IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS) Vancouver, BC, September 24, 2017
GRAVITY TY OFFLOAD TE TESTB TBEDS FOR FO SPACE ROBOTI TIC - - PowerPoint PPT Presentation
GRAVITY TY OFFLOAD TE TESTB TBEDS FOR FO SPACE ROBOTI TIC - - PowerPoint PPT Presentation
GRAVITY TY OFFLOAD TE TESTB TBEDS FOR FO SPACE ROBOTI TIC MISSION SIMULATI TION ORGANIZERS Craig Carignan University of Maryland, USA Giacomo Marani West Virginia University, USA Andr Schiele European Space Agency, The Netherlands
Previous Workshops
- ICRA 2012: “Robotic Satellite Servicing,” St. Paul, Minnesota
- ICRA 2015: “The Next Generation of Space Robotic Servicing
Technologies,” Seattle, Washington
Focused mainly on space robotic technology development.
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Space Robot Application Areas
- Satellite Servicing
- Assembly and Construction
- Orbital Debris Removal
- Planetary Exploration
- Asteroid Sample Retrieval
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Identified Key Technology Areas
- Advanced vision and mapping algorithms
- Navigation and rendezvous algorithms
- Autonomous grappling of uncooperative satellites/small bodies
- Dexterous manipulation, end-effectors, and specialized tools
- Operator interfaces and time delay compensation
- Ground simulation testbeds and validation
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Objectives for This Workshop
- Review the state-of-the-art in ground-based platforms for space
robotic mission simulation
- Share research and ideas in an effort to better which reduced gravity
simulation techniques work best for given application
- Identify new technologies that will enable more accurate simulation
- f reduced gravity environments on the ground
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Some Current Simulation Methods
- Parabolic flight
- Neutral buoyancy
simulation
- Air bearing platforms
- Counterweights with
tethers
- Robotic motion-based
platforms
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Parabolic Flight
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Neutral Buoyancy
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Ranger NBV performing HST servicing tasks at UMD’s Neutral Buoyancy Research Facility.
Air bearing platform at ESA’s ESTEC Centre.
Air Bearing Tables
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Counterbalance
Lunar Excursion Module Simulator (LEMS) in 1963.
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Cable robot simulator at the Max Planck Institute.
Robotic Motion-Based Platforms
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Reduced Gravity Limitations
25 sec micro-g, 2g load water drag planar workspace PARABOLIC FLIGHT MOTION PLATFORM AIR BEARING TABLE NEUTRAL BUOYANCY time-delay, robot resonance COUNTERWEIGHTS point loading, quasistatic
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Famous Validation Slip-Up
Initial bid to capture satellite fails By WILLIAM HARWOOD UPI Science Writer | May 10, 1992 SPACE CENTER, Houston -- A spacewalking astronaut wielding a 160-pound grapple tried to latch onto a disabled communications satellite Sunday, but the effort caused the wayward craft to start tumbling, blocking initial attempts to haul the craft aboard for repairs.
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After at least three unsuccessful attempts by astronaut Pierre Thuot to snag the satellite while floating on the end of the shuttle Endeavour's robot arm, commander Daniel Brandenstein broke off the exercise and backed away shortly after 6:30 p.m., leaving the Intelsat 6 communications satellite wobbling through space like a gyrating top.
http://www.airspacemag.com/videos/category/space-exploration/intelsat-rescue/
Intelsat 408 Training
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Training for the Intelsat capture task was performed using an inertially comparable spinning system on an air-bearing floor, with the crew operating in an inertially fixed 1-g
- environment. Inaccuracies in
the air bearing facility along with the inability to simulate
- ut-of-plane motion, may have
actually produced negative training for the flight crew.
Mistakes can be costly …
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Brewster Rockit
Schedule
09:00 Introduction 09:10 Session 1 Presentations (2) 10:00 Coffee Break 10:30 Session 2 Presentations (3) 11:45 Poster Session 12:30 Lunch 13:55 Session 3 Presentations (5) 16:00 Coffee Break & Poster Session 16:30 Discussion (Town Hall) 17:30 Adjourn
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Session 1 Presentations
09:10 Günter Niemeyer, Disney Research Robotic Simulators: Passivity, Performance, and Possibilities 09:35 Joshua Mehling, NASA Johnson Space Center Simulating Reduced Gravity: Robot Testing at NASA Johnson Space Center
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Session 2 Presentations
10:30 Kazuya Yoshida, Tohoku University
Air Bearing Testbed for Orbital Debris Removal and Asteroid Surface Locomotion
10:55 John Wen, RPI
Air Bearing Systems for Space Dynamics and Control Simulations
11:20 Marco De Stefano & Jordia Artigas, DLR
The DLR On-Orbit Servicing Simulator OOS-SIM: Reproducing Free-Floating Dynamics with Robotic Facilities
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Session 3 Presentations
13:55 Brian Roberts, NASA Goddard Space Flight Center Gravity Offload Techniques Utilized at NASA’s Goddard Space Flight Center 14:20 Bernd Maediger, Airbus DS GmbH Bremen Robotic Satellite Servicing Testbeds for Capture and Re-Fueling Operations 14:45 Raja Mukherji & John Lymer, MDA Corp. Testing of Dextre Force Control Operations Using a Ground Test Bed
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Session 3 Presentations (cont’d)
15:10 Glen Henshaw, U.S. Naval Research Lab Microgravity Simulation Environments and Space Robotics Validation at NRL 15:35 François Conti, Force Dimension Breaking New Ground in Human Exploration
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Town Hall Discussion
- Logistics: lessons learned
- No single testbed alone can validate the on-orbit dynamics
- How much cross validation is needed to buy down risk?
- Technical: how to improve each platform
- Better actuators & sensors for motion-based platform
- Can we leverage technology from other fields? (e.g., haptics)
- Programmatic:
- How to choose platform(s) within budget?
- How to make sure we’re not fooling ourselves
- Intelsat VI example
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