iMoby

Intelligent Mobility

Source: DFKI GmbH
Source: DFKI GmbH
Scientific Leader:
 
Project leader:
Dr.-Ing. Jakob Schwendner
Dr.-Ing. Sylvain Joyeux
 
Contact person:

Navigation algorithms for unknown or badly known terrains: using the robot body-sensing capabilities to improve navigation robustness.

Duration: 01.04.2009 till 30.06.2012
Donee: DFKI GmbH
Sponsor: Federal Ministry of Economics and Technology
German Aerospace Center e.V.
Grant number: This project is funded by the Space Agency of the German Aerospace Center with federal funds of the Federal Ministry of Economics and Technology (BMWi) in accordance with the parliamentary resolution of the German Parliament, grant no. 50RA0907
Application Field: Space Robotics
SAR- & Security Robotics
Related Robots: ASGUARD III
Advanced Security Guard V3
ASGUARD IV
Advanced Security Guard V4
Related Software: MARS
Machina Arte Robotum Simulans

Project details

The ASGUARD robot climbs a 40 degree slope in a sand quarry (very loose terrain) (Source: DFKI GmbH)
Asguard v4 (Source: DFKI GmbH)

In the Intelligent Mobility project, DFKI RIC Bremen deals with the four main issues in autonomous navigation: robot control, mapping, localization and decision-making.

One quite classical problem with current navigation approaches is that the robot can have illogical information about his underground, for example. The originality of this project is to use body-sensing capabilities (like touch, vibration, motor efforts) to improve navigation capabilities. Contrary to most approaches, DFKI RIC Bremen will solve this problem by fully integration of information the robot body provides for navigation. The system will therefore be able to detect physically impossible estimations.

DFKI RIC Bremen has already developed several autonomous robotic systems. One of them is the successfully proven and tested platform ASGUARD. The project team will first integrate all the necessary sensors on this platform. Ways to control ASGUARD optimally on various terrains types (rubber, rocks, concrete) and high slopes will be studied. Finally, the team will use its body-sensing capabilities for terrain recognition. Recognizing the terrain based on how it “feels”: hard or soft, rough or flat, … .

In a second part, the project will focus on the integration of body sensing in localization and mapping. The main problem here is that robots need to know their position well to build a good map and they needs to know the map well to estimate their position in it. To solve that cross-dependency, a specific class of algorithms already exists: the SLAM (Simultaneous Localization And Mapping) algorithms. This project will give birth to embodied SLAM (eSLAM) algorithms, where the SLAM approaches will be improved by using the information coming from the robot’s body

Finally, the DFKI RIC Bremen will study the supervision of autonomous navigation: the ability to detect problems and correct them before they become critical. This includes also the ability for the robot to make informed decisions about the paths it should take, as for instance deciding to cross a bridge instead of using ASGUARD’s swimming capabilities.

Videos

ASGUARD v4

Die aktuelle Version 4 von ASGUARD bei ersten Tests im Gelände

iMoby: Einfache Geschwindigkeitskontrolle vs. Rad-Synchronisation

Einfache Geschwindigkeitskontrolle vs. Rad-Synchronisation

ASGUARD v2: Intelligente Mobilität (Final Promotion)

Finales Promotion Video von Asguard v2 im iMoby Projekt.

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Source: Jakob Schwendner, DFKI GmbH
3D point cloud of the DFKI building from the test track
3D point cloud of the DFKI building from the test track (Source: Jakob Schwendner, DFKI GmbH)
How sensing the feet contacts improves the knowledge of where objects are (here on stairs)
How sensing the feet contacts improves the knowledge of where objects are (here on stairs) (Source: Jakob Schwendner, DFKI GmbH)
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