Automatyka
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ISSN 1429-3447
e-ISSN: 2353-0952
Issue Date
2008
Volume
T. 12
Number
Nr 2
Description
Journal Volume
Automatyka
T. 12 (2008)
Projects
Pages
Articles
Dynamical model of propagation of pollutants in a river
(Wydawnictwa AGH, 2008) Żołopa, Elżbieta; Grabowski, Piotr
In this paper a dynamical model of propagation of pollutants in a river with $M$ point controls in the form of aerators and $K$ point measurements is being transformed to an abstract model on a suitably chosen Hilbert space. Our model belongs to the class of abstract models of the factor-type. It is shown that the semigroup generated by the state operator $A$ has a property of decaying in a finite-time, the observation operator is admissible, and the system transfer function is in the space $H^{\infty}$ ($\mathbb{C}^{+}$, $L(\mathbb{C}^{M}, \mathbb{C}^{K})$). In the final part we also formulate the LQ problem with infinite-time horizon.
Output collocation method for continuous state estimation from discrete output measurements in linear dynamical systems
(Wydawnictwa AGH, 2008) Baranowski, Jerzy
The goal of this paper is to introduce a new method for dynamical system output approximation - output collocations. The need for such approximation arises when the measurements are discrete in time and we want to estimate the continuous state of the system. Such approximation can be used along with a continuous asymptotic observer as part of a solution for continuous state estimation from discrete output measurements (CSEDOM) problem. The presented method is designed specially for this task and, besides output measurements, it uses the CSEDOM information from earlier iterations. This method is also presented along with classical interpolation approach which was considered in the author's previous works.
Przegląd możliwości sterowania systemem o zmiennym momencie bezwładności typu ball on beam
(Wydawnictwa AGH, 2008) Ganobis, Michał
The purpose of this paper is to present a ball on beam system and a short overview of possibilities of its control. It contains control design methods using mathematical model (LQR), and without it (fuzzy logic controller).
Adaptacyjny układ regulacji z predyktorem Smitha z możliwością zastosowania w systemach rozproszonych
(Wydawnictwa AGH, 2008) Tutaj, Andrzej
The paper describes an adaptive control system for a linear finite-dimensional and asymptotically stable SISO plant with a slowly changing delay time at the input or output. The estimate of a dead time obtained by a continuous identification is used in a delay line, which is a part of a Smith predictor. Use of the adaptation enlarges the stability region and increases the performance of a system. The described setup can be used for distributed control systems where delays are introduced by the communication network. This approach succeeds if delays in the network vary slowly with time.
Wykorzystanie technologii FPGA w Katedrze Automatyki AGH do badań nad sterowaniem układami MagLev
(Wydawnictwa AGH, 2008) Piłat, Adam Krzysztof; Piątek, Paweł
The Active Magnetic Levitation systems (MagLev) represents the programmable dynamics devices. The application of FPGA technology to measurement and control tasks allowed to develop individual hardware-software solutions that increases quality and performance of the control system. Nowadays these tools also used for control purposes. The increasing FPGA capacity, shows that it will be possible to realize dedicated and programmable hardware controllers. Current research is oriented to methods and tools that will allow too implement in FPGA complex control algorithms.