Abstract
This paper concerns the chattering elimination from discrete sliding mode observers. The dilemma chattering-precision, that characterizes the first order sliding mode observer in case of relatively large parameter variations and/or external disturbances, is discussed and the influence of the discontinuous term amplitude on the estimation performance is shown by a simulation example. The proposed second order discrete sliding mode observer is, then, introduced. The stability of a closed loop control system based on the proposed observer is analyzed. A real time application of the proposed observer incorporated into a 2-DSMC control loop of a chemical reactor is presented.
Published Version
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