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Cooperative Manipulation and Identification of a 2-DOF Articulated Object by a Dual-Arm Robot
KTH, Skolan för elektroteknik och datavetenskap (EECS), Robotik, perception och lärande, RPL. (RPL)ORCID-id: 0000-0003-3252-715X
KTH, Skolan för elektroteknik och datavetenskap (EECS), Robotik, perception och lärande, RPL. Dept. of Electrical Eng., Chalmers University of Technology.ORCID-id: 0000-0001-5129-342X
2018 (engelsk)Inngår i: 2018 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND AUTOMATION (ICRA) / [ed] IEEE, 2018, s. 5445-5451Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

In this work, we address the dual-arm manipula-tion of a two degrees-of-freedom articulated object that consistsof two rigid links. This can include a linkage constrainedalong two motion directions, or two objects in contact, wherethe contact imposes motion constraints. We formulate theproblem as a cooperative task, which allows the employment ofcoordinated task space frameworks, thus enabling redundancyexploitation by adjusting how the task is shared by the robotarms. In addition, we propose a method that can estimate thejoint location and the direction of the degrees-of-freedom, basedon the contact forces and the motion constraints imposed bythe object. Experimental results demonstrate the performanceof the system in its ability to estimate the two degrees of freedomindependently or simultaneously.

sted, utgiver, år, opplag, sider
2018. s. 5445-5451
Emneord [en]
Robotics, Dual-Arm, Manipulation, Estimation, Adaptive, Filtering
HSV kategori
Forskningsprogram
Datalogi
Identifikatorer
URN: urn:nbn:se:kth:diva-226562ISI: 000446394504016Scopus ID: 2-s2.0-85063142273ISBN: 978-1-5386-3081-5 (tryckt)OAI: oai:DiVA.org:kth-226562DiVA, id: diva2:1199313
Konferanse
IEEE International Conference on Robotics and Automation (ICRA), 2018
Prosjekter
SARAFun
Merknad

QC 20180423

Tilgjengelig fra: 2018-04-20 Laget: 2018-04-20 Sist oppdatert: 2019-10-28bibliografisk kontrollert
Inngår i avhandling
1. Dual-Arm Robotic Manipulation under Uncertainties and Task-Based Redundancy
Åpne denne publikasjonen i ny fane eller vindu >>Dual-Arm Robotic Manipulation under Uncertainties and Task-Based Redundancy
2019 (engelsk)Doktoravhandling, med artikler (Annet vitenskapelig)
Abstract [en]

Robotic manipulators are mostly employed in industrial environments, where their tasks can be prescribed with little to no uncertainty. This is possible in scenarios where the deployment time of robot workcells is not prohibitive, such as in the automotive industry. In other contexts, however, the time cost of setting up a classical robotic automation workcell is often prohibitive. This is the case with cellphone manufacturing, for example, which is currently mostly executed by human workers. Robotic automation is nevertheless desirable in these human-centric environments, as a robot can automate the most tedious parts of an assembly. To deploy robots in these environments, however, requires an ability to deal with uncertainties and to robustly execute any given task. In this thesis, we discuss two topics related to autonomous robotic manipulation. First, we address parametric uncertainties in manipulation tasks, such as the location of contacts during the execution of an assembly. We propose and experimentally evaluate two methods that rely on force and torque measurements to produce estimates of task related uncertainties: a method for dexterous manipulation under uncertainties which relies on a compliant rotational degree of freedom at the robot's gripper grasp point and exploits contact  with an external surface, and a cooperative manipulation system which is able to identify the kinematics of a two degrees of freedom mechanism. Then, we consider redundancies in dual-arm robotic manipulation. Dual-armed robots offer a large degree of redundancy which can be exploited to ensure a more robust task execution. When executing an assembly task, for instance, robots can freely change the location of the assembly in their workspace without affecting the task execution. We discuss methods that explore these types of redundancies in relative motion tasks in the form of asymmetries in their execution. Finally, we approach the converse problem by presenting a system which is able to balance measured forces and torques at its end-effectors by leveraging relative motion between them, while grasping a rigid tray. This is achieved through discrete sliding of the grasp points, which constitutes a novel application of bimanual dexterous manipulation.

sted, utgiver, år, opplag, sider
KTH Royal Institute of Technology, 2019. s. 40
Serie
TRITA-EECS-AVL ; 2019:73
HSV kategori
Identifikatorer
urn:nbn:se:kth:diva-263043 (URN)978-91-7873-331-6 (ISBN)
Disputas
2019-11-22, Room F3, Lindstedtsvägen 26, Stockholm, 14:00 (engelsk)
Opponent
Veileder
Merknad

QC 20191105

Tilgjengelig fra: 2019-11-05 Laget: 2019-10-28 Sist oppdatert: 2019-11-18bibliografisk kontrollert

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