Stability analysis of discrete input output second order sliding mode control Online publication date: Sat, 27-Sep-2014
by Houda Romdhane; Khadija Dehri; Ahmed Said Nouri
International Journal of Modelling, Identification and Control (IJMIC), Vol. 22, No. 2, 2014
Abstract: The success of the sliding mode control (SMC) is due to the simplicity of its implementation and its robustness against external disturbances via state space and input output model. In spite of this characteristic, the sliding mode control (SMC) suffers from a main drawback known as the 'chattering phenomenon'. In order to overcome this problem, a new discrete second order sliding mode control via input output model is proposed in this paper. A stability analysis of the proposed control was then studied. To illustrate the effectiveness of the proposed discrete second order sliding mode control law, a classical discrete sliding mode control and discrete second order sliding mode control were applied to a real discrete second order system via input output model. The experimental results of the proposed discrete sliding mode control law show good performances in terms of the rejection of the external disturbances and the reduction of the chattering phenomenon.
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