Vision-guided grasping of unknown objects for service robots

Author(s):  
P.J. Sanz ◽  
A.P. Del Pobil ◽  
J.M. Inesta ◽  
G. Recatala
2021 ◽  
Vol 104 (1) ◽  
Author(s):  
Jing Xin ◽  
Caixia Dong ◽  
Youmin Zhang ◽  
Yumeng Yao ◽  
Ailing Gong

AbstractAiming at satisfying the increasing demand of family service robots for housework, this paper proposes a robot visual servoing scheme based on the randomized trees to complete the visual servoing task of unknown objects in natural scenes. Here, “unknown” means that there is no prior information on object models, such as template or database of the object. Firstly, an object to be manipulated is randomly selected by user prior to the visual servoing task execution. Then, the raw image information about the object can be obtained and used to train a randomized tree classifier online. Secondly, the current image features can be computed using the well-trained classifier. Finally, the visual controller can be designed according to the error of image feature, which is defined as the difference between the desired image features and current image features. Five visual positioning of unknown objects experiments, including 2D rigid object and 3D non-rigid object, are conducted on a MOTOMAN-SV3X six degree-of-freedom (DOF) manipulator robot. Experimental results show that the proposed scheme can effectively position an unknown object in complex natural scenes, such as occlusion and illumination changes. Furthermore, the developed robot visual servoing scheme has an excellent positioning accuracy within 0.05 mm positioning error.


2013 ◽  
Vol 133 (1) ◽  
pp. 18-27 ◽  
Author(s):  
Hisato Fukuda ◽  
Satoshi Mori ◽  
Katsutoshi Sakata ◽  
Yoshinori Kobayashi ◽  
Yoshinori Kuno

2020 ◽  
Vol 19 (10) ◽  
pp. 1965-1986
Author(s):  
T.A. Komkina ◽  
M.A. Nikonova ◽  
M.G. Dubinina

Subject. The article analyzes development trends in certain types of service robots, namely, hybrid UAVs, bionic prosthetic hands, robotic vacuum cleaners. Objectives. We focus on identifying the main trends in the development of certain types of service robots, building dynamic models of their technical indicators and models of dependence of their price and weight on absolute characteristics and technical parameters. Methods. The study employs methods of correlation and multiple regression analysis. The data of the IFR, the Remotely Piloted Aircraft System, and websites of robot manufacturers serve as the informational basis of the paper. Results. The modeling unveils positive correlation between the integrated indicator of the technical level of hybrid UAVs of convertiplane type and the wingspan. The analysis of modern bionic prosthetic hands shows that the developers focus on optimizing the structure of the prosthetic, however, as the functions of the hand improve, the weight of bionic hand increases. The main factors influencing the price of robot vacuum cleaners are their power, weight, and operating hours. Conclusions. The unit price of a complex indicator of the technical level of hybrid UAVs is lower than the corresponding indicator of fixed-wing UAVs, reflecting a greater efficiency of hybrid UAVs. The analysis of technical indicators of robotic prosthetics (using the case of bionic hands) shows that any improvement of functional characteristics leads to deterioration of weight. The analysis of technical and economic indicators of robotic vacuum cleaners reveals a positive correlation between the price and weight, operating hours and power.


ROBOT ◽  
2012 ◽  
Vol 34 (3) ◽  
pp. 337
Author(s):  
Zhiwei LIANG ◽  
Xin JIN ◽  
Songhao ZHU

2020 ◽  
Vol 11 (1) ◽  
pp. 1-18 ◽  
Author(s):  
Eduard Fosch-Villaronga ◽  
Adam Poulsen

AbstractThe creation and deployment of sex robots are accelerating. Sex robots are service robots that perform actions contributing directly towards improvement in the satisfaction of the sexual needs of a user. In this paper, we explore the potential use of these robots for elder and disabled care purposes,which is currently underexplored. Indeed, although every human should be able to enjoy physical touch, intimacy, and sexual pleasure, persons with disabilities are often not in the position to fully experience the joys of life in the same manner as abled people. Similarly, older adults may have sexual needs that public healthcare tend to ignore as an essential part of their well-being. We develop a conceptual analysis of how sex robots could empower persons with disabilities and older adults to exercise their sexual rights, which are too often disregarded in society. Our contribution seeks to understand whether sex robots could serve as a step forward in enhancing the care of (mainly but not exclusively) persons with disabilities and older adults. By identifying the potential need to incorporate sex within the concept of care, and by exploring the use of robot technology to ease its materialization, we hope to inform the policy debate around the regulation of robots and set the scene for further research.


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