Goal-related planning constraints in bimanual grasping and placing of objects

2008 ◽  
Vol 188 (4) ◽  
pp. 541-550 ◽  
Author(s):  
Charmayne M. L. Hughes ◽  
Elizabeth A. Franz
2011 ◽  
Vol 138 (1) ◽  
pp. 111-118 ◽  
Author(s):  
Charmayne M.L. Hughes ◽  
Paola Reißig ◽  
Christian Seegelke

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Trevor Lee-Miller ◽  
Marco Santello ◽  
Andrew M. Gordon

AbstractSuccessful object manipulation, such as preventing object roll, relies on the modulation of forces and centers of pressure (point of application of digits on each grasp surface) prior to lift onset to generate a compensatory torque. Whether or not generalization of learned manipulation can occur after adding or removing effectors is not known. We examined this by recruiting participants to perform lifts in unimanual and bimanual grasps and analyzed results before and after transfer. Our results show partial generalization of learned manipulation occurred when switching from a (1) unimanual to bimanual grasp regardless of object center of mass, and (2) bimanual to unimanual grasp when the center of mass was on the thumb side. Partial generalization was driven by the modulation of effectors’ center of pressure, in the appropriate direction but of insufficient magnitude, while load forces did not contribute to torque generation after transfer. In addition, we show that the combination of effector forces and centers of pressure in the generation of compensatory torque differ between unimanual and bimanual grasping. These findings highlight that (1) high-level representations of learned manipulation enable only partial learning transfer when adding or removing effectors, and (2) such partial generalization is mainly driven by modulation of effectors’ center of pressure.


Symmetry ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 360
Author(s):  
Aihua Chen ◽  
Benquan Yang ◽  
Yueli Cui ◽  
Yuefen Chen ◽  
Shiqing Zhang ◽  
...  

In order to save people’s shopping time and reduce labor cost of supermarket operations, this paper proposes to design a supermarket service robot based on deep convolutional neural networks (DCNNs). Firstly, according to the shopping environment and needs of supermarket, the hardware and software structure of supermarket service robot is designed. The robot uses a robot operating system (ROS) middleware on Raspberry PI as a control kernel to implement wireless communication with customers and staff. So as to move flexibly, the omnidirectional wheels symmetrically installed under the robot chassis are adopted for tracking. The robot uses an infrared detection module to detect whether there are commodities in the warehouse or shelves or not, thereby grasping and placing commodities accurately. Secondly, the recently-developed single shot multibox detector (SSD), as a typical DCNN model, is employed to detect and identify objects. Finally, in order to verify robot performance, a supermarket environment is designed to simulate real-world scenario for experiments. Experimental results show that the designed supermarket service robot can automatically complete the procurement and replenishment of commodities well and present promising performance on commodity detection and recognition tasks.


1999 ◽  
Vol 6 (4) ◽  
pp. 298-310 ◽  
Author(s):  
Martin S. Rice ◽  
Alison J. Alaimo ◽  
Jennifer A. Cook

2012 ◽  
Vol 50 (14) ◽  
pp. 3392-3402 ◽  
Author(s):  
Rachel M. Foster ◽  
Urs Kleinholdermann ◽  
Silke Leifheit ◽  
Volker H. Franz

2007 ◽  
Vol 412 (2) ◽  
pp. 179-184 ◽  
Author(s):  
Paulo Barbosa Freitas ◽  
Vennila Krishnan ◽  
Slobodan Jaric

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