Results 251 to 260 of about 33,998,602 (296)
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Variable structure model reference adaptive control systems
International Journal of Control, 1984Model reference adaptive controllers, when only input and output measurements are available, are designed using the theory of variable structure systems. State variable filters are used in order to obtain differentiator-free controllers. The proposed design allows the error transient to be prescribed in advance.
AMBROSINO, GIUSEPPE +2 more
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Model Reference Adaptive Control of a Class of Nonlinear Systems
IFAC Proceedings Volumes, 1991Abstract A variety of adaptive control methods have been proposed to deal with uncertainties in the control object. Model reference adaptive control (MRAC) is one of the most popular adaptive control methods. While many physical systems exhibit nonlinear characteristics, most of existing MRAC design methods assume that the control object is linear ...
F. Ohkawa, M. Tomizuka
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On the equivalence of parameter adaptive and model reference systems
International Journal of Control, 1979The paper deals with optimal adaptive systems using quadratic criterion functions. The synthesis of the optimal control vector of parameter adaptive systems is based on the substitution of process matrices in the linear regulator with their estimates, obtained from an identification procedure.
D. MATKO, F. BREMŠAK1
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Bifurcation in model reference adaptive control systems
Systems & Control Letters, 1988zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Golden, Melinda P., Ydstie, B. Erik
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On a Problem of Optimal Model Reference Adaptive Systems
IFAC Proceedings Volumes, 1981Abstract In the present paper an optimal Model Reference Adaptive System is proposed. A procedure is given to compute the optimal adaptive gains in Model Reference Adaptive Systems using the simple square criterion. Two numerical examples are included to demonstrate the theoretical results.
Pham Thuong Cat, I. Bán
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MODEL REFERENCE ADAPTIVE SYSTEM ESTIMATES FOR COUNTING PROCESSES
Statistica Neerlandica, 1986AbstractThe adaptive estimation procedure of the model reference adaptive system is modified and applied to counting process models. Maximum likelihood estimates constitute a subclass of the adaptive estimators considered. The adaptive estimator is shown to be strongly consistent and to converge in law to a normal variate.
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Identification by Model Reference Adaptive Systems
1992In this note, we present an introduction to the so-called model reference adaptive system method which can be used to identify a spatially varying parameter in an evolution equation. The inherent mathematical difficulties are briefly discussed and relevant results are given.
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Model reference fuzzy adaptive learning system
IFAC Proceedings Volumes, 2004Abstract Fuzzy control has revealed as a practical alternative to several conventional control schemes since it has shown good results in some application areas. However, there are several drawbacks of this approach: (i) the design of fuzzy controllers is usually performed in an ad hoc manner where it is often difficult to choose some of the ...
Martin Kratmüller +3 more
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Adaptive Control for Systems with Slow Reference Models
AIAA Infotech@Aerospace 2010, 2010It is difficult to achieve good tracking performance in the presence of modeling error with the use of high adaptation gain. This leads to unnecessary high frequency control effort that can excite unmodeled dynamics. This paper introduces an adaptive control architecture that allows fast adaptation for systems with slow reference models.
Jonathan Muse, Anthony Calise
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Hierarchical model reference adaptive control systems
Proceedings of 1995 34th IEEE Conference on Decision and Control, 2002This paper presents a hierarchical model reference adaptive control algorithm for a class of complex nonlinear systems. The complex system concerned is represented by a family of local transfer function models, which are smoothly combined together by characteristic basis functions.
G. Feng, S.G. Cao, N.W. Rees
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