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Vol: 52(66) No: 3 / September 2007 Experiments in Linear and Sliding Mode Control of First- and Second-order Lag Plus Dead Time Processes Radu-Emil Precup Department of Automation and Applied Informatics, “Politehnica” University of Timisoara, Faculty of Automation and Computers, Bd. V. Parvan 2, RO-300223 Timisoara, Romania, phone: +40-256-4023-29, e-mail: radu.precup@aut.upt.ro, web: http://www.aut.utp.ro/~rprecup Stefan Preitl Department of Automation and Applied Informatics, “Politehnica” University of Timisoara, Faculty of Automation and Computers, Bd. V. Parvan 2, RO-300223 Timisoara, Romania, phone: +40-256-4023-30, e-mail: stefan.preitl@aut.upt.ro, web: http://www.aut.upt.ro/~spreitl Ion-Bogdan Ursache Department of Automation and Applied Informatics, “Politehnica” University of Timisoara, Faculty of Automation and Computers, Bd. V. Parvan 2, RO-300223 Timisoara, Romania, phone: +40-256-4023-24, e-mail: bogdan.ursache@aut.upt.ro Petru Alexandru Clep Department of Automation and Applied Informatics, “Politehnica” University of Timisoara, Faculty of Automation and Computers, Bd. V. Parvan 2, RO-300223 Timisoara, Romania, phone: +40-256-4023-26, e-mail: alexandru.clep@aut.upt.ro Florin Spanu Department of Automation and Applied Informatics, “Politehnica” University of Timisoara, Faculty of Automation and Computers, Bd. V. Parvan 2, RO-300223 Timisoara, Romania, e-mail: spanuflorin@yahoo.com Keywords: benchmark, 1-DOF controllers, internal model control, sliding mode control, laboratory equipment Abstract The paper presents aspects concerning the development and experimentation of control systems for plants with slow responses with focus on teaching. The categories of plants considered are first-and second-order plus dead time processes. The experiments can be done using laboratory equipment dedicated to the study of control systems with 1-DOF controllers. Linear and sliding mode control algorithms are analyzed. References [1]K. J. Aström and T. Hägglund, PID Controllers Theory: Design and Tuning, Instrument Society of America, Research Triangle Park, NC, 1995. [2]***, SRAIT meeting of professors in the field of Automatic Control in Romania, Bucharest, Romania, 26 Oct. 2007 (in Romanian). [3]S. Preitl and R. -E. Precup, Introduction to Control Engineering, Editura Politehnica, Timisoara, 2001 (in Romanian). [4]***, Controlled air stream and temperature control plant LTR 701, Operating manual, Amira GmbH, Duisburg, Germany, 2002. [5]A. O’Dwyer, “A summary of PI and PID controller tuning rules for processes with time delay, part I and part II”, Preprints of IFAC Workshop on Digital Control: Past, Present and Future of PID control PID’00, Terrassa, Spain, pp. 175 – 180, 242 – 247, 2000. [6]O. Föllinger, Regelungstechnik, Elitera Verlag, 1999. [7]V. Strejc, “Approximation aperiodischer Übertragungscharakte-ristiken”, Regelungstechnik, vol. 7, pp. 124 – 128, 1959. [8]***, Preprints of IFAC Workshop on Digital Control: Past, Present and Future of PID control PID’00, Terrassa, Spain, 5-7 April 2000. [9]S. Preitl and R. -E. Precup, “An extension of tuning relations after Symmetrical Optimum method for PI and PID controllers”, Automatica, vol. 35, no. 10, pp. 1731 – 1736, 1999. [10]Z. Preitl., “PI and PID controller tuning method for a class of systems”, Proceedings of SACCS 2001 Symposium, Iasi, Romania, Oct. 26-27, 4 pp., 2001. [11]B. -I. Ursache, “Solutions for temperature control of a plant”, Diploma thesis, Faculty of Automation and Computers, “Politehnica” University of Timisoara, 2003 (in Romanian). [12]***, LTR 701 Controlled air stream and temperature control plant, MCON – software-documentation, Amira GmbH, Duisburg, Germany, 2000. [13]N. O. Lai, C. Ewards, and S. 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Transactions on Automatic Control and Computer Science, vol. 49 (63), no. 1, pp. 127 – 132, Nov. 2004. [18]F. Spânu, “Sliding-mode solutions for the temperature control of a plant”, Diploma thesis, Faculty of Automation and Computers, “Politehnica” University of Timisoara, 2004 (in Romanian). [19]P. Baranyi, “TP model transformation as a way to LMI-based controller design”, IEEE Transactions on Industrial Electronics, vol. 51, no. 2, pp. 387 – 400, April 2004. [20]T. M. Guerra and L. Vermeiren, “LMI-based relaxed nonquadratic stabilization conditions for nonlinear systems in the Takagi-Sugeno form”, Automatica, vol. 40, no. 5, pp. 823 – 829, May 2004. [21]C. Arino and A. Sala, “Relaxed LMI conditions for closed-loop fuzzy systems with tensor-product structure”, Engineering Applications of Artificial Intelligence, vol. 20, no. 8, pp. 1036 – 1046, Dec. 2007. [22]Z. C. Johanyák, R. Parthiban, and G. Sekaran, “Fuzzy modeling for an anaerobic tapered fluidized bed reactor”, Buletinul Stiintific al Universitatii “Politehnica” din Timisoara. Transactions on Automatic Control and Computer Science, vol. 52 (66), no. 2, pp. 67 – 72, June 2007. [23]L. Horváth and I. J. Rudas, “Possibilities for application of associative objects with built-in intelligence in engineering modeling”, Journal of Advanced Computational Intelligence and Intelligent Informatics, vol. 8, pp. 544 – 552, Sept. 2004. [24]A. Gaudia, P. Korondi, R. -E. Precup, and S. Preitl, “Recognizing unusual behaviour in distributed environment”, Proceedings of 7th International Conference on Technical Informatics CONTI 2006, Timisoara, Romania, vol. 1, pp. 55 – 60, 2006. |