Temat: cyclic coordinate - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Digital image correlation technique as a tool for kinematics assessment of structural components
Autorzy:: Brodecki, A.
Szymczak, T.
Kowalewski, Z.
Powiązania:: https://bibliotekanauki.pl/articles/970572.pdf
Data publikacji:: 2018
Wydawca:: Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:: digital image correlation system
cyclic loading
PONTOS
motion
displacement
3D coordinate system
Opis:: The paper reports the results of tests carried out for kinematic properties determination of components under cyclic loading. DIC system called 5M PONTOS was employed to follow variations of displacement versus time. It was conducted by the use of markers stuck on selected sections of components tested. The results are presented in 2D and 3D coordinate systems expressing behaviour of such elements as: mechanical coupling device, boat frame and car engine. These data enabled to capture weak and strong sections of the component examined at various loading conditions.
Źródło:: Acta Mechanica et Automatica; 2018, 12, 2; 101-104
1898-4088
2300-5319
Pojawia się w:: Acta Mechanica et Automatica
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 2.

Tytuł:: Interconnection and damping assignment passivity-based control of an underactuated 2-DOF gyroscope
Autorzy:: Cordero, G.
Santibáñez, V.
Dzul, A.
Sandoval, J.
Powiązania:: https://bibliotekanauki.pl/articles/330192.pdf
Data publikacji:: 2018
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:: gyroscope device
gyroscopic force
cyclic coordinate
generalized momenta
Routh’s equation
IDA-PBC
żyroskop
siła żyroskopowa
współrzędna cykliczna
równanie Routha
Opis:: In this paper we present interconnection and damping assignment passivity-based control (IDA-PBC) applied to a 2 degrees of freedom (DOFs) underactuated gyroscope. First, the equations of motion of the complete system (3-DOF) are presented in both Lagrangian and Hamiltonian formalisms. Moreover, the conditions to reduce the system from a 3-DOF to a 2-DOF gyroscope, by using Routh’s equations of motion, are shown. Next, the solutions of the partial differential equations involved in getting the proper controller are presented using a reduction method to handle them as ordinary differential equations. Besides, since the gyroscope has no potential energy, it presents the inconvenience that neither the desired potential energy function nor the desired Hamiltonian function has an isolated minimum, both being only positive semidefinite functions; however, by focusing on an open-loop nonholonomic constraint, it is possible to get the Hamiltonian of the closed-loop system as a positive definite function. Then, the Lyapunov direct method is used, in order to assure stability. Finally, by invoking LaSalle’s theorem, we arrive at the asymptotic stability of the desired equilibrium point. Experiments with an underactuated gyroscopic mechanical system show the effectiveness of the proposed scheme.
Źródło:: International Journal of Applied Mathematics and Computer Science; 2018, 28, 4; 661-677
1641-876X
2083-8492
Pojawia się w:: International Journal of Applied Mathematics and Computer Science
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Informacja

Wyszukujesz frazę "cyclic coordinate" wg kryterium: Temat

Źródło danych

Dostawca treści

Kolekcja

Rok wydania

Wydawca

Temat

Autor

Typ dokumentu

Język