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Tool for Analysing the Sensitivity and Tolerance of Mechatronic Systems in Matlab GUI

Authors: Bohuslava Juhasova, Martin Juhas, Renata Masarova, Zuzana Sutova


The article deals with the tool in Matlab GUI form that is designed to analyse a mechatronic system sensitivity and tolerance. In the analysed mechatronic system, a torque is transferred from the drive to the load through a coupling containing flexible elements. Different methods of control system design are used. The classic form of the feedback control is proposed using Naslin method, modulus optimum criterion and inverse dynamics method. The cascade form of the control is proposed based on combination of modulus optimum criterion and symmetric optimum criterion. The sensitivity is analysed on the basis of absolute and relative sensitivity of system function to the change of chosen parameter value of the mechatronic system, as well as the control subsystem. The tolerance is analysed in the form of determining the range of allowed relative changes of selected system parameters in the field of system stability. The tool allows to analyse an influence of torsion stiffness, torsion damping, inertia moments of the motor and the load and controller(s) parameters. The sensitivity and tolerance are monitored in terms of the impact of parameter change on the response in the form of system step response and system frequency-response logarithmic characteristics. The Symbolic Math Toolbox for expression of the final shape of analysed system functions was used. The sensitivity and tolerance are graphically represented as 2D graph of sensitivity or tolerance of the system function and 3D/2D static/interactive graph of step/frequency response.

Keywords: Mechatronic systems, Matlab GUI, sensitivity, tolerance.

Digital Object Identifier (DOI):

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[1] G. Ellis, “Control system design guide,” San Diego: Elsevier Academic Press, 2004. 464 pp.
[2] M. Vítečková, A. Víteček, “Modulus optimum for digital controllers,” Acta Montanistica Slovaca, 2003, vol. 8, no. 4, pp. 214 – 216.
[3] O. Moravčík, A. Vrban, “Analysis of Dynamic System Properties,” Technische Universität Ilmenau, Ilmenau, 2012
[4] J. Balátě, “Automatické řízení,” BEN – technická literatura, Praha, 2003
[5] J. Jovankovič, M. Žalman, “Mechatronické pohybové systémy (2),” AT&P journal, 2006, vol. XIII, no. 3, pp. 73 – 74.
[6] M. Juhás, B. Juhásová and P. Mydlo, “The Mechatronics System Control Quality Analysis Using Simulink and GUI in Matlab,” in Lecture Notes in Engineering and Computer Science. WCECS 2012. Vol. II. : World Congress on Engineering and Computer Science 2012. Proceedings IAENG & IET. San Francisco, USA, 24-26 October, 2012. Hong Kong : International Association of Engineers, 2012, pp. 1228- 1232
[7] I. Švarc, R. Matoušek, M. Šeda and M. Vítečková, “Automatické řízení,“ Akademické nakladatelství CERM, s.r.o. Brno, 2011
[8] A. Vrban, “Vybrané kapitoly z technických systémov,” Vydavateľstvo STU, Bratislava, 2004
[9] M. Juhás, O. Moravčík, B. Juhásová and Z. Šutová, “Sensitivity analysis of mechatronic system with flexibility control,” in Proceedings of the 16th International Conference on Mechatronics – Mechatronika 2014, Brno University of technology, Brno, 2014, pp. 209 – 2015
[10] MathWorks. (2014, December 10). Matlab GUI (Online). Available:
[11] MathWorks. (2014, December 10). Symbolic Math Toolbox (Online). Available: