Controller design using second order sliding mode algorithm with an application to a coupled-tank liquid-level system

A method for the design of second-order sliding mode controllers is developed for a coupled two tank system. The standard sliding mode (SSM) controller produces oscillations in the closed-loop system. The newly invented second order sliding mode controller (SOSMC) not only retains the robustness pro...

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Bibliographic Details
Published in2009 IEEE International Conference on Control and Automation pp. 558 - 563
Main Authors Benayache, R., Mahmoud, S.M., Chrifi-Alaoui, L., Bussy, P., Castelain, J.-M.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.12.2009
Subjects
Algorithm design and analysis
Automatic control
Control systems
Design automation
Design methodology
Frequency
Robust control
Robustness
Sliding mode control
Uncertainty
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Summary:A method for the design of second-order sliding mode controllers is developed for a coupled two tank system. The standard sliding mode (SSM) controller produces oscillations in the closed-loop system. The newly invented second order sliding mode controller (SOSMC) not only retains the robustness properties of the classical sliding mode controller (SMC) but also eliminates the drawback of the SMC that is high frequency chattering due to high frequency switching. The high frequency switching can excite the unmodelled dynamics and makes the system unstable. The work presented in this paper is the super twisting controller design for a coupled two tank system. Robustness of the controllers is analyzed and dynamic bounds for the uncertainty are found for a class of this system. The application of this technique to the two-tank system to solve a robust tracking problem is presented.
ISBN:1424447062
9781424447060
ISSN:1948-3449
1948-3457
DOI:10.1109/ICCA.2009.5410368