Proceedings ArticleDOI
Automatic determination of topological contacts in the presence of sensing uncertainties
Jing Xiao
- pp 65-70
TLDR
A method for obtaining sufficient topological contact information from the current position/orientation data for the objects and geometric models involved, taking into account sensing uncertainties, is introduced to achieve automatic recognition of unknown contact situations in spite of uncertainties.Abstract:
A method for obtaining sufficient topological contact information from the current position/orientation data for the objects and geometric models involved, taking into account sensing uncertainties, is introduced. The information obtained can serve as a basis for further and more accurate extraction of the topological contact data using additional sensing means, such as vision and force/moment sensing. The aim is to achieve automatic recognition of unknown contact situations in spite of uncertainties. The method is discussed in detail for contacts between 2-D polygons and can be extended to 3-D polyhedra. The key idea is to discretize the continuous region of uncertain configurations of an object so that the topological contacts formed at those finite and discrete configurations constitute all possible contact situations taking into account uncertainties. To accomplish this, some general geometric constraints on the objects, which are easy to satisfy, are imposed. >read more
Citations
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Pose estimation for planar contact manipulation with manifold particle filters
TL;DR: The manifold particle filter is introduced as a principled way of solving the state estimation problem when the state moves between multiple manifolds of different dimensionality and avoids particle starvation during contact by adaptively sampling particles that reside on the contact manifold from the dual proposal distribution.
References
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Journal ArticleDOI
Interference detection among solids and surfaces
TL;DR: This paper presents a computer representation for solids and surfaces and algorithms which carry out interference checking among objects so represented, represented as polyhedra or as piecewise planar surfaces.
Proceedings ArticleDOI
Motion constraints from contact geometry: representation and analysis
R. Mattikalli,Pradeep K. Khosla +1 more
TL;DR: A method to determine constraints on translational and rotational motion of planar and 3-D objects from their contact geometry is presented and can be used effectively to automate the evaluation of motion constraints.
Proceedings ArticleDOI
Recognition of contact state based on geometric model
Shinichi Hirai,Kazuaki Iwata +1 more
TL;DR: The estimation of contact states by using force information acquired in the mating process is discussed, and a method for generating the state classifiers based on geometric models of workpieces on a computer is developed.
Proceedings ArticleDOI
Dealing with unexpected situations during the execution of robot motions
TL;DR: A situation analyzer that enables the moving object to acquire information on a contact situation is presented that uses the nominal world model including information on the magnitude of the uncertainties in order to get hypotheses on the geometric entities involved in the contact.
Journal ArticleDOI
Contact prediction and reasoning for compliant robot motions
H.A. ElMaraghy,S. Payandeh +1 more
TL;DR: A method for interpreting the measured contact forces during compliant robot motions using kinematic screws is presented, using domain-specific rules combined with partial a priori knowledge of mating parts geometry and interpreted force signals to reason and make inferences about the initial contact configuration.