Legged Robotics and Vascular Acoustics from a Mechanical Engineering Perspective
Prof. Yiğit Yazıcıoğlu, METU
Date: Wednesday, March 19, 2014
Place: EA 409
In this seminar, I will mainly talk about two relatively unrelated subjects, namely, legged robotics and vascular acoustics.
Legged robotics in particular and legged locomotion in general offers a rich research environment for mechanical engineers. There are challenging problems in this field about planar and spatial multi-body dynamics, hybrid dynamic systems, active and passive dynamic stability, application of numerous control strategies, and relation to biological systems. As it is observed in natural environments, instead of using high bandwidth control strategies, legged creatures attain dynamic stability through the use of series elastic actuation and periodic inputs generated by means of central pattern generators.
Based on the studies during my Ph.D, we have continuing work in the field of vascular acoustics, with a focus on the possibility of diagnosing vascular pathologies by means of noninvasive passive listening techniques from the skin surface. Vascular anomalies such as the constriction of an artery results in a distinct noise field downstream of the constriction and this acoustic energy travels to skin surface. Such sounds can even be heard by a stethoscope if the artery is close to skin surface. We believe it will be possible to detect these signals from deeper vessels using current sensor technology in order to locate and diagnose vascular diseases.
Finally, if time permits, I will mention our research and collaboration with the defense industry in Turkey which has a heavy presence around Ankara. The national defense industry is involved in the development of a wide variety of original technologies. Many research problems arise during these processes and the universities here are at a strategic location to exploit this type of opportunity.
Yiğit Yazıcıoğlu was born in 1975 in Adana, Turkey. He graduated from Middle East Technical University in 1997 with a B.S degree in Mechanical Engineering. He earned his M.S. degree in 1999 also in the same department studying in the area of vehicle dynamics and control. He received his Ph.D. in Mechanical Engineering from University of Illinois at Chicago in 2005 based on his work on solid acoustics in biological tissue induced by vascular flow. He became a faculty member at METU Department of Mechanical Engineering at 2005 and since then he has been teaching undergraduate and graduate level courses in the fields of mechanics, dynamics, control, vibration, mathematics and numerical Methods. His research interests are in the fields of solid acoustics with applications in structural vibrations and bioacoustics, dynamics of engineering systems and control theory, robotics and legged locomotion, vehicle dynamics & automotive engineering.