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Wyszukujesz frazę "gain design" wg kryterium: Temat

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    Wyświetlanie 1-4 z 4
    Tytuł:
    Gain design of quasi-continuous exponential stabilizing controller for a nonholonomic mobile robot
    Autorzy:
    Nonaka, S.
    Tsujimura, T.
    Izumiya, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/91862.pdf
    Data publikacji:
    2016
    Wydawca:
    Społeczna Akademia Nauk w Łodzi. Polskie Towarzystwo Sieci Neuronowych
    Tematy:
    gain design
    nonholonomic canonical form
    exponential stabilized control
    mobile robot
    Opis:
    The control of nonholonomic canonical form using an invariant manifold is investigated to apply to a mobile robot steered by two independent driving wheels. A quasi-continuous exponential stabilizing controller is designed by using another input pattern. Additionally, the control gain designing method is proposed for this controller. Modified error system of nonholonomic double integrator model is used as nonholonomic canonical form. Generally, the gain cannot be calculated due to the non-linear transform of system. Owing to complicated relation of several parameters, the controller behavior is inconstant by gain pattern. We propose a method of designing gain which uses desired settling time. An approximate equation to obtain designed gains is derived based on the evaluation function. The design method to determine gains of the assumed actual system is simulated. The effectiveness of the proposed method is confirmed by these simulations.
    Źródło:
    Journal of Artificial Intelligence and Soft Computing Research; 2016, 6, 3; 189-200
    2083-2567
    2449-6499
    Pojawia się w:
    Journal of Artificial Intelligence and Soft Computing Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Learning Continuity during COVID-19 Pandemic using the Virtual Classroom – A Cross-border experimental Multi Case Approach
    Autorzy:
    Hasan, Khandakar Kamrul
    Mukherjee, Debarshi
    Saha, Mahasweta
    Powiązania:
    https://bibliotekanauki.pl/articles/1366411.pdf
    Data publikacji:
    2021-06-17
    Wydawca:
    Fundacja Pro Scientia Publica
    Tematy:
    Virtual Classroom
    e-Learning
    Blended Learning
    Design Thinking
    Learning Gain
    Opis:
    Aim. The global pandemic of the COVID-19 outbreak and the subsequent nationwide lockdown have put the endeavours of both academicians and students to the test. The disruptions are even visible in andragogical approaches across higher education institutions both nationally and internationally. Two government-funded universities in India and Bangladesh have decided to explore avenues to switch to an alternative e-platform overcoming the challenges of traditional classroom teaching. The business management faculties of both universities exercise blended learning modules using a design thinking approach. Methods. This exploratory case study involves university students and teachers reflecting the knowledge delivery mechanism in a collaborative online workspace called Virtual Classroom. The authors have adopted the case method to identify evidence-based practices to improve learning gain. This case is motivated by the profound idea of learning continuity where the agenda of teaching-learning should remain status quo as much as possible, even under the constrained situation. Results and Conclusion. This study confirms that the use of curriculum-based blended learning modules based on a design thinking approach is gaining momentum to offer courses in which videoconferencing is a useful tool, as an addition to present methods of teaching inside the classroom, to strengthen learning and to inspire students to practice learning. Acceptance of technology has made learning accessible and pervasive, bridging the digital divide. Originality. It is a pioneering effort to measure the effectiveness of the online learning of two public-funded universities across borders with similar demographics and challenges. This case makes an original contribution through its observation that even the traditional and public-funded universities erstwhile functioning through purely offline mode are gradually switching to online mode. This case also highlights the imminent need for policymakers to augment and integrate blended learning tools with design thinking approaches for tertiary education to reduce the intermittent use of technology, thereby assuring higher learning gain for the students.
    Źródło:
    Journal of Education Culture and Society; 2021, 12, 1; 335-354
    2081-1640
    Pojawia się w:
    Journal of Education Culture and Society
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of loss distribution of conventional boost, Z-source and Y-source converters for wide power and voltage range
    Autorzy:
    Gadalla, B. S.
    Schaltz, E.
    Siwakoti, Y.
    Blaabjerg, F.
    Powiązania:
    https://bibliotekanauki.pl/articles/136154.pdf
    Data publikacji:
    2017
    Wydawca:
    EEEIC International Barbara Leonowicz Szabłowska
    Tematy:
    boost converter
    Z-source converter
    Y-source converter
    winding losses
    core losses
    gain
    thermal design
    reliability
    Opis:
    Boost converters are needed in many applications which require the output voltage to be higher than the input voltage. Recently, boost type converters have been applied for industrial applications, and hence it has become an interesting topic of research. Many researchers proposed different impedance source converters with their unique advantages as having a high voltage gain in a small range of duty cycle ratio. However, the thermal behaviour of the semiconductor devices and passive elements in the impedance source converter is an important issue from a reliability point of view and it has not been investigated yet. Therefore, this paper presents a comparison between the conventional boost, the Z-source, and the Y-source converters based on a thermal evaluation of the semiconductors. In addition, the three topologies are also compared with respect to their efficiency. In this study the results show that the boost converter has higher efficiency than the Z-source and Y-source converter for these specific voltage gain of 2 and 4. The operational principle, mathematical derivations, simulation results and final comparisons are presented in this paper.
    Źródło:
    Transactions on Environment and Electrical Engineering; 2017, 2, 1; 1-9
    2450-5730
    Pojawia się w:
    Transactions on Environment and Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An LMI-based heuristic algorithm for vertex reduction in LPV systems
    Autorzy:
    Sanjuan, Adrián
    Rotondo, Damiano
    Nejjari, Fatiha
    Sarrate, Ramon
    Powiązania:
    https://bibliotekanauki.pl/articles/331436.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    linear parameter varying
    linear matrix inequality
    Gershgorin circles
    gain scheduling
    controller design
    układ liniowy niestacjonarny
    liniowa nierówność macierzowa
    twierdzenie Gerszgorina
    harmonogramowanie wzmocnienia
    Opis:
    The linear parameter varying (LPV) approach has proved to be suitable for controlling many non-linear systems. However, for those which are highly non-linear and complex, the number of scheduling variables increases rapidly. This fact makes the LPV controller implementation not feasible for many real systems due to memory constraints and computational burden. This paper considers the problem of reducing the total number of LPV controller gains by determining a heuristic methodology that combines two vertices of a polytopic LPV model such that the same gain can be used in both vertices. The proposed algorithm, based on the use of the Gershgorin circles, provides a combinability ranking for the different vertex pairs, which helps in solving the reduction problem in fewer attempts. Simulation examples are provided in order to illustrate the main characteristics of the proposed approach.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2019, 29, 4; 725-737
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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