With advantages of large working space and high flexibility, mobile manipulators has been rapidly developed and applied to manufacturing system and assembly shop etc. But how to ensure their motion safety is the key problem in practical applications. To accurately predict the obstacle-avoidance state of the mobile manipulator can provide important information for its motion trajectory/path planning. For the above problem, this work proposes three distance estimation models to characterize the obstacle-avoidance state based on hybrid geometric descriptions (polygon/polyhedron, polygonal/circular slices) for three motion stages, which are the motion of the mobile device, pre-operating pose adjustment motion and operating motion of the manipulator. Three models are respectively the rough estimation model, the general estimation model and the fine estimation model of the shortest distance between robot and surrounding obstacles for each motion stage. The calculation accuracy and efficiency are analyzed during simulation. This work can provide algorithm basis for the safe motion control of mobile manipulators under open three-dimensional (3D) environments.
Obstacle-Avoidance State Characterization Models Based on Hybrid Geometric Descriptions for Mobile Manipulators
Lect.Notes Computer
International Conference on Intelligent Robotics and Applications ; 2023 ; Hangzhou, China July 05, 2023 - July 07, 2023
2023-10-16
12 pages
Article/Chapter (Book)
Electronic Resource
English
Mobile Manipulator , Distance Estimation Models , Obstacle Avoidance Computer Science , Artificial Intelligence , Software Engineering/Programming and Operating Systems , Computer Applications , User Interfaces and Human Computer Interaction , Computer Communication Networks , Special Purpose and Application-Based Systems
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