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Wyszukujesz frazę "Pati, B. B." wg kryterium: Autor


Wyświetlanie 1-3 z 3
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
Artykuł
Tytuł:
Structural Formulation and Self-Oscillation Prediction in Multidimensional Nonlinear Closed-Loop Autonomous Systems
Autorzy:
Patra, K. C.
Pati, B. B.
Łozowicki, A.
Powiązania:
https://bibliotekanauki.pl/articles/908300.pdf
Data publikacji:
1999
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
diagram
fazor
cykl graniczny
układ nieliniowy
universal chart
phasor diagram
limit cycles
multidimensional
nonlinear system
describing function
Opis:
This paper describes the structure of a general two-dimensional nonlinear closed-loop system and application of the universal chart, leading to the use of computer graphics, for a systematic analysis of the complex problem of predicting self-oscillations (limit cycles). The graphical approach provides an explicit and novel insight into the conditions for the occurrence of limit cycles in such systems. This technique forms the basis of computer algorithms for predicting limit cycles in multidimensional nonlinear systems. Application of the technique has been illustrated through examples and comparison of results with digital simulation in MATLAB 4.0/SIMULINK 1.3.
Źródło:
International Journal of Applied Mathematics and Computer Science; 1999, 9, 2; 327-346
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Predicting Tachypleus gigas Spawning Distribution with Climate Change in Northeast Coast of India
Autorzy:
Pati, Siddhartha
Shahimi, Salwa
Nandi, Debabrata
Sarkar, Tanmay
Acharya, Satya N.
Sheikh, Hassan I.
Acharya, Dipti Kanta
Choudhury, Tanupriya
Akbar John, B.
Nelson, Bryan R.
Dash, Bisnu Prasad
Edinur, Hisham Atan
Powiązania:
https://bibliotekanauki.pl/articles/1839192.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
ecology
sustainability
season
arthropods
environment
temperature
Opis:
Species distribution models are used to predict ideal grounds, species range, and spatial shifts in an ecology over a span of time. With an aim to use Maximum entropy model (MaxEnt), presence records and pseudo-absence points are used to predict the Tachypleus gigas spawning activity for 2030 and 2050 in northeast India. The bearings of sixty T. gigas spawning grounds identified in 2018 were inserted into ArcGIS v.10.1. Meanwhile, 19 environment variables were inserted into MaxEnt v. 3.3.3, before the model performance was tested using receiver operational characteristics and area under curve (AUC). With an AUC of 0.978,85% was achieved for isothermality (bio3) and 74% for temperature (x̄= average) of the wettest quarter (bio8), all of which were inserted into ArcGIS to produce spatial maps. Although we learnt that T. gigas are still spawning in Odisha in 2030 and 2050, their distribution range is predicted to shrink due to the coastal morphology change. The climate conditions in Odisha revolve with the monsoon, summer and winter seasons from which, temperature variations do not only influence the annual absence/presence of spawning adults but also, the survival of juveniles in natal beaches. The use of MaxEnt offers novelty to predict population sustainability of arthropods characterized by oviparous spawning (horseshoe crabs, turtles, terrapins and crocodiles) through which, the government of India can take advantage of the present data to initiate the coastal rehabilitation measures to preserve their spawning grounds.
Źródło:
Journal of Ecological Engineering; 2021, 22, 3; 211-219
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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