ISME January 11, 2016 Design of robotic hands and grippers for underwater manipulation tasks Claudio Melchiorri DEI – Department of Electrical, Electronic and Information Engineering University of Bologna, Italy
ISME
January 11, 2016
Design of robotic hands and grippers for underwater manipulation tasks
Claudio Melchiorri DEI – Department of Electrical, Electronic and Information Engineering
University of Bologna, Italy
Summary
l Hands for underwater applications
l UAV (Sherpa)
L'Ateneo, in attuazione degli articoli 3 e 34 della Costituzione della Repubblica Italiana, si adopera affinché il pieno esercizio del diritto allo studio non sia impedito da ostacoli di ordine economico e sociale e affinché l'impegno e il merito siano costantemente riconosciuti e premiati. Statuto di Ateneo, Principi di indirizzo, Art. 2 comma 1
Robot Hands
4
L.A.R. - Group Expertise
l The research group in robotics is active since the early 80’s, with interdisciplinary competencies (automatic control, mechanics, hw/sw design, computer science, motion control)
l About 35-40 researchers (staff, post-doc, PhD students) l Several robotic prototypes have been designed and realized: grippers,
articulated hands, mobile robots, serial/parallel manipulators, telemanipulation systems, haptic devices, biomedical robots, UAVs, sensors, actuators, hw/sw control systems, …
UB Robotic Hands/Grippers: Designed for a number of applications
Some of them are reference in the research community
Robot Hands
• 1986-1990: UBH 1
UB Hands: a short history
• 1986-1990: UBH 1 • 1992-1995: UBH 2
UB Hands: a short history
• 1986-1990: UBH 1 • 1992-1995: UBH 2
UB Hands: a short history
• 1986-1990: UBH 1 • 1992-1995: UBH 2 • 1998-2000: ASI Gripper
UB Hands: a short history
• 1986-1990: UBH 1 • 1992-1995: UBH 2 • 1998-2000: ASI Gripper • 2002-2005: UBH 3
UB Hands: a short history
• 1986-1990: UBH 1 • 1992-1995: UBH 2 • 1998-2000: ASI Gripper • 2002-2005: UBH 3 • 2008-2012: UBH 4
(Dexmart)
UB Hands: a short history
UBH4: sensors
Force (tension) sensors Position sensors
Tactile sensors
In cooperation with SUN – Seconda Università di Napoli (C. Natale, S. Pirozzi, G. De Maria)
All the sensors are based on the same technology: optoelectronics
• 1986-1990: UBH 1 • 1992-1995: UBH 2 • 1998-2000: ASI Gripper • 2002-2005: UBH 3 • 2008-2012: UBH 4 • 2010-2012: TRIDENT
Gripper
UB Hands: a short history
Tactile sensors
Each sensor: 1 dof
3 sensors for each fingertip
Based on on optoelectronic components: • low power • low noise • simplified electronics • simple installation
Photodetector
LED
Tactile sensors
• 1986-1990: UBH 1 • 1992-1995: UBH 2 • 1998-2000: ASI Gripper • 2002-2005: UBH 3 • 2008-2012: UBH 4 • 2010-2012: TRIDENT • 2013-2014: MARIS 1
UB Hands: a short history
• 1986-1990: UBH 1 • 1992-1995: UBH 2 • 1998-2000: ASI Gripper • 2002-2005: UBH 3 • 2008-2012: UBH 4 • 2010-2012: TRIDENT • 2013-2014: MARIS 1 • 2014-2015: MARIS 2
UB Hands: a short history
BaseConnettore
RS
Cover
Flessibi
PCB
• 1986-1990: UBH 1 • 1992-1995: UBH 2 • 1998-2000: ASI Gripper • 2002-2005: UBH 3 • 2008-2012: UBH 4 • 2010-2012: TRIDENT • 2013-2014: MARIS 1 • 2014-2015: MARIS 2
UB Hands: a short history
linear
sensorobject
load ce
linearmotor 1
motor 2
6-axis F/T sensor: • fingertip • wrist
• 1986-1990: UBH 1 • 1992-1995: UBH 2 • 1998-2000: ASI Gripper • 2002-2005: UBH 3 • 2008-2012: UBH 4 • 2010-2012: TRIDENT • 2013-2014: MARIS 1 • 2014-2015: MARIS 2 • 2015- … : DexGrip
UB Hands: a short history
• 1986-1990: UBH 1 • 1992-1995: UBH 2 • 1998-2000: ASI Gripper • 2002-2005: UBH 3 • 2008-2012: UBH 4 • 2010-2012: TRIDENT • 2013-2014: MARIS 1 • 2014-2015: MARIS 2 • 2015- … : DexGrip
UB Hands: a short history
Control aspects
(Low-level) control challenges are generated by the following aspects:
• Structural compliance • Soft pads • Compliant joints • Tendons • Actuation systems
• Friction • Joints • Tendon path
• Actuation/Transmission system • Nonlinear motion/force transmission system • Tendon net (N+1) • Actuation/Joint/Workspace mapping
Other control aspects
Control challenges: • Contact point modelling (friction, …)
• Grasp configuration (e,g. optimization of contact positions)
• Manipulation
• Hand/Arm coordination
• Interaction with human beings
• …
Other control aspects
In cooperation with UNINA – F. Ficuciello, B. Siciliano
Hand/Arm coordination
www.sherpa-project.eu
Sherpa - Logo A01sHere is a c i rcular logo elaborated from the Kant ipur (Sherpa language) t ransl i terat ion of the let ter “s” :
By rotat ing i t , you can see the si louhette of a mountain emerging under blue skyes.
Search and rescue in unfriendly and possibly hostile
environments, like the ones in which civil protection, alpine rescuers and forest guards
usually operate
Features: • Unstructured environments
• Severe operative conditions (weather, terrain,..) • Presence of human (rescuer) often “focused” on demanding tasks
• Team (Human & Machine) capabilities • Emotional aspects
SHERPA in Short SHERPA
The SHERPA animals
Patrolling hawks
Busy Genius
Intelligent donkey
Trained wasps
The SHERPA wasp
Ulisse (Rai 3)
Other Aerial ConfiguraAons
Dimensions 900 x 900 mm MTOW 6 kg Installed Power 2100 W Motors BCM450 Propellers 15 x 4 Climb rate 6 m/s Lateral speed 15 m/s Rate of turn 60 deg/s Max altitude 13000 ft Operating range 1000 m Temperature range -10 ÷ 35 °C Payload: up to 2 Kg Max wind speed 30 kts
Esacopter
ApplicaAon: 3D reconstrucAon