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Christoph Ledermann

12 accepted papers

2024

Planning with Learned Subgoals Selected by Temporal Information

ICRA 2024poster

Path planning in a changing environment is a challenging task in robotics, as moving objects impose time-dependent constraints. Recent planning methods primarily focus on the spatial aspects, lacking the capability to directly incorporate time constraints. In this paper, we propose a method that lev…

Cited by 1SourceScholar
2023

Combining Measurement Uncertainties with the Probabilistic Robustness for Safety Evaluation of Robot Systems

IROS 2023poster

In this paper, we present a method to engage measurement uncertainties with the probabilistic robustness to one system uncertainty measure. Providing a metric indicating the potential occurrence of dangerous situations is highly essential for safety-critical robot applications. Due to the difficulty…

Cited by 2SourceScholar
2023

Hazard Analysis of Collaborative Automation Systems: A Two-layer Approach based on Supervisory Control and Simulation

ICRA 2023poster

Safety critical systems are typically subjected to hazard analysis before commissioning to identify and analyse potentially hazardous system states that may arise during operation. Currently, hazard analysis is mainly based on human reasoning, past experiences, and simple tools such as checklists an…

Cited by 2SourceScholar
2023

Upper Bounds for Localization Errors in 2D Human Pose Estimation

IROS 2023poster

Obtaining reliable detections of a human is crucial for many safety-related robotic tasks. This can be done by human pose estimation methods, which predict the position of several different keypoints of the human body. In most cases, recent approaches based on neural networks produce ‘good’ results,…

Cited by 1SourceScholar
2022

HIRO: Heuristics Informed Robot Online Path Planning Using Pre-computed Deterministic Roadmaps

IROS 2022poster

With the goal of efficiently computing collisionfree robot motion trajectories in dynamically changing environments, we present results of a novel method for Heuristics Informed Robot Online Path Planning (HIRO). Dividing robot environments into static and dynamic elements, we use the static part fo…

Cited by 3SourceScholar
2022

Testing Robot System Safety by Creating Hazardous Human Worker Behavior in Simulation

RA-L 2022

We introduce a novel simulation-based approach to identify hazards that result from unexpected worker behavior in human-robot collaboration. Simulation-based safety testing must take into account the fact that human behavior is variable and that human error can occur. When only the <italic xmlns:mml

Cited by 19SourceScholar
2021

A Real-Time-Capable Closed-Form Multi-Objective Redundancy Resolution Scheme for Seven-DoF Serial Manipulators

RA-L 2021

Using a closed-form inverse kinematics solution for motion planning has many advantages compared to traditional numerical approaches, most notably much faster computation times and better suitability for real-time applications. Steady progress has been made to develop an analytic inverse kinematics

Cited by 22SourceScholar
2020

Using Diverse Neural Networks for Safer Human Pose Estimation: Towards Making Neural Networks Know When They Don’t Know

IROS 2020poster

In recent years, human pose estimation has seen great improvements by the use of neural networks. However, these approaches are unsuitable for safety-critical applications such as human-robot interaction (HRI), as no guarantees are given whether a produced detection is correct or not and false detec…

Cited by 3SourceScholar
2019

Robotics Education and Research at Scale: A Remotely Accessible Robotics Development Platform

ICRA 2019poster

This paper introduces the KUKA Robot Learning Lab at KIT - a remotely accessible robotics testbed. The motivation behind the laboratory is to make state-of-the-art industrial lightweight robots more accessible for education and research. Such expensive hardware is usually not available to students o…

Cited by 19SourceScholar