Force feedback measurements of surface forces

2007 ◽  
pp. 162-168 ◽  
Author(s):  
J. L. Parker ◽  
A. M. Stewart
Keyword(s):  
Force Feedback ◽  
Surface Forces

Control Design and Passivity Analysis for Scaled One-Dimensional Bilateral Teleoperated Nanomanipulation

2009 ◽  
Author(s):  
Mohammad Motamedi ◽  
Mohammad Taghi Ahmadian ◽  
Gholam Reza Vossoughi ◽  
Farid Tajaddodianfar
Keyword(s):  
Visual Information ◽  
Force Feedback ◽  
Control Design ◽  
Surface Forces ◽  
Nanometer Scale ◽  
Inertial Forces ◽  
One Dimensional ◽  
Control Approach ◽  
Passivity Analysis ◽  
Teleoperation System

In this paper, a novel control approach for one-dimensional bilateral teleoperated nanomanipulation system is proposed. While manipulating objects with a nanomanipulator, real time visual feedback is not available. So, force feedback is used to compensate for the lack of visual information. Since nanometer scale forces are dominated by surface forces instead of inertial forces as in macro world, scaling of nanoforces is one of the major issues of teleoperation system. The Hertz elastic contact model is used to model the interactions between the slave robot and the environment. The proposed approach uses the simple proportional derivative control, i.e., the master and slave robots are connected via a virtual spring and damper. The passivity of the combination of control blocks and communication is demonstrated via the control passivity concept. The outcome is a robust platform to enforce master-slave position coordination and perform teleoperated nanomanipulation on a broad range of materials. Simulations are performed to confirm the proposed control approach.

Decoration of specific sites on freeze-fractured membranes

1978 ◽  
Vol 36 (2) ◽  
pp. 140-141
Author(s):  
H. Gross ◽  
H. Moor
Keyword(s):  
Pure Water ◽  
Freeze Fracture ◽  
Chemical Properties ◽  
Surface Forces ◽  
Sulfate Pentahydrate ◽  
Copper Sulfate Pentahydrate ◽  
Physico Chemical ◽  
Water Of Hydration ◽  
Small Container ◽  
Binding Forces

Fracturing under ultrahigh vacuum (UHV, p ≤ 10-9 Torr) produces membrane fracture faces devoid of contamination. Such clean surfaces are a prerequisite foe studies of interactions between condensing molecules is possible and surface forces are unequally distributed, the condensate will accumulate at places with high binding forces; crystallites will arise which may be useful a probes for surface sites with specific physico-chemical properties. Specific “decoration” with crystallites can be achieved nby exposing membrane fracture faces to water vopour. A device was developed which enables the production of pure water vapour and the controlled variation of its partial pressure in an UHV freeze-fracture apparatus (Fig.1a). Under vaccum (≤ 10-3 Torr), small container filled with copper-sulfate-pentahydrate is heated with a heating coil, with the temperature controlled by means of a thermocouple. The water of hydration thereby released enters a storage vessel.

Bilateral Force Feedback Control for a Vehicle-Type Tele-Mobility System

2013 ◽  
Vol 133 (8) ◽  
pp. 795-803
Author(s):  
Kazuki Nagase ◽  
Shutaro Yorozu ◽  
Takahiro Kosugi ◽  
Yuki Yokokura ◽  
Seiichiro Katsura
Keyword(s):  
Feedback Control ◽  
Force Feedback ◽  
Vehicle Type ◽  
Mobility System

DAYA TAHAN ROTAN YANG DIAWETKAN DENGAN CUKA KAYU GALAM TERHADAP SERANGAN BUBUK Dinoderus minutus Farb.

2010 ◽  
Vol 2 (2) ◽  
pp. 8
Author(s):  
Evy Setiawati
Keyword(s):  
Force Feedback ◽  
Test Results ◽  
Dry Powder ◽  
Degree Of Protection ◽  
Wood Vinegar ◽  
Dinoderus Minutus ◽  
Test Parameters ◽  
Feedback Method ◽  
Reduction Percentage ◽  
Insect Attack

Rattan on frequently attacked by the powder post beetle (Tellu, 2001). The prevention of dry powder attacks is done by preservation. The increasing resistant of rattan from insect attack can be done by an environmentally friendly preservative, the Galam wood vinegar. This research  aims to determine the most effective concentration of preservative that shows the lowest attacks level of D. Farb minutus powder. The rattan used is green rattan (Calamus sp.) The concentration of preservative that are used:10%, 40%, 70% and 100%. The testing of dry powder attack  used force feedback method. The effectiveness test parameters of wood vinegar to dry powder attacks  included degree of protection Dinoderus minutus Farb. powder,  reduction percentage of rattan weight and the mortality of dry powder Dinoderus sp for toxicological testing of wood vinegar. The test results showed that the degree of protection powder in rattan growing along with the increased concentration of preservatives. The higher the concentration of  wood vinegar, the smaller the reduction of rattan weight and the higher the mortality rate of dry powder. Keywords: resistant of rattan, wood vinegar, Dinoderus minutus.

Model of Force Feedback Gripper System

ROBOT ◽  
2011 ◽  
Vol 33 (4) ◽  
pp. 475-481 ◽  
Author(s):  
Niu WANG ◽  
Qiang TIAN ◽  
Liudong QIU ◽  
Peng GAO
Keyword(s):  
Force Feedback
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