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Georg v. Wichert

7 accepted papers

2022

Constraint-based Task Specification and Trajectory Optimization for Sequential Manipulation

IROS 2022poster

To economically deploy robotic manipulators the programming and execution of robot motions must be swift. To this end, we propose a novel, constraint-based method to intuitively specify sequential manipulation tasks and to compute time-optimal robot motions for such a task specification. Our approac…

Cited by 7SourceScholar
2019

Modeling and Planning Manipulation in Dynamic Environments

ICRA 2019poster

In this paper we propose a new model for sequential manipulation tasks that also considers robot dynamics and time-variant environments. From this model we automatically derive constraint-based controllers and use them as steering functions in a kinodynamic manipulation planner. The resulting plan i…

Cited by 44SourceScholar
2019

Planning Reactive Manipulation in Dynamic Environments

IROS 2019poster

When robots perform manipulation tasks, they need to determine their own movement, as well as how to make and break contact with objects in their environment. Reasoning about the motions of robots and objects simultaneously leads to a constrained planning problem in a high-dimensional state-space. A…

Cited by 31SourceScholar
2019

Robust, Compliant Assembly with Elastic Parts and Model Uncertainty

IROS 2019poster

In this paper, we present an approach to generate robot motions for robust parts assembly. The computation of motions for parts assembly usually requires an exact model of all relevant objects. Generating detailed object models, including friction and dynamics, is often complex and time-consuming, e…

Cited by 6SourceScholar
2019

State Estimation in Contact-Rich Manipulation

ICRA 2019poster

This paper introduces a Bayesian state estimator for contact-rich manipulation tasks with application in non-prehensile manipulation, industrial assembly or in-hand localization. The core idea of our approach is to explicitly model both the contact dynamics and a torque-based robot controller as par…

Cited by 23SourceScholar
2018

Robust, Compliant Assembly via Optimal Belief Space Planning

ICRA 2018poster

In automated manufacturing, robots must reliably assemble parts of various geometries and low tolerances. Ideally, they plan the required motions autonomously. This poses a substantial challenge due to high-dimensional state spaces and non-linear contact-dynamics. Furthermore, object poses and model…

Cited by 33SourceScholar
2017

Optimal, sampling-based manipulation planning

ICRA 2017poster

When robots perform manipulation tasks, they need to determine their own movement, as well as how to grasp and release an object. Reasoning about the motion of the robot and the object simultaneously leads to a multi-modal planning problem in a high-dimensional configuration space. In this paper we…

Cited by 68SourceScholar