 1-40 ◽  
Author(s):  
C. Richard A. Catlow ◽  
Lutz Ackermann ◽  
Robert G. Bell ◽  
Furio Corà ◽  
C—David H. Gay ◽  
...  
Keyword(s):  
Solid State ◽  
Computer Modelling ◽  
Solid State Chemistry ◽  
Introductory Lecture

scholarly journals Optimization of absorption systems: case of the refrigerators and heat pumps

2019 ◽  
Vol Volume 30 - 2019 - MADEV... ◽  
Author(s):  
René Tchinda ◽  
Paiguy Armand Ngouateu Wouagfack
Keyword(s):  
Performance Optimization ◽  
Heat Pumps ◽  
Coefficient Of Performance ◽  
Entropy Generation Rate ◽  
Design Parameters ◽  
Working Fluid ◽  
Ecological Design ◽  
Ecological Performance ◽  
Heating Load ◽  
Main Components

The new thermo-ecological performance optimization of absorption is investigated by taking the ecological coefficient of performance ECOP as an objective function. ECOP has been expressed in terms of the temperatures of the working fluid in the main components of the system. The maximum of ECOP and the corresponding optimal temperatures of the working fluid and other optimal performance design parameters such as coefficient of performance, specific cooling load of absorption refrigerators, specific heating load of absorption heat pumps, specific entropy generation rate and the distributions of the heat exchanger areas have been derived analytically. The obtained results may provide a general theoretical tool for the ecological design of absorption refrigerators and heat pumps.

scholarly journals Switching characteristics of a 2-way-cartridge valve. (1st report. Effects of main valve design parameters).

1990 ◽  
Vol 21 (3) ◽  
pp. 296-302
Author(s):  
Shigeru IKEO ◽  
Kazumi ITO ◽  
Koji TAKAHASHI ◽  
Ryuji MIURA ◽  
Kunio KANDA
Keyword(s):  
Design Parameters ◽  
Valve Design ◽  
Switching Characteristics

OUTLINE THE TEACHING OF COMPUTING IN ENGLAND AND THE TEACHING OF INFORMATON TECHNOLOGIES AND COMPUTER MODELLING IN BULGARIA

2020 ◽  
Vol 11 (1) ◽  
pp. 46-52
Author(s):  
Rumyana Karadimitrova ◽  
Keyword(s):  
Primary School ◽  
Educational System ◽  
Education System ◽  
Computer Modelling ◽  
Age Groups ◽  
Ministry Of Education ◽  
National Programmes ◽  
Key Competences ◽  
Main Components

The paper presents the main components and an overview of the educational subject „Computing in the education system” in England. It is considered as a classification of the educational key stages by students ages in England. All Computing national programmes, which have to be followed from the schools when they create their own curriculums, have been presented in different age groups. In addition, the paper summarises the changes in the educational system for „Informational Technologies” and „Computer modelling” in primary school in Bulgaria. It includes the key competences for student’s development according to competences approach framework from the Bulgarian Ministry of Education.

Universal Computer Model for Studying the Dynamics of a Two-Motor Scraper Conveyor

2021 ◽  
Vol 64 (2) ◽  
pp. 56-64
Author(s):  
Dmitry Shprekher ◽  
◽  
Gennady Babokin ◽  
Alexandr Zelenkov ◽  
Dmitry Ovsyannikov ◽  
...  
Keyword(s):  
Computer Model ◽  
Design Stage ◽  
Design Parameters ◽  
Coal Face ◽  
Mass System ◽  
Early Design Stage ◽  
Proposed Model ◽  
Wide Range ◽  
Scraper Conveyor ◽  
Main Components

The article proposes to study the dynamics of the scraper conveyor (SC), which is one of the main components of the mechanized complex of the coal face, to use a universal computer model in which the multi-mass system of the traction body (TB) with concentrated parameters is replaced by a script in the form of a MATLAB function, the code for modeling the system of equations of the TB in which is developed using the Matlab pro-gramming language. With the help of Simulink blocks, models of electric motors, transmissions, drive sprockets, as well as the elementary masses of TB are created. This solution made it possible to change the number of elementary masses in a wide range, and to ensure the study of dynamic processes in the electromechanical system of the SC with a predetermined accuracy. The most common type of multi-motor conveyor is considered: two-drive, with head and end drives connected through transmissions and sprockets by an infinite chain with scrapers. The simulation of the direct start modes at full load and empty load was carried out. The results showed that the proposed model provided 2 times faster simulation of the developed model compared to the model of a conveyor made up of the same number of individual elementary masses, while the accuracy of the simulation in terms of the speed of movement of the chain is 5% in the interval with the real conveyor. It is concluded that it is necessary to develop an effective method of controlling the head and tail drives of the scraper conveyor in order to equal their load. The results of the simulation can be used to predict the fatigue life and determine the optimal pretensioning force at an early design stage, when only a few design parameters are known.

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