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Variable gain haptic coupling for molecular simulation
- Source :
- WHC 2011-IEEE World Haptics Conference, WHC 2011-IEEE World Haptics Conference, Jun 2011, Istanbul, Turkey. pp.469-474, ⟨10.1109/WHC.2011.5945531⟩, World Haptics
- Publication Year :
- 2011
- Publisher :
- HAL CCSD, 2011.
-
Abstract
- International audience; Molecular interactions typically have a high dynamic range (HDR), combining short-range stiff repulsive effects with long-range, soft attractive and repulsive terms. As a result, faithful haptic rendering of such molecular interactions is both important and difficult, in particular in applications where the precise perception of molecular forces is necessary (e.g. in molecular docking simulations). Traditionally, teleoperation coupling using constant gain control schemes have limited applications since they are unable to transmit to users low attractive forces without truncating repulsive ones. Furthermore, constant scaling displacement induces either instability or time-consuming experiments (displacements are slow), which deteriorates the ease of manipulation. In this paper, we describe a variable gain haptic coupling method specifically designed to render high dynamic range (molecular) forces. The proposed method is evaluated by user tests on an experiment involving two water molecules. We observe that variable force amplification is widely appreciated, whereas variable displacement scaling is appropriated only for users familiar with haptic manipulation. A complex experiment on a HIV molecule is carried out using this variable gain system. Advantages and limitations of this approach are discussed.
- Subjects :
- Coupling
0209 industrial biotechnology
010304 chemical physics
Computer science
02 engineering and technology
Variable displacement
01 natural sciences
[INFO.INFO-MO]Computer Science [cs]/Modeling and Simulation
Displacement (vector)
020901 industrial engineering & automation
Control theory
0103 physical sciences
Teleoperation
Automatic gain control
Constant (mathematics)
High dynamic range
Simulation
Haptic technology
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- WHC 2011-IEEE World Haptics Conference, WHC 2011-IEEE World Haptics Conference, Jun 2011, Istanbul, Turkey. pp.469-474, ⟨10.1109/WHC.2011.5945531⟩, World Haptics
- Accession number :
- edsair.doi.dedup.....dafd40eff27961ae0a775678e2c41c07
- Full Text :
- https://doi.org/10.1109/WHC.2011.5945531⟩