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Active Control of the Wind-Induced Vibration of a Suspension Bridge Tower

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Abstract:
We were involved in the design and implementation of an active vibration control system for the towers supporting one of the longest suspension bridge in the world which is in Hokkaido island in Japan. Active vibration control via an active mass damper (AMD) was employed for the suspension bridgetower under construction. The AMD system was implemented to prevent motion-sickness of the construction-workers, to improve the efficiency of the workers and to shorten the construction period. As a control algorithm, direct velocity feedback (DVFB) was adopted and worked effectively for vortex-induced vibration. Furthermore, H-infinity control was applied to remove undesirable mass movements. Experimental results (video) demonstrating the effectiveness against vibration induced by turbulent flow will be shown.

Type of Seminar:
Public Seminar
Speaker:
Kazuro Tsuda
Automatic Control Lab
Dept. of Electrical Engineering
Physikstrasse 3
CH-8092 Zürich
Date/Time:
Jun 09, 1999   17:15
Location:

ETH-Zentrum, ETZ E6, Gloriastrasse 35, 8006 Zuerich
Contact Person:

Martine D'Emma
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Biographical Sketch:
Kazuro Tsuda graduated from Tokyo University, Department of Mathematical Engineering and Information Physics in 1988 and received a Master of Science Degree from the same department in 1990. His Master thesis, entitled "Vibration control of flexible structures", focussed on ways of designing the LQR and the observer in order to avoid control- and observation- spillover.
In 1990 he joined NKK company, one of the leading steel and heavy-industry companies in Japan. He has been engaged in research and development of control applications such as anti-swing control for a ceiling crane, anti-vibration control for the main tower of a large suspension bridge, thickness control for a cold reverse mill, and thickness and tension control for a hot strip mill.
He is a visiting researcher in the group of Prof. Morari for two years studying Model Predictive Control.