Title | ||
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Set-Based Tasks within the Singularity-Robust Multiple Task-Priority Inverse Kinematics Framework: General Formulation, Stability Analysis, and Experimental Results. |
Abstract | ||
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Inverse kinematics algorithms are commonly used in robotic systems to transform tasks to joint references, and several methods exist to ensure the achievement of several tasks simultaneously. The multiple task-priority inverse kinematics framework allows tasks to be considered in a prioritized order by projecting task velocities through the null spaces of higher-priority tasks. This paper extends this framework to handle set-based tasks, i.e., tasks with a range of valid values, in addition to equality tasks, which have a specific desired value. Examples of set-based tasks are joint limit and obstacle avoidance. The proposed method is proven to ensure asymptotic convergence of the equality task errors and the satisfaction of all high-priority set-based tasks. The practical implementation of the proposed algorithm is discussed, and experimental results are presented where a number of both set-based and equality tasks have been implemented on a 6 degree of freedom UR5, which is an industrial robotic arm from Universal Robots. The experiments validate the theoretical results and confirm the effectiveness of the proposed approach. |
Year | DOI | Venue |
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2016 | 10.3389/frobt.2016.00016 | FRONTIERS IN ROBOTICS AND AI |
Keywords | Field | DocType |
robotics,kinematic control,set-based control,task-priority,redundant systems | Obstacle avoidance,Convergence (routing),Robotic arm,Degrees of freedom (statistics),Mathematical optimization,Inverse kinematics,Computer science,Simulation,Order by,Artificial intelligence,Robot,Robotics | Journal |
Volume | ISSN | Citations |
3.0 | 2296-9144 | 11 |
PageRank | References | Authors |
0.69 | 14 | 5 |
Name | Order | Citations | PageRank |
---|---|---|---|
Signe Moe | 1 | 26 | 4.65 |
Antonelli Gianluca | 2 | 716 | 62.09 |
Andrew R. Teel | 3 | 2847 | 248.90 |
Kristin Ytterstad Pettersen | 4 | 402 | 42.59 |
Johannes Schrimpf | 5 | 11 | 0.69 |