About the Project
Once the possible system responses are known, it is often desirable to maintain a specific behaviour avoiding the unwanted ones by apply adequate control methods through actuators. Actuators, such as electrical motors, hydraulic or pneumatic valves, do not typically have instantaneous responses and their dynamics usually involve one or two limitations: (i) delay, and (ii) maximum/minimum value (constrained control effort) [2-3]. It was shown in  that the effect of simultaneous existence of both limitations cannot be ignored as they would make the control systems unsuccessful, inefficient and occasionally unstable.
Candidates should have (or expect to achieve) the UK honours degree at 2.1 or above (or equivalent) in Mechanical/Electrical/Applied Mathematics/Physics or closely related discipline. It is essential that the applicant has a Good understanding of “linear system dynamics and control” and basic knowledge of “nonlinear systems” along with proficiency in simulating system dynamics using MATLAB or Python and the Ability to design and simulate some of well-known Nonlinear and Chaos Control methods such as sliding mode, Time-delayed Feedback etc.
Engineering Mathematics especially ODEs.
Dynamics (Lumped mass modelling and analysis)
Programming in MATLAB or Python to solve ODEs and piece-wise linear systems.
• Apply for Degree of Doctor of Philosophy in Engineering
• State name of the lead supervisor as the Name of Proposed Supervisor
• State ‘Self-funded’ as Intended Source of Funding
• State the exact project title on the application form
When applying please ensure all required documents are attached:
• All degree certificates and transcripts (Undergraduate AND Postgraduate MSc-officially translated into English where necessary)
• Detailed CV
Informal inquiries can be made to Dr V Vaziri ([email protected]), with a copy of your curriculum vitae and cover letter. All general enquiries should be directed to the Postgraduate Research School ([email protected])
It is possible to undertake this project by distance learning. Interested parties should contact Dr Vaziri to discuss this.
 Liu, Y., Wiercigroch, M., Ing, J. and Pavlovskaia, E., 2013. Intermittent control of coexisting attractors. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 371(1993), p.20120428.
 Vaziri, V., Kapitaniak, M. and Wiercigroch, M., 2018. Suppression of drill-string stick–slip vibration by sliding mode control: Numerical and experimental studies. European Journal of Applied Mathematics, 29(5), pp.805-825.
 Vaziri, V., Oladunjoye, I., Kapitaniak, M., Aphale, S.S. & Wiercigroch, M., A Parametric Analysis of a Sliding-Mode Controller Designed to Alleviate Drill-String Stick-Slip Vibrations, Meccanica, Accepted, March 2019.
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