scholarly journals Combined control of guaranteed search for a moving object with geometric constraints.

2016 ◽  
Vol 69 (1) ◽  
pp. 53-65
Author(s):  
V.V. Avetisyan ◽  
V.S. Stepanyan
Keyword(s):  
Moving Object ◽  
Geometric Constraints ◽  
Guaranteed Search ◽  
Combined Control

OPTIMAL CONTROL OF DYNAMIC SEARCH OF A MOVING OBJECT IN A RECTANGULAR DOMAIN

2019 ◽  
Vol 53 (3 (250)) ◽  
pp. 177-182
Author(s):  
V.V. Avetisyan ◽  
V.S. Stepanyan
Keyword(s):  
Optimal Control ◽  
Energy Consumption ◽  
Electric Current ◽  
Search Time ◽  
Rectangular Domain ◽  
Moving Object ◽  
Dynamic Object ◽  
Spatial Motion ◽  
Guaranteed Search ◽  
Dynamic Search

The problem of optimal control of the spatial motion of a dynamic object in order to find a moving object performing a simple motion in a rectangular domain on the plane is considered. A method for controlling the motion of the searching object, as well as the corresponding law of variation of the electric current in the light source circuit, ensuring the detection of the sought object with minimal light energy consumption for a guaranteed search time, are proposed.

scholarly journals A New RGB-D SLAM Method with Moving Object Detection for Dynamic Indoor Scenes

2019 ◽  
Vol 11 (10) ◽  
pp. 1143 ◽  
Author(s):  
Runzhi Wang ◽  
Wenhui Wan ◽  
Yongkang Wang ◽  
Kaichang Di
Keyword(s):  
Object Detection ◽  
Moving Objects ◽  
Moving Object Detection ◽  
Moving Object ◽  
Geometric Constraints ◽  
The Public ◽  
Localization And Mapping ◽  
Real World Applications ◽  
Indoor Scenes ◽  
Practical Performance

Simultaneous localization and mapping (SLAM) methods based on an RGB-D camera have been studied and used in robot navigation and perception. So far, most such SLAM methods have been applied to a static environment. However, these methods are incapable of avoiding the drift errors caused by moving objects such as pedestrians, which limits their practical performance in real-world applications. In this paper, a new RGB-D SLAM with moving object detection for dynamic indoor scenes is proposed. The proposed detection method for moving objects is based on mathematical models and geometric constraints, and it can be incorporated into the SLAM process as a data filtering process. In order to verify the proposed method, we conducted sufficient experiments on the public TUM RGB-D dataset and a sequence image dataset from our Kinect V1 camera; both were acquired in common dynamic indoor scenes. The detailed experimental results of our improved RGB-D SLAM were summarized and demonstrate its effectiveness in dynamic indoor scenes.

A High Immersive Telexistence System of the Moving Object with Full Circumference Image and Inertial Force Presentation

2017 ◽  
Vol 137 (9) ◽  
pp. 1192-1200
Author(s):  
Tatsuya Hayakawa ◽  
Daijiro Yoshimura ◽  
Mitsuyuki Saito ◽  
Yasuhide Kobayashi ◽  
Wataru Wakita
Keyword(s):  
Inertial Force ◽  
Moving Object

Parallel Glide: A Fundamentally Different Type of Dislocation Motion in Ultrathin Metal Films

2003 ◽  
Vol 779 ◽  
Author(s):  
T. John Balk ◽  
Gerhard Dehm ◽  
Eduard Arzt
Keyword(s):  
Thermal Cycling ◽  
Grain Boundaries ◽  
Film Surface ◽  
Metal Films ◽  
Geometric Constraints ◽  
Film Stress ◽  
Diffusional Creep ◽  
Creep Model ◽  
Substrate Interface ◽  
Film Substrate

AbstractWhen confronted by severe geometric constraints, dislocations may respond in unforeseen ways. One example of such unexpected behavior is parallel glide in unpassivated, ultrathin (200 nm and thinner) metal films. This involves the glide of dislocations parallel to and very near the film/substrate interface, following their emission from grain boundaries. In situ transmission electron microscopy reveals that this mechanism dominates the thermomechanical behavior of ultrathin, unpassivated copper films. However, according to Schmid's law, the biaxial film stress that evolves during thermal cycling does not generate a resolved shear stress parallel to the film/substrate interface and therefore should not drive such motion. Instead, it is proposed that the observed dislocations are generated as a result of atomic diffusion into the grain boundaries. This provides experimental support for the constrained diffusional creep model of Gao et al.[1], in which they described the diffusional exchange of atoms between the unpassivated film surface and grain boundaries at high temperatures, a process that can locally relax the film stress near those boundaries. In the grains where it is observed, parallel glide can account for the plastic strain generated within a film during thermal cycling. One feature of this mechanism at the nanoscale is that, as grain size decreases, eventually a single dislocation suffices to mediate plasticity in an entire grain during thermal cycling. Parallel glide is a new example of the interactions between dislocations and the surface/interface, which are likely to increase in importance during the persistent miniaturization of thin film geometries.

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