Dual adaptive extremum control of Hammerstein systems
| Autor: | Björn Wittenmark, Simon G. Fabri, Marvin K. Bugeja |
|---|---|
| Rok vydání: | 2015 |
| Předmět: | |
| Zdroj: | International Journal of Control. 88:1271-1286 |
| ISSN: | 1366-5820 0020-7179 |
| DOI: | 10.1080/00207179.2015.1006452 |
| Popis: | A novel dual adaptive controller for extremum control of stochastic and uncertain nonlinear Hammerstein systems is proposed. The design is based on the innovations dual control cost function originally developed for conventional adaptive control of linear systems. However, the design process is extensively modified and developed so as to cater for the extremum control scenario. This is a more challenging problem because the reference input is itself a nonlinear function of the unknown system parameters, rather than an independent and predefined external reference signal. As in all dual adaptive schemes, it leads to a control law that balances out the need for caution, due to parameter uncertainty, with the conflicting requirement of probing that acts to quickly reduce parameter uncertainty. The proposed controller's performance is analysed through extensive Monte Carlo simulation trials and compared with several other non-dual adaptive extremum controllers. It is shown that the novel extremum innovations ... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|