Robohub.org
 

Human-like arm movements

by
06 August 2010



share this:

Many robots are required to move like humans. Human-like motion is useful to efficiently interact with humans and environments built for them, make realistic humanoids or replace actual limbs (prosthetics).

To this end, Artemiadis et al. propose a technique to generate anthropomorphic motion with a robot arm. The task consists in making the robot extremity reach a specific position in 3D in a human-like way. The challenge is that robots with many degrees of freedom can reach a specific point by following many different trajectories (redundant robots).

To choose what trajectory is more human-like, robots observe humans moving their arm (see figure below). This data is then used to create a probabilistic model (Bayesian Network) that describes how joints are related to each other (inter-joint dependencies). These dependencies are taken into account when planning the arm trajectory using inverse kinematics.

Using this technique, robots were able to replicate arm motions previously performed by humans and even generate new ones that had never been observed!




Sabine Hauert is President of Robohub and Associate Professor at the Bristol Robotics Laboratory
Sabine Hauert is President of Robohub and Associate Professor at the Bristol Robotics Laboratory





Related posts :



Our future could be full of undying, self-repairing robots – here’s how

Could it be that future AI systems will need robotic “bodies” to interact with the world? If so, will nightmarish ideas like the self-repairing, shape-shifting T-1000 robot from the Terminator 2 movie come to fruition? And could a robot be created that could “live” forever?
01 February 2023, by

Sensing with purpose

Fadel Adib uses wireless technologies to sense the world in new ways, taking aim at sweeping problems such as food insecurity, climate change, and access to health care.
29 January 2023, by

Robot Talk Episode 34 – Interview with Sabine Hauert

In this week's episode of the Robot Talk podcast, host Claire Asher chatted to Dr Sabine Hauert from the University of Bristol all about swarm robotics, nanorobots, and environmental monitoring.
28 January 2023, by

Special drone collects environmental DNA from trees

Researchers at ETH Zurich and the Swiss Federal research institute WSL have developed a flying device that can land on tree branches to take samples. This opens up a new dimension for scientists previously reserved for biodiversity researchers.
27 January 2023, by

The robots of CES 2023

Robots were on the main expo floor at CES this year, and these weren’t just cool robots for marketing purposes. I’ve been tracking robots at CES for more than 10 years, watching the transition from robot toys to real robots.
25 January 2023, by





©2021 - ROBOTS Association


 












©2021 - ROBOTS Association