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The University of Southampton
University of Southampton Malaysia

Active control Seminar

Time:
17:00 - 18:00
Date:
29 October 2014
Venue:
Lecture Theatre Room 1019

For more information regarding this seminar, please email Dr Maryam Ghandchi Tehrani at M.Ghandchi-Tehrani@soton.ac.uk .

Event details

In this presentation, an overview of active control for engineering applications will be presented. Both feedback and feedforward strategies will be introduced.

In feedback control, velocity and displacement feedback are implemented to assign the eigenvalues of the system. Experimental results will be shown on several laboratory structures. Examples are a T-plate, where the natural frequencies and damping ratios of the plate are modified as a result of feedback gains. Experimental results on an H-rig structure show how feedback control works. An application of active control will also be demonstrated on an Agusta-Westland W30 helicopter. Vibration suppression is achieved using both velocity and displacement feedback by assigning the poles of the helicopter to avoid blade passing frequency. In feedforward control, Least Mean Square (LMS) algorithm will be considered. A secondary signal will be generated to cancel the vibrations from primary (disturbance) source. Examples such as active noise control of a duct and active vibration control of an aircraft wing will be provided.

 

Speaker information

Dr Maryam Ghandchi Tehrani ,has a BSc in Mechanical Engineering from the Iran University of Technology (2002), an MSc (Eng) from the University of Liverpool (2004) and a PhD also from Liverpool (2007). She did two year postdoctoral research and one year temporary lectureship also at the University of Liverpool. She has been appointed as a new lecturer in the Institute of Sound and Vibration Research (ISVR) at the University of Southampton from October 2010. Her research areas are mainly vibration and control.

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