Abstract
This paper focuses on robust adaptive sliding mode control for discrete-time state-delay systems with mismatched uncertainties and external disturbances. The uncertainties and disturbances are assumed to be norm-bounded but the bound is not necessarily known. Sufficient conditions for the existence of linear sliding surfaces are derived within the linear matrix inequalities (LMIs) framework by employing the free weighting matrices proposed in He et al. (2008) [3], by which the corresponding adaptive controller is also designed to guarantee the state variables to converge into a residual set of the origin by estimating the unknown upper bound of the uncertainties and disturbances. Also, simulation results are presented to illustrate the effectiveness of the control strategy.
| Original language | English |
|---|---|
| Pages (from-to) | 339-357 |
| Number of pages | 19 |
| Journal | Journal of the Franklin Institute |
| Volume | 347 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Feb 2010 |
Keywords
- Adaptive control
- Discrete-time systems
- Linear matrix inequality
- Sliding mode control
- Time delay