Temat: optimal feedback control

Skocz do pozycji: 1.

Tytuł:: Optimal feedback control proportional to the system state can be found for non-causal descriptor systems (a remark on a paper by P. C. Müller)
Autorzy:: Kurina, G. K.
Tematy:: automatyka
optimal feedback control
non-causal descriptor systems; Pokaż więcej
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Powiązania:: https://bibliotekanauki.pl/articles/908507.pdf Link otwiera się w nowym oknie
Opis:: Optimal feedback control depending only on the system state is constructed for a control problem by the non-causal descriptor system for which optimal feedback control depending on state derivatives was considered in the paper (Müller, 1998). To this end, a non-symmetric solution of the algebraic operator Riccati equation is used.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Fast optimal feedback controller for electric linear actuator used in spreading systems of road spreaders
Autorzy:: Dobrowolski, D.
Dobrowolski, J.
Piekarska, W.
Stępień, S.
Tematy:: linear electric actuator
nonlinear modelling
optimal feedback control; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:: https://bibliotekanauki.pl/articles/201515.pdf Link otwiera się w nowym oknie
Opis:: Modern and innovative road spreaders are now equipped with a special swiveling mechanism of the spreading disc. It allows for adjusting asymmetrical or a symmetrical spreading pattern and provides for the possibility to maintain the size of the spreading surface and achieve an accurately defined spreading pattern with spreading widths. Thus the paper presents a modelling and control design methodology, and the concept is proposed to design high-performance and optimal drive systems for spreading devices. The paper deals with a nonlinear model of an electric linear actuator and solution of the new intelligent/optimal control problem for the actuator.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: From optimal control to non-cooperative differential games: a homotopy approach
Autorzy:: Bressan, A.
Tematy:: optimal control
non-cooperative differential games
Nash equilibrium solution
optimal feedback control; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Badań Systemowych PAN
Powiązania:: https://bibliotekanauki.pl/articles/970911.pdf Link otwiera się w nowym oknie
Opis:: We propose a new approach to the study of Nash equilibrium solutions to non-cooperative differential games. The original problem is embedded in a one-parameter family of differential games, where the parameter 0 ∈ [0,1] accounts for the strength of the second player. When 0 = 0, the second player adopts a myopic strategy and the game reduces to an optimal control problem for the first player. As 0 becomes strictly positive, Nash equilibrium solutions can be obtained by studying a bifurcation problem for the corresponding system of Hamilton-Jacobi equations.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: TM-AFM nonlinear motion control with robustness analysis to parametric errors in the control signal determination
Autorzy:: Balthazar, J. M.
Tusset, A. M.
Bueno, Á. M.
Tematy:: AFM
SDRE control
optimal linear feedback control
uncertainty; Pokaż więcej
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Powiązania:: https://bibliotekanauki.pl/articles/281314.pdf Link otwiera się w nowym oknie
Opis:: Nonlinear motion of the microcantilever probe in the Atomic Force Microscope (AFM) has been extensively studied considering mainly the van der Waals forces. Since the behavior of the microcantilever is vital to quality of generated images, the study of control strategies that force the probe to avoid undesired behavior such as chaotic motion, is also of significant importance. A number of published works has shown that the microcantilever is subject to chaotic motion for a certain combination of parameters. For such a parameter combination, the control system must suppress the chaotic motion. Here, an study of the AFM mathematical model is presented, aiming to find a region of operation of the AFM where the motion is chaotic. In order to suppress the chaotic motion, a periodic orbit of the system is obtained, and the controller forces the system to that periodic orbit. Two control strategies are used, namely: The State Dependent Riccati Equation (SDRE) and the Optimal Linear Feedback Control (OLFC). Both control strategies consider the complete nonlinearities of the system, and the OLFC guarantees the global stability. The numerical simulations carried out showed the efficiency of the control methods as well as the sensitivity of each control strategy to parametric errors. Without the parametric errors, both control strategies were effective in maintaining the system into the desired orbit. On the other hand, in the presence of parametric errors, the SDRE technique was more robust than the OLFC.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Stochastic diffrential equations on Banach spaces and their optimal feedback control
Autorzy:: Ahmed, N.U.
Tematy:: stochastic differential equations
Banach spaces
optimal feedback control
objective functionals
Lévy-Prohorov metric
Hausdorff dimension
time-optimal problems; Pokaż więcej
Wydawca:: Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Powiązania:: https://bibliotekanauki.pl/articles/952179.pdf Link otwiera się w nowym oknie
Opis:: In this paper we consider stochastic differential equations on Banach spaces (not Hilbert). The system is semilinear and the principal operator generating a C₀-semigroup is perturbed by a class of bounded linear operators considered as feedback operators from an admissible set. We consider the corresponding family of measure valued functions and present sufficient conditions for weak compactness. Then we consider applications of this result to several interesting optimal feedback control problems. We present results on existence of optimal feedback operators.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Optimal control of feedback control systems governed by hemivariational inequalities
Autorzy:: Zeng, Biao
Huang, Yong
Liu, Zhenhai
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

