Geotechnical Engineering Group

Department of Civil & Structural Engineering

Dr Irfan Ullah Khan

Research Associate

Contact

Irfan.khan@sheffield.ac.uk
+44 (0) 114 222 5056

Department of Civil and Structural Engineering
Sir Frederick Mappin Building
Mappin Street,
Sheffield,
S1 3JD

Profile

Irfan Khan received his BE degree in Mechatronics Engineering from NUST in May 2009. He got his Master Degree in Mechatronics Engineering from AUS in October 2013. During his master thesis, he worked on nonlinear robust control and torsional vibration suppression in elastic drive systems. He started PhD in November 2013. During his PhD, he worked on structural vibration suppression using hybrid active and semi-active control.

For the last three years, he has been part of two very well-known research groups i.e. Dynamics Research Group (DRG), Engineering Nonlinearity (ENL). In recent years, he has been working on a project to design a nonlinear hybrid controller using active actuator and a semi-active device for vibration suppression in flexible structures. The key novelty is to use the hybrid controller to enable the semi-active device to achieve a performance as close to a fully active device as possible. This is accomplished by ensuring that the active actuator can assist the semi-active in the regions where energy is required. Also, the hybrid active & semi-active controller is designed to minimise the switching of the semi-active controller. The control framework used is the immersion and invariance control technique in combination with a sliding mode control.

Irfan khan joined the Geotechnical research group in civil and structural engineering department at the University of Sheffield as a research associate in April 2017. He is currently working on a climate control chamber for the centrifuge environment. The aim of this project is to control different climatic parameter that includes rainfall, relative humidity and temperature within the centrifuge chamber and study the soil/clay interaction with the atmosphere.

Recent activities and achievements

  • Best Vibrations Paper Award at ASME Dynamic Systems and Control Conference, (DSCC) 2016, Minneapolis, MN, USA.
  • Awarded PhD scholarship at the University of Sheffield
  • Awarded Graduate Teaching Assistantship (GTA), from 2011 to 2013 at the American University of Sharjah
  • Performance based NUST semester scholarship for 5 consecutive semesters
  • Best engineering design award in National Engineering and Robotics Contest (NERC) 2008
  • Winner of Autonomous Line Following Robot Competition, 2008 at NU-FAST

Qualifications

PhD-Mechanical (Nov 2013 – June 2017), The University of Sheffield, UK
MS-Mechatronics (2011 – 2013), American University of Sharjah, UAE
BE Mechatronics (2005 -2009), National University of Sciences and Technology, Pakistan