Assume a Spherical Chicken: Analytic Constraints, Inertia Tensor Information, and Wielded Rod Length Perception

2019 ◽  
Vol 51 (6) ◽  
pp. 698-714 ◽  
Author(s):  
Patrick A. Cabe
Keyword(s):  
Inertia Tensor ◽  
Length Perception

Inertia tensor and weight-percept models of length perception by static holding.

2000 ◽  
Vol 26 (3) ◽  
pp. 1133-1147 ◽  
Author(s):  
Matthew Stroop ◽  
M. T. Turvey ◽  
Paula Fitzpatrick ◽  
Claudia Carello
Keyword(s):  
Inertia Tensor ◽  
Length Perception

Length perception of horizontal and vertical bisected lines

2009 ◽  
Vol 74 (2) ◽  
pp. 196-206 ◽  
Author(s):  
Pom Charras ◽  
Juan Lupiáñez
Keyword(s):  
Length Perception

scholarly journals Reversal of a visual illusion of length perception

1976 ◽  
Vol 7 (1) ◽  
pp. 63-64 ◽  
Author(s):  
W. H. Tedford ◽  
C. F. Gray
Keyword(s):  
Visual Illusion ◽  
Length Perception

The Evaluation of Moments of Regions With Piecewise-Linearly Approximated Boundaries via Line Integration

1989 ◽  
Author(s):  
J. Angeles ◽  
M. J. Al-Daccak
Keyword(s):  
Euclidean Space ◽  
Three Dimensional ◽  
Inertia Tensor ◽  
Divergence Theorem ◽  
Dimensional Euclidean Space ◽  
Repeated Application ◽  
The Subject ◽  
First Moment

Abstract The subject of this paper is the computation of the first three moments of bounded regions imbedded in the three-dimensional Euclidean space. The method adopted here is based upon a repeated application of Gauss’s Divergence Theorem to reduce the computation of the said moments — volume, vector first moment and inertia tensor — to line integration. Explicit, readily implementable formulae are developed to evaluate the said moments for arbitrary solids, given their piecewise-linearly approximated boundary. An example is included that illustrates the applicability of the formulae.

Optimal Slewing Maneuvers For Inertia Tensor Observability

2022 ◽  
Author(s):  
John C. Helmuth ◽  
Kyle J. DeMars
Keyword(s):  
Inertia Tensor

Controlled inertia tensor of a transformable spacecraft

2021 ◽  
Author(s):  
R.P. Simonyants ◽  
N.A. Alekhin ◽  
V.A. Tarasov
Keyword(s):  
Attitude Control ◽  
Dynamic Properties ◽  
Operating Conditions ◽  
Inertia Tensor ◽  
Simplified Model ◽  
Diagonal Form ◽  
Transformation Mechanism ◽  
External Disturbances ◽  
Type Transformation ◽  
Gravitational Moment

A simplified model of a transformable spacecraft is considered, including a rod-type transformation mechanism with movable weights. The mechanism can be used to adapt the dynamic properties of the spacecraft to the environment or the operating conditions of on-board systems, for example, to counter the moments of external disturbances during attitude control and angular stabilization. By changing the position of the transformation mechanism, the spacecraft inertia tensor can be put in diagonal form, which makes it possible to exclude the force interconnections between the channels and to eliminate the constant component of the gravitational moment. For a simplified model of the transformation mechanism, we establish the analytical dependence of the components of the inertia tensor on the parameters determining the position of the transformation mechanism. It is shown that by adjusting the moving mass, which is 0.5% of the entire spacecraft mass, we obtain the spacecraft configuration that ensures the diagonality of the inertia tensor.

scholarly journals The Louder, the Longer: Object Length Perception Is Influenced by Loudness, but Not by Pitch

Vision ◽  
2019 ◽  
Vol 3 (4) ◽  
pp. 57 ◽  
Author(s):  
Pia Hauck ◽  
Heiko Hecht
Keyword(s):  
Sound Pressure Level ◽  
Visual Information ◽  
Visual Cues ◽  
Sound Pressure ◽  
Pressure Level ◽  
Acoustic Properties ◽  
Size Estimation ◽  
Length Perception ◽  
Length Estimation ◽  
Reliable Source

Sound by itself can be a reliable source of information about an object’s size. For instance, we are able to estimate the size of objects merely on the basis of the sound they make when falling on the floor. Moreover, loudness and pitch are crossmodally linked to size. We investigated if sound has an effect on size estimation even in the presence of visual information, that is if the manipulation of the sound produced by a falling object influences visual length estimation. Participants watched videos of wooden dowels hitting a hard floor and estimated their lengths. Sound was manipulated by (A) increasing (decreasing) overall sound pressure level, (B) swapping sounds among the different dowel lengths, and (C) increasing (decreasing) pitch. Results showed that dowels were perceived to be longer with increased sound pressure level (SPL), but there was no effect of swapped sounds or pitch manipulation. However, in a sound-only-condition, main effects of length and pitch manipulation were found. We conclude that we are able to perceive subtle differences in the acoustic properties of impact sounds and use them to deduce object size when visual cues are eliminated. In contrast, when visual cues are available, only loudness is potent enough to exercise a crossmodal influence on length perception.

Role of the inertia tensor in haptically perceiving where an object is grasped.

1994 ◽  
Vol 20 (2) ◽  
pp. 276-285 ◽  
Author(s):  
Christopher C. Pagano ◽  
J. M. Kinsella-Shaw ◽  
Paul E. Cassidy ◽  
M. T. Turvey
Keyword(s):  
Inertia Tensor
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