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Browsing by Author Vu, Thi Lien

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    • Adaptive Energy Management in Microgrid Based on New Training Strategy for ANFIS
    Authors: M. Elsisi; Minh-Quang Tran; Vu, Thi Lien; Nguyen, Thi Thanh Nga;  Advisor: -;  Co-Author: - (2022)

    Managing procedure for charging and discharging battery system plays an essential contributor in improving the performance of energy storage system for example increment of utilizing batteries. This paper aims to develop a new hybrid genetic algorithm-based proportional integral (GA-based PI) controller with an adaptive neuro-fuzzy inference system (ANFIS) for the charging balance of batteries. The dataset is generated by using the GA-based PI controller, then a training strategy is introduced for the ANFIS controller. The proposed approach is evaluated by the GA-based PI controller and the PI controller based on Ziegler Nichols method.
    • Adaptive Energy Management in Microgrid Based on New Training Strategy for ANFIS
    Authors: Elsisi, M.; Minh, Quang Tran; Vu, Thi Lien; Nguyen, Thi Thanh Nga;  Advisor: -;  Co-Author: - (2022)

    Managing procedure for charging and discharging battery system plays an essential contributor in improving the performance of energy storage system for example increment of utilizing batteries. This paper aims to develop a new hybrid genetic algorithm-based proportional integral (GA-based PI) controller with an adaptive neuro-fuzzy inference system (ANFIS) for the charging balance of batteries. The dataset is generated by using the GA-based PI controller, then a training strategy is introduced for the ANFIS controller. The proposed approach is evaluated by the GA-based PI controller and the PI controller based on Ziegler Nichols method
    • Comprehensive design method of a soft multifocal contact lens with NURBS
    Authors: Vu, Thi Lien; Vu, Ngoc Pi; Nguyen, Thi Quoc Dung;  Advisor: -;  Co-Author: - (2022)

    This study presents a comprehensive method for designing a multifocal contact lens (MCL) with Snell’s law and non-uniform rational B-spline (NURBS) curves. Instead of using thin lens approximation, general mathematical formulas have been developed to achieve the accurate coordinates of points on the anterior lens surface profile of the MCL to meet various given optical power distributions. Then the NURBS curve is adjusted to fit these data points to obtain the smooth front lens surface profile. This method not only improves the accuracy of the optical power profiles of MCLs but also reduces the spherical aberration in near/distance optical zones. The experimental results show that the...