Provide students with knowledge of design of automatic control systems. The student should be able to use a set of tools to design controllers for SISO systems with linear dynamics, both in continuous and discrete time domains, in any engineering field of application.
Open-loop control, closed-loop control, cascade control, internal model control, control with Smith predictor (for plants with delay). Closed-loop stability analysis: root locus method and Nyquist criterion. Performance criteria in time (steady-state response, transient response) and in frequency (bandwidth, stability margins). PID control, and empirical design methods (Ziegler-Nichols). PID controller and lead-lag compensator design in continuous time and in frequency.
Practical issues of PID control implementation. Digital, sampled and quantised signals. Sampling time selection.
Discretisation methods. Time and frequency responses of discrete systems. Design of digital controllers by emulation.
Direct design of digital controllers. Performance criteria in the Z plane. Root locus method in the Z plane. Frequency domain stability of discrete systems (Nyquist criterion in the Z plane) and the bilinear transform.
Written evaluation with 2 mini-tests (70%) and 2 laboratory works (30%). Minimum grade of 9,5 in the average classification of the mini-tests and the laboratory works.
"Controlo de Sistemas", Ayala Botto, Miguel, 2017, AEIST Press; “Control Systems Engineering”, Norman Nise, 2017, 7th Edition, 2017, Wiley. ; “Automatic Control Systems”, B. Kuo, F. Golnaraghi, 2010, 9th Edition, 2010, Wiley.; “Discrete time control systems”, Katsuhiko Ogata, 1995, 2nd Edition, Prentice-Hall, 1995. ; "Feedback Control of Dynamic Systems", Gene F. Franklin, J. David Powell, Abbas Emami-Naeini, 2019, 8th Edition, 2019, Pearson Education Limited.
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