| タイトル | Adaptive control in the presence of unmodeled dynamics |
| 本文（外部サイト） | http://hdl.handle.net/2060/19830005594 |
| 著者（英） | Rohrs, C. E. |
| 著者所属（英） | Massachusetts Inst. of Tech. |
| 発行日 | 1982-11-01 |
| 言語 | eng |
| 内容記述 | Stability and robustness properties of a wide class of adaptive control algorithms in the presence of unmodeled dynamics and output disturbances were investigated. The class of adaptive algorithms considered are those commonly referred to as model reference adaptive control algorithms, self-tuning controllers, and dead beat adaptive controllers, developed for both continuous-time systems and discrete-time systems. A unified analytical approach was developed to examine the class of existing adaptive algorithms. It was discovered that all existing algorithms contain an infinite gain operator in the dynamic system that defines command reference errors and parameter errors; it is argued that such an infinite gain operator appears to be generic to all adaptive algorithms, whether they exhibit explicit or implicit parameter identification. It is concluded that none of the adaptive algorithms considered can be used with confidence in a practical control system design, because instability will set in with a high probability. |
| NASA分類 | CYBERNETICS |
| レポートNO | 83N13865
LIDS-TH-1254
NAS 1.26:169525
NASA-CR-169525 |
| 権利 | Copyright, Distribution under U.S. Government purpose rights |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/164130 |
