Name
Abstract | ||
|---|---|---|
The subject of this paper is the analysis and the design of a class of robust discrete-time variable-structure controllers of integral type. We refer to the discontinuous integral control (DIC) technique, already developed by the authors for the time-continuous case, where a nonlinear integral action is used for estimating the external disturbance and keeping small the discontinuous term in the control law and the subsequent chattering effect. A discretised version of the DIC algorithm, which is properly modified in order to take into account the time-derivative information on the controlled variable, is introduced and discussed. The so-obtained discrete-time controller shows to be very effective in reducing the chattering when the system parameters are known. Moreover, to cope with a specific case of unknown parameters, a new adaptive control structure is proposed and analysed. The local asymptotic stability of the resulting closed-loop system is proved in the case of constant external disturbances. Finally, simulation results on the velocity control of a DC motor end the paper. (C) 1998 Elsevier Science Ltd. All rights reserved. |
Year | DOI | Venue |
|---|---|---|
1998 | 10.1016/S0005-1098(97)00197-0 | Automatica |
Keywords | Field | DocType |
discrete variable-structure integral controller,robust control | Control theory,Nonlinear system,Control theory,Exponential stability,Control variable,Adaptive control,Robust control,Variable structure control,Discrete system,Mathematics | Journal |
Volume | Issue | ISSN |
34 | 3 | 0005-1098 |
Citations | PageRank | References |
5 | 0.96 | 1 |
Authors | ||
3 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| C. Bonivento | 1 | 218 | 27.54 |
| M. Sandri | 2 | 5 | 0.96 |
| R. Zanasi | 3 | 5 | 0.96 |