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Title: From path to trajectory deformation
Authors: Kurniawati, H. 
Fraichard, T.
Issue Date: 2007
Citation: Kurniawati, H., Fraichard, T. (2007). From path to trajectory deformation. IEEE International Conference on Intelligent Robots and Systems : 159-164. ScholarBank@NUS Repository.
Abstract: Path deformation is a technique that was introduced to generate robot motion wherein a path, that has been computed beforehand, is continuously deformed on-line in response to unforeseen obstacles. This paper introduces the first trajectory deformation scheme as an effort to improve path deformation. The main idea is that by incorporating the time dimension and hence information on the obstacles' future behaviour, quite a number of situations where path deformation would fail can be handled. The trajectory deformation scheme presented operates in two steps, ie, a collision avoidance step and a connectivity maintenance step, hence its name 2-Step-Trajectory-Deformer (2-STD). In the collision avoidance step, repulsive forces generated by the obstacles deform the trajectory so that it remains collision-free. The purpose of the connectivity maintenance step is to ensure that the deformed trajectory remains feasible, ie, that it satisfies the robot's kinematic and/or dynamic constraints. Moreover, unlike path deformation wherein spatial deformation only takes place, 2-STD features both spatial and temporal deformation. It has been tested successfully on a planar robot with double integrator dynamics moving in dynamic environments. ©2007 IEEE.
Source Title: IEEE International Conference on Intelligent Robots and Systems
ISBN: 1424409128
DOI: 10.1109/IROS.2007.4399235
Appears in Collections:Staff Publications

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