Temat: nonlinear estimation - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Extension of the Hamiltonian approach with general initial conditions
Autorzy:: Navarro, H. A.
Cveticanin, L.
Powiązania:: https://bibliotekanauki.pl/articles/280001.pdf
Data publikacji:: 2018
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: nonlinear dynamics
Hamiltonian approach
error estimation
Opis:: In this paper, the Hamiltonian approach is extended for solving vibrations of nonlinear conservative oscillators with general initial conditions. Based on the assumption that the derivative of Hamiltonian is zero, the frequency as a function of the amplitude of vibration and initial velocity is determined. A method for error estimation is developed and the accuracy of the approximate solution is treated. The procedure is based on the ratio between the average residual function and the total energy of the system. Two computational algorithms are described for determining the frequency and the average relative error. The extended Hamiltonian approach presented in this paper is applied for two types of examples: Duffing equation and a pure nonlinear conservative oscillator.
Źródło:: Journal of Theoretical and Applied Mechanics; 2018, 56, 1; 255-267
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Adaptive fuzzy control for a class of constrained nonlinear systems with application to a surface vessel
Autorzy:: Jamalzade, M S.
Koofigar, H. R.
Ataei, M.
Powiązania:: https://bibliotekanauki.pl/articles/279390.pdf
Data publikacji:: 2016
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: self-regulator
fuzzy PID controller
constraint nonlinear systems
uncertainty
fuzzy estimation
Opis:: In this paper, adaptive control for a class of uncertain nonlinear systems with input constraints is addressed. The main goal is to achieve a self-regulator PID controller whose coefficients are adjusted by using some adaptive fuzzy rules. The constraints on the control signal are taken into account as a saturation operator. The stability of the closed-loop system is analytically proved by using the Lyapunov stability theorem. The proposed method is then applied to a surface vessel with uncertain dynamic equations. The simulation results show the effectiveness of the proposed control strategy.
Źródło:: Journal of Theoretical and Applied Mechanics; 2016, 54, 3; 987-1000
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

Artykuł

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