PL
 |
EN
Preferencje help
Polish version English version Język
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 9

Liczba wyników na stronie
first rewind previous Strona / 1 next fast forward last
Wyniki wyszukiwania
Wyszukiwano:
w słowach kluczowych:  output feedback
help Sortuj według:

help Ogranicz wyniki do:
first rewind previous Strona / 1 next fast forward last
1
Content available Dynamic sliding mode control based on a full-order observer: Underactuated electro-mechanical system regulation
Ordaz Patricio, Romero-Trejo Hugo, Cuvas Carlos, Sandre Omar
International Journal of Applied Mathematics and Computer Science
|
2024
|
Vol. 34, no. 1
29--43
EN
This paper concerns the synthesis of a nonlinear robust output controller based on a full-order observer for a class of uncertain disturbed systems. The proposed method guarantees that, in finite time, the system trajectories go inside a minimal neighborhood ultimately bounded. To this end, the attractive ellipsoid method is enhanced by applying the dynamic sliding mode control performance properties. Furthermore, in order to guarantee the stability of the trajectory around the trivial solution in the uniform-ultimately bounded sense, the feasibility of a specific matrix inequality problem is provided. With this feasible set of matrix inequalities, the separation principle of the controller/observer scheme considered also holds. To achieve a system performance improvement, a numerical algorithm based on the small size ultimate bound is presented. Finally, to illustrate the theoretical performance of the designed controller/observer, a numerical example dealing with the stabilization of a disturbed electromechanical system with uncertain and unmodeled dynamics is presented.
2
Content available Zeroing the transfer matrix of the Roesser model of 2-D linear systems
Kaczorek Tadeusz
International Journal of Applied Mathematics and Computer Science
|
2023
|
Vol. 33, no. 4
513--519
EN
Controllability, observability and the transfer matrix of the discrete 2-D Roesser model are analyzed. It is shown that the controllability of the Roesser model is invariant under state feedbacks and the observability under output feedbacks. Sufficient conditions are established for the zeroing of the transfer matrix of the Roesser model.
3
Content available Decentralized static output feedback controller design for linear interconnected systems
Fadhilah Helisyah Nur, Adzkiya Dieky, Arif Didik Khusnul, Zhai Guisheng, Mardlijah
International Journal of Applied Mathematics and Computer Science
|
2023
|
Vol. 33, no. 1
83--96
EN
Many interconnected systems in the real world, such as power systems and chemical processes, are often composed of subsystems. A decentralized controller is suitable for an interconnected system because of its more practical and accessible implementation. We use the homotopy method to compute a decentralized controller. Since the centralized controller constitutes the starting point for the method, its existence becomes very important. This paper introduces a non-singular matrix and a design parameter to generate a centralized controller. If the initial centralized controller fails, we can change the value of the design parameter to generate a new centralized controller. A sufficient condition for a decentralized controller is given as a bilinear matrix inequality with three matrix variables: a controller gain matrix and a pair of other matrix variables. Finally, we present numerical examples to validate the proposed decentralized controller design method.
4
Content available Robust switched controller design for linear continuous-time systems
Ilka A., Veselý P.
Archives of Control Sciences
|
2015
|
Vol. 25, no. 4
401--416
EN
In this paper we study a novel approach to the design of a robust switched controller for continuous-time systems described by a novel robust plant model using quadratic stability and multi parameter dependent quadratic stability approaches. In the proposed design procedure with an output feedback a novel quadratic cost function is proposed which allows to obtain different performance dependence on the working points. Finally a numerical examples are investigated.
5
Content available An adaptive output feedback motion tracking controller for robot manipulators: Uniform global asymptotic stability and experimentation
Yarza A., Santibanez V., Moreno-Valenzuela J.
International Journal of Applied Mathematics and Computer Science
|
2013
|
Vol. 23, no. 3
599--611
EN
This paper deals with two important practical problems in motion control of robot manipulators: the measurement of joint velocities, which often results in noisy signals, and the uncertainty of parameters of the dynamic model. Adaptive output feedback controllers have been proposed in the literature in order to deal with these problems. In this paper, we prove for the first time that Uniform Global Asymptotic Stability (UGAS) can be obtained from an adaptive output feedback tracking controller, if the reference trajectory is selected in such a way that the regression matrix is persistently exciting. The new scheme has been experimentally implemented with the aim of confirming the theoretical results.
6
Robust simultaneous stabilization of uncertain discrete-time systems
Pakshin P., Soloviev S.
Systems Science
|
2008
|
Vol. 34, no 1
39-48
EN
The paper considers a set of linear discrete-time systems with uncertain parameters. A method of synthesis of robust control which simultaneously stabilizes all the systems from this set is proposed. This method consists of two steps. First, a set of stochastic comparison systems with multiplicative noises is constructed such that if the stochastic system from this set is mean square stable then the corresponding system with uncertain parameters from the original set is robustly stable. Second, the simultaneous stabilization problem for the comparison system is solved. To find a gain matrix of the simultaneously stabilizing controller in the case of state feedback an LMI based algorithm is given and in the case of static output feedback a new method and convergent iteration algorithm are obtained.
7
Content available remote Hybrid stabilization of discrete-time LTI systems with two quantized signals
Zhai G., Matsumoto Y., Chen X., Imae J., Kobayashi T.
International Journal of Applied Mathematics and Computer Science
|
2005
|
Vol. 15, no 4
509-516
EN
We consider stabilizing a discrete-time LTI (linear time-invariant) system via state feedback where both the quantized state and control input signals are involved. The system under consideration is stabilizable and stabilizing state feedback has been designed without considering quantization, but the system’s stability is not guaranteed due to the quantization effect. For this reason, we propose a hybrid quantized state feedback strategy asymptotically stabilizing the system, where the values of the quantizer parameters are updated at discrete time instants. We also extend the result to the case of static output feedback.
8
Content available remote Disturbance rejection with stability by measurement constant output feedback for linear time-invariant systems
Kiristis K. H.
Foundations of Computing and Decision Sciences
|
2001
|
Vol. 26, No. 4
255-165
EN
The problem of disturbance rejection by constant measurement output feedback is studied. Necessary and sufficient conditions are given for the problem to have a solution. A simple procedure is described for the computation of the feedback that solves the problem. This consists in solving two linear equations over the ring of proper rational matrices.
9
On the computation of a reduced set of quadratic Plucker relations and their use in the solution of the determinantal assignment problem.
Kalogeropoulos G., Kytagias D.
Systems Science
|
2000
|
Vol. 26, nr 2
5-25
EN
An algorithmic method is presented for the computation of a reduced set of quadratic Plucker relations describing completely the Grassmann variety of the corresponding projective space. In particular, it is proven that a set of three terms homogeneous equations can be extracted from the whole set of quadratic Plucker relations. This set contains a specific number of equations, which exactly-constitute a reduced set of quadratic Plucker relations. This is achieved by using a simple criterion based on a correspondence between the coordinates of a decomposable vector and lexicographical orderings. In addition, the algorithm suggested is error-free from numerical computations. The above theory is used for the development of a unifying approach for pole assignment by state and output feedback, for asymptotic observer design and for zero assignment by squaring down for linear time-invariant regular type control systems.
first rewind previous Strona / 1 next fast forward last
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.