DiscreteTime Sliding Mode Controller Design Based on Output Feedback

doi:-

Abstract

Abstract: An improved output feedback variable structure controller was designed for a class of multiinput multioutput (MIMO) uncertain discretetime systems. The stable sliding surface was designed on the basis of the pole assignment method. Then， the advantages and disadvantages of the traditional discretetime exponential approximation law were analyzed. A modified discretetime exponential approximation law was presented on the basis of the sliding mode control condition. The designed control law could ensure quickly the state response of the system and chattering could be reduced at the same time. When the states were not fully measured， the proposed controller had a good performance. The simulation results verified that the proposed algorithm was feasible and effective.

Key words: discretetime system, output feedback, sliding mode control, pole assignment, exponential approximation law

CLC Number:

TP273

WANG Hongwei， YU Chi， WANG Suxin. DiscreteTime Sliding Mode Controller Design Based on Output Feedback[J]. Journal of Northeastern University, 2013, 34(4): 465-468.

References

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