Autor: Das, B. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: First principles calculations of thermodynamic properties of ZrB2
Autorzy:: Wani, T. A.
Das, B. K.
Powiązania:: https://bibliotekanauki.pl/articles/240687.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: TMB2
thermal expansion
Gruneisen parameter
debye temperature
specific heat
ekspandowanie termiczne
ciepło właściwe
rozszerzalność termiczna
Opis:: The thermodynamic properties, which are the important bulk properties for solids, have been investigated for ZrB2 under pressure through the quasi harmonic Debye model. The dependences of thermal expansion, Gruneisen parameter, Debye temperature and specific heat on pressure P are successfully obtained. The obtained results are in a good agreement with the available experimental and other theoretical data.
Źródło:: Archives of Thermodynamics; 2018, 39, 4; 113--124
1231-0956
2083-6023
Pojawia się w:: Archives of Thermodynamics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Adaptive sliding mode formation control of multiple underwater robots
Autorzy:: Das, B.
Subudhi, B.
Pati, B. B.
Powiązania:: https://bibliotekanauki.pl/articles/229471.pdf
Data publikacji:: 2014
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: AUV
SMC
passivity
cooperative control
Opis:: This paper proposes a new adaptive sliding mode control scheme for achieving coordinated motion control of a group of autonomous underwater vehicles with variable added mass. The control law considers the communication constraints in the acoustic medium. A common reference frame for velocity is assigned to a virtual leader dynamically. The performances of the proposed adaptive SMC were compared with that of a passivity based controller. To save the time and traveling distance for reaching the FRP by the follower AUVs, a sliding mode controller is proposed in this paper that drives the state trajectory of the AUV into a switching surface in the state space. It is observed from the obtained results that the proposed SMC provides improved performance in terms of accurately tracking the desired trajectory within less time compared to the passivity based controller. A communication consensus is designed ensuring the transfer of information among the AUVs so that they move collectively as a group. The stability of the overall closed-loop systems are analysed using Lyapunov theory and simulation results confirmed the robustness and efficiency of proposed controller.
Źródło:: Archives of Control Sciences; 2014, 24, 4; 515-543
1230-2384
Pojawia się w:: Archives of Control Sciences
Dostawca treści:: Biblioteka Nauki

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