Dal 26 al 28 aprile 2010, il Prof. Steven Dubowsky del MIT di Boston, è stato ospite del Centro Gustavo Stefanini per un ciclo di seminari dal titolo “Distinguished Lectures in Field Robotics”.
Gli incontri si sono tenuti alla Spezia e a Pisa con il seguente calendario:
26 Aprile 2010, Sala Conferenze Centro Gustavo Stefanini, La Spezia
Ore 15:00 – 18:00
“The challenges of The Control of High Speed Rough Terrain Unmanned Robotic Vehicles”
In recent years, substantial progress has been made in the research of unmanned robotic vehicles in rough terrains. For the past 15 years, the students and staff of the FSRL have been studying the planning and control of high-speed autonomous unmanned vehicles with support of NASA and the US Department of Defense. Initially, this work focused on autonomous vehicles moving slowly through highly unstructured environments, such as Mars Exploration Rovers. Algorithms were developed in which rovers would use understanding of its mechanics to proprioceptively estimate the shape and properties of the terrain. This type of sensing permits the vehicles to optimize their mobility and prevent entrapment. These results are then combined with long-distance vision to “project” the terrain knowledge into the far field. This work will be reviewed in this presentation.
More recent our research has focused on developing planning and control algorithms for high-speed rovers in rough terrain. The objective of this work is to avoid problems such as rollovers and sideslipping at high speeds due to unexpected obstacles and events. These problems are addressed in our work both analytically and experimentally. It is shown that high-speed conditions have inherent problems that make a complete solution very difficult, if not infeasible.
28 Aprile 2010, Aula Magna Scuola Superiore Sant’Anna, Pisa
Ore 10.00 – 13:00
“Digital Mechatronics: A New Robotics Design Paradigm with Example Applications: Mars Walking Explorers to Surgical Robots”
Digital mechatronic devices approximate the motion of continuous mechanisms by using larger numbers of binary degrees-of-freedom. Digital mechatronic devices have excellent repeatability, are reliable, robust and simple to control. Muscle actuators made of elastomers, have limitations, however they are well suited for digital mechatronic devices. These actuators have unique properties such as they can produce large displacements with substantial forces. Furthermore, they are light and inexpensive.
In the work presented here, digital mechatronic systems were first considered for planetary exploration walking robots. This study has led to the development of surgical robots that can function effectively inside of MRI systems with important medical benefits.
Bio Prof. Steven Dubowsky
Dr. Dubowsky is a Professor in the Department of Mechanical Engineering and the Department of Aeronautics and Astronautics at the Massachusetts Institute of Technology, Cambridge, Massachusetts. He is the director of MIT Field and Space Robotics Laboratory (http://robots.mit.edu/).. He is the Principal Investigator of a number of research programs sponsored by organizations that include DARPA, NASA, The US Navy, The Center For the Integration of Medicine and Innovative Technology, industry, the Japanese Space Agency and the British government. The research of these programs focus on the design and control of robotic systems. Dr. Dubowsky has published over 300 technical papers and he is a Fellow of the ASME and of the IEEE.
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