FINGERTIP STRUCTURAL ANALYSIS–A SIMULATED DESIGN EVALUATION

2015 ◽  
Vol 76 (4) ◽  
Author(s):  
Jaafar, J. ◽  
Shauri, R. L. A.
Keyword(s):  
Structural Analysis ◽  
External Force ◽  
Force Control ◽  
Structural Changes ◽  
Permanent Deformation ◽  
Design Evaluation ◽  
Robot Hand ◽  
Load Cells ◽  
The Future

This paper discusses the result on structural analysis of a recently designed fingertip for a three-fingered robot hand. This analysis is necessary to understand the structural changes occur under certain range of external force acting on the fingertip. The key parameters to be observed are deformation and equivalent (von-misses) stress. These simulated tests had given good results since there was no permanent deformation occurred and no yielding happened even in the area that had been considered critical. The fingertip will be produced as a prototype and equipped with the miniature load cells for force control of the three-fingered robot hand in the future. 

The Structural Transformation of Narrative Advertising in Turkic Republics

2019 ◽  
pp. 108-120 ◽  
Author(s):  
Ömer Çakın
Keyword(s):  
Structural Analysis ◽  
Soviet Union ◽  
Structural Transformation ◽  
Structural Changes ◽  
The State ◽  
Narrative Structures ◽  
The Soviet Union ◽  
The Future

In Turkic Republics, which became independent from the Soviet Union in 1991, advertising has passed through various stages from history to the present. In the Soviet Union period, the advertising media of the state monopolized the advertising media. Turkish Republics, after the independence of all kinds of people and organizations, have adopted a structure where they can introduce their own products. This study focuses on the advertising media in the Turkish Republics and on the structural changes they have created in the advertising narrative. In this study, advertising texts are examined by applying structural analysis in post-independence Turkish Republics. The first chapter outlines the transformation of traditional advertising and advertising narrative from the Soviets to the present. In the second part of the study, based on the findings obtained in the analysis of the Turkish Republics, narrative structures in the sector are published. The work is complemented by a narrative and a conclusion on the future of advertising.

Love, Inc.

2019 ◽  
Author(s):  
Laurie Essig
Keyword(s):  
Climate Change ◽  
Global Climate Change ◽  
Structural Changes ◽  
Global Climate ◽  
Dating Apps ◽  
Sense Of Security ◽  
True Love ◽  
The Future ◽  
False Sense ◽  
Global Movements

In Love, Inc., Laurie Essig argues that love is not all we need. As the future became less secure—with global climate change and the transfer of wealth to the few—Americans became more romantic. Romance is not just what lovers do but also what lovers learn through ideology. As an ideology, romance allowed us to privatize our futures, to imagine ourselves as safe and secure tomorrow if only we could find our "one true love" today. But the fairy dust of romance blinded us to what we really need: global movements and structural changes. By traveling through dating apps and spectacular engagements, white weddings and Disney honeymoons, Essig shows us how romance was sold to us and why we bought it. Love, Inc. seduced so many of us into a false sense of security, but it also, paradoxically, gives us hope in hopeless times. This book explores the struggle between our inner cynics and our inner romantic.

scholarly journals Grasping Force Control of Multi-fingered Robot Hand based on Slip Detection Using Tactile Sensor

2007 ◽  
Vol 25 (6) ◽  
pp. 970-978 ◽  
Author(s):  
Daisuke Gunji ◽  
Takuma Araki ◽  
Akio Namiki ◽  
Aiguo Ming ◽  
Makoto Shimojo
Keyword(s):  
Force Control ◽  
Tactile Sensor ◽  
Robot Hand ◽  
Grasping Force ◽  
Slip Detection

scholarly journals Sectoral Volatility, Development, and Governance: A Case Study of Pakistan

2006 ◽  
Vol 45 (4II) ◽  
pp. 797-817
Author(s):  
Toseef Azid ◽  
Naeem Khaliq ◽  
Muhammad Jamil
Keyword(s):  
Growth Rate ◽  
Structural Change ◽  
Service Sector ◽  
Structural Changes ◽  
Agricultural Sector ◽  
Green Revolution ◽  
Rate Of Growth ◽  
Agriculture Industry ◽  
The Future

