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Institution

National Institute of Technology, Silchar

EducationSilchar, Assam, India
About: National Institute of Technology, Silchar is a education organization based out in Silchar, Assam, India. It is known for research contribution in the topics: Control theory & Electric power system. The organization has 1934 authors who have published 4219 publications receiving 41149 citations. The organization is also known as: NIT Silchar.


Papers
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Journal ArticleDOI
TL;DR: A boosting aided adaptive cluster-based undersampling technique is proposed to facilitate elimination of learning- insignificant majority class instances from the clusters, detected through AdaBoost ensemble learning model.
Abstract: The subject of a class imbalance is a well-investigated topic which addresses performance degradation of standard learning models due to uneven distribution of classes in a dataspace. Cluster-based undersampling is a popular solution in the domain which offers to eliminate majority class instances from a definite number of clusters to balance the training data. However, distance-based elimination of instances often got affected by the underlying data distribution. Recently, ensemble learning techniques have emerged as effective solution due to its weighted learning principle of rare instances. In this article, a boosting aided adaptive cluster-based undersampling technique is proposed to facilitate elimination of learning- insignificant majority class instances from the clusters, detected through AdaBoost ensemble learning model. The proposed work is validated with seven existing cluster based undersampling techniques for six binary datasets and three classification models. The experimental results have established the effectives of the proposed technique than the existing methods.

23 citations

Journal ArticleDOI
TL;DR: In this article, the authors compared the performance of a sliding mode controller (SMC) and a fractional-order SMC (FOSMC) for position control of a ferromagnetic ball against gravity in a Magnetic Levitation (MagLev) system.
Abstract: This paper focuses on the comparative performances between a Sliding Mode Controller (SMC) and a Fractional-Order SMC (FOSMC). Both the SMC and FOSMC are applied to position control of a ferromagnetic ball against gravity in a Magnetic Levitation (MagLev) system. This paper is the extended version of Roy et al. (in: 2017 Indian control conference (ICC), pp 473–478, 2017). In addition to the contribution of Roy et al. (2017), this paper (i) shows the better potential of an FOSMC over a SMC which is illustrated analytically and (ii) finds the bounds of uncertainty of the parameters of the MagLev system using frequency domain analysis. Experimental results validate the theoretical propositions. The comparative analysis based on these results reveals that the FOSMC performs better than the SMC in terms of tracking accuracy, speed of response, chattering, control effort, and control energy.

23 citations

Journal ArticleDOI
TL;DR: In this paper, the efficacy of 50'keV Ar+ion irradiation to achieve self-organized nano-channel based structures at a threshold fluence of 5'×'1016'ions/cm2 at ambient temperature is presented.
Abstract: Towards developing next generation scalable TiO2-based resistive switching (RS) memory devices, the efficacy of 50 keV Ar+-ion irradiation to achieve self-organized nano-channel based structures at a threshold fluence of 5 × 1016 ions/cm2 at ambient temperature is presented. Although x-ray diffraction results suggest the amorphization of as-grown TiO2 layers, detailed transmission electron microscopy study reveals fluence-dependent evolution of voids and eventual formation of self-organized nano-channels between them. Moreover, gradual increase of TiO/Ti2O3 in the near surface region, as monitored by x-ray photoelectron spectroscopy, establishes the upsurge in oxygen deficient centers. The impact of structural and chemical modification on local RS behavior has also been investigated by current-voltage measurements in conductive atomic force microscopy, while memory application is manifested by fabricating Pt/TiO2/Pt/Ti/SiO2/Si devices. Finally, the underlying mechanism of our experimental results has been analyzed and discussed in the light of oxygen vacancy migration through nano-channels.

23 citations

Journal ArticleDOI
TL;DR: The merit of this event-triggered SMC based on reaching law includes fast convergence of sliding hyperplane without excessive chattering and allows designers more freedom to select the design parameters to achieve desired steady state bound in the presence of the disturbances/uncertainties.

23 citations

Book ChapterDOI
01 Jan 2019
TL;DR: In this article, the history and development of photochemical machining in brief are discussed followed by gaps identified along with scope for the work and then the PCM process is explained in detail.
Abstract: The chapter focuses on the history and the development of photochemical machining in brief. The relevant studies related to photochemical machining and parametric effect are also discussed followed by gaps identified along with scope for the work and then the PCM process is explained in detail. The significant control parameters and their effect on the response measures are demonstrated with a fishbone diagram is explored. Further the detailed parametric effect on the response measures along with the scientific explanation of the effect is presented. The chapter is concluded with the two case studies (i.e., PCM of brass and Inconel 718).

23 citations


Authors

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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
202335
2022149
2021947
2020742
2019596
2018451