ROBUSTNESS OF AN ADAPTIVE TOLE PLACEMENT CONTROL ALGORITHM IN THE] PRESENCE OF MODELING ERROR AND TIME VARIATION OF PARAMETERS | ||||
| International Conference on Aerospace Sciences and Aviation Technology | ||||
| Article 34, Volume 4, ASAT CONFLENCE 14-16 May 1991 , CAIRO, May 1991, Page 363-372 PDF (1.75 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/asat.2019.25818 | ||||
 View on SCiNiTO | ||||
| Author | ||||
| Gomaa Z. El-Far. | ||||
| Faculty of Electronic Eng., Menoufia Univ., Menouf, Egypt. | ||||
| Abstract | ||||
| paper presents an indirect adaptive robust control scheme for time varying plant in the presence of the modeling error. The robustness is achieved by using a normalizing identification error signal in combination with a dead zone and aprojection algorithm in the adaptive law. This modified algorithm is used to estimate the controller parameters so that the closed loop plant will track a certain desired performance closely in some sense and the plant input and output will remain bounded for all time. The proposed adaptive control algorithm is used to control the behavior of an aircraft system in which a good behavior is obtained. A comparison between the ordinary projection algorithm and the proposed adaptive algorithm in controlling the aircraft system is carried out. The simulation results indicate the effectiveness of the proposed adaptive control algorithm. | ||||
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