Development of overall economy of any country largely depends upon the characteristics of different prominent sectors such as agriculture, industry, services, etc. Sharp structural change in prominent sectors are experienced by the Pakistan’s economy during the last four decades, in which industrial and service sector have exhibited an extra ordinary rate of growth, while the agricultural sector did not shown that rate of growth which was experienced during the time of green revolution. Due to these structural changes in the prominent sectors volatility of growth rate has been experienced by the economy. To the extent that most of the recent volatility in growth rate of GDP can be attributed to the increasing share of the some volatility of the some prominent sectors, the analysis of their volatility can be useful in providing some enlightenment on the factors behind this phenomenon and its implications for the formulation of the policy in the future.

Pinpointed muscle force control via optimising human motion and external force

2012 ◽  
Vol 2 (3) ◽  
pp. 147 ◽  
Author(s):  
Ming Ding ◽  
Kotaro Hirasawa ◽  
Yuichi Kurita ◽  
Hiroshi Takemura ◽  
Hiroshi Mizoguchi ◽  
...  
Keyword(s):  
External Force ◽  
Force Control ◽  
Muscle Force ◽  
Human Motion

Force Controlled Manipulation of Biological Cells Using a Monolithic MEMS Based Nano-Micro Gripper

2012 ◽  
Author(s):  
Ali A. Abbasi ◽  
M. T. Ahmadian
Keyword(s):  
Liquid Medium ◽  
Force Control ◽  
Force Sensor ◽  
Rapid Response ◽  
Pid Controllers ◽  
Biological Cells ◽  
Matlab Software ◽  
Micro Gripper ◽  
The Future ◽  
Geometrical Dimensions

Nano-micro grippers are able to pick-transport-place the micro or nanometer–sized materials, such as manipulation of biological cells or DNA molecules in a liquid medium. This paper proposes a novel monolithic nano-micro gripper structure with two axis piezoresistive force sensor which its resolution is under nanoNewton. The results of the study have been obtained by the simulation of the proposed gripper structure in Matlab software. Motion of the gripper arm is produced by a voice coil actuator. The behavior of the cell has been derived using the assumptions in the literatures. Moreover, two simple PID controllers, one for control of the gripper motion and another for control of the force during manipulation of a biologic cell, have been implemented. Although the proposed gripper has not been fabricated, since the geometrical dimensions of the proposed gripper is the same as previously developed electrothermally actuated micro-nano gripper, the results of force control have been also compared with it. The simulated results with the very simple PID force controller which has a more rapid response than previously developed electrothermally actuated micro-nano gripper show that the designed gripper has the potential to be considered and fabricated for manipulation of biological cells in the future.

Position-based impedance force controller with sensorless force estimation

2019 ◽  
Vol 39 (3) ◽  
pp. 489-496 ◽  
Author(s):  
Jianjun Yuan ◽  
Yingjie Qian ◽  
Liming Gao ◽  
Zhaohan Yuan ◽  
Weiwei Wan
Keyword(s):  
Real Time ◽  
External Force ◽  
Force Control ◽  
Impedance Control ◽  
Surface Shape ◽  
Force Estimation ◽  
Shape Information ◽  
Content Type ◽  
Generalized Inverse Matrix ◽  
Surface Prediction

Purpose This paper aims to purpose an improved sensorless position-based force controller in gravitational direction for applications including polishing, milling and deburring. Design/methodology/approach The first issue is the external force/torque estimation at end-effector. By using motor’s current information and Moore-Penrose generalized inverse matrix, it can be derived from the external torques of every joints for nonsingular cases. The second issue is the force control strategy which is based on position-based impedance control model. Two novel improvements were made to achieve a better performance. One is combination of impedance control and explicit force control. The other one is the real-time prediction of the surface’s shape allowing the controller adaptive to arbitrary surfaces. Findings The result of validation experiments indicates that the estimation of external force and prediction of surface’s shape are credible, and the position-based constant contact force controller in gravitational direction is functional. The accuracy of force tracking is adequate for targeted applications such as polishing, deburring and milling. Originality/value The value of this paper lies in three aspects which are sensorless external force estimation, the combination of impedance control and explicit force control and the independence of surface shape information achieved by real-time surface prediction.

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