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Skocz do pozycji: 7.

Tytuł:: Optimal control problems with a fixed terminal time in linear fractional-order systems
Autorzy:: Gomoyunov, M. I.
Tematy:: optimal control
fractional derivatives
linear systems
open-loop control
feedback control
reduction; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:: https://bibliotekanauki.pl/articles/1403685.pdf Link otwiera się w nowym oknie
Opis:: The paper deals with an optimal control problem in a dynamical system described by a linear differential equation with the Caputo fractional derivative. The goal of control is to minimize a Bolza-type cost functional, which consists of two terms: the first one evaluates the state of the system at a fixed terminal time, and the second one is an integral evaluation of the control on the whole time interval. In order to solve this problem, we propose to reduce it to some auxiliary optimal control problem in a dynamical system described by a first-order ordinary differential equation. The reduction is based on the representation formula for solutions to linear fractional differential equations and is performed by some linear transformation, which is called the informational image of a position of the original system and can be treated as a special prediction of a motion of this system at the terminal time. A connection between the original and auxiliary problems is established for both open-loop and feedback (closed-loop) controls. The results obtained in the paper are illustrated by examples.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Optimal control of ∞-dimensional stochastic systems via generalized solutions of HJB equations
Autorzy:: Ahmed, N.
Tematy:: optimal control
stochastic systems
infinite dimension
HJB equation
stationary feedback control; Pokaż więcej
Wydawca:: Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Powiązania:: https://bibliotekanauki.pl/articles/729348.pdf Link otwiera się w nowym oknie
Opis:: In this paper, we consider optimal feedback control for stochastc infinite dimensional systems. We present some new results on the solution of associated HJB equations in infinite dimensional Hilbert spaces. In the process, we have also developed some new mathematical tools involving distributions on Hilbert spaces which may have many other interesting applications in other fields. We conclude with an application to optimal stationary feedback control.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Synthesis of quasi-optimal motion crane’s control in the form of feedback
Autorzy:: Lovejkin, V.
Romasevich, Y.
Chovnuk, Y.
Tematy:: quasi-optimal control
crane
load vibrations
dynamic programming
control in the form of feedback; Pokaż więcej
Wydawca:: Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Powiązania:: https://bibliotekanauki.pl/articles/384640.pdf Link otwiera się w nowym oknie
Opis:: The solution of the problem of optimal crane’s control is proposed in this article. The crane’s model is adopted as two-mass. The synthesized quasi-optimal control allows one to eliminate vibrations during braking load of the crane. Control is a function of phase coordinates of dynamic system ”truck-load“ and it’s limited in size. One may use for the solution of the problem the method of dynamic programming. The results are illustrated with the help of graphics which are bold on the phase planes.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Linear Quadratic Control Problem With Fixed Final State for Discrete-Time Distributed Systems
Autorzy:: Chraibi, L.
Karrakchou, J.
Ouansafi, A.
Rachik, M.
Tematy:: sterowność
prawo sprzężenia zwrotnego
sterowanie optymalne
exact controllability
feedback law
open loop
optimal control
quadratic control; Pokaż więcej
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Powiązania:: https://bibliotekanauki.pl/articles/911211.pdf Link otwiera się w nowym oknie
Opis:: The problem considered is that of minimizing a quadratic cost functional for a discrete distributed system with fixed initial and final states. It is shown that under suitable controllability assumptions, there is a close relationship between this problem and that of exact controllability with minimization of a time-varying energy criterion. The HUM technique is then extended to treat the exact controllability problem in the time-varying case and applied to provide an explicit form for the optimal control and the optimal cost.
Dostawca treści:: Biblioteka Nauki

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