There is, I think, something ethereal about i —the square root of minus one. I remember first hearing about it at school. It seemed an odd beast at that time—an intruder hovering on the edge of reality.

Usually familiarity dulls this sense of the bizarre, but in the case of i it was the reverse: over the years the sense of its surreal nature intensified. It seemed that it was impossible to write mathematics that described the real world in …

I and i

System Identification I

Sensors are becoming increasingly significant in our daily life because of the rapid development in electronic and information technologies, including Internet of Things, wearable electronics, home automation, intelligent industry, etc. There is no doubt that their performances are primarily determined by the sensing materials. Among all potential candidates, layered nanomaterials with two-dimensional (2D) planar structure have numerous superior properties to their bulk counterparts which are suitable for building various high-performance sensors. As an emerging 2D material, MXenes possess several advantageous features of adjustable surface properties, tunable bandgap, and excellent mechanical strength, making them attractive in various applications. Herein, we particularly focus on the recent research progress in MXene-based sensors, discuss the merits of MXenes and their derivatives as sensing materials for collecting various signals, and try to elucidate the design principles and working mechanisms of the corresponding MXene-based sensors, including strain/stress sensors, gas sensors, electrochemical sensors, optical sensors, and humidity sensors. In the end, we analyze the main challenges and future outlook of MXene-based materials in sensor applications.

Ti3C2TX MXene for Sensing Applications: Recent Progress, Design Principles, and Future Perspectives.

Optimal operation of hybrid AC/DC microgrids under uncertainty of renewable energy resources: A comprehensive review

Face recognition: Past, present and future (a review)

Due to rapid advancement in technology, recently a significant amount of work has been carried out in the field of multi-mode sensor and multifunctional sensor. A single unit of multifunctional sensor provides multiple measurements, which eventually reduces the cost of multiple sensors and makes the system compact. Though the risk of sensor failure and reliability of the multifunctional sensor is always imminent, researchers are working out different methods to make the sensor fault tolerant. Multifunctional sensors are getting widespread acceptance in a variety of fields. This paper provides a review of recent advances in multifunctional sensor technology in the perspective of a multi-sensor system. Different aspects of design and implementation of multifunctional sensor technology have been addressed in this paper. This paper can serve as a basic reading material for students and researchers pursuing research on a multifunctional sensor.

Recent Advances in Multifunctional Sensing Technology on a Perspective of Multi-Sensor System: A Review

To utilize the power generated from renewable energy sources and use it in stand-alone or grid integrated application, power conditioning unit (PCU) is required. The main consideration in designing...

Overview of High-Step-Up DC–DC Converters for Renewable Energy Sources

Because of the increasing instances of identity theft and terrorism incidences in past few years, biometrics based security system has been an area of quality research. Modern day biometrics is a cutting edge technology which enables the automated system to distinguish between a genuine person and an imposter. Automated face recognition is one of the areas of biometrics which is widely used because of the uniqueness of one human face to other human face. Automated face recognition has basically two parts one is face detection and other one is recognition of detected faces. To detect a face from an online surveillance system or an offline image, the main component that should be detected is the skin areas. This paper proposes a skin based segmentation algorithm for face detection in color images with detection of multiple faces and skin regions. Skin color has proven to be a useful and robust cue for face detection, localization and tracking.

http://www.ijsrp.org/research_paper_jun2012/ijsrp-June-2012-25.pdf

Automatic Face Detection Using Color Based Segmentation

This paper gives an overview of data acquisition, data logging and supervisory control system of a plant consisting of multiple boilers. Data acquisition, data logging and supervisory control are the basic building blocks of plant automation. This paper takes a case study of plant consisting of multiple boilers where multiple process variables of the boilers need to be acquired from the field and monitored. The data of the process variables needs to be logged in a database for further analysis and supervisory control. A LabVIEW based data logging and supervisory control program simulates the process and the generated data are logged in to the database with proper indication about the status of the process variable.

Data logging and supervisory control of process using LabVIEW

This study provides a step-by-step analysis of a parametric system identification procedure which provides a singleinput single-output, linear time invariant time-delay model of a liquid-liquid heat exchanger system. Different linear and blockoriented models are used to develop a control relevant identification model. The prediction error method is used to estimate the model parameters. From the simulation results, it can be found that the output error model (linear model) and Hammerstain- Wiener model (block-oriented model) provide the best model validation for a heat exchanger system at 72.23% and 81.5 % goodness-of-FIT, respectively. To achieve the control objectives of the system, the classical proportional-integral-derivative (PID) controller is used. For controller design, the linear model is considered. An industrial process is prone to encounter different uncertainties. Considering the time delay of the estimated linear model as the uncertainty, a ℋ
 ∞
 criterion is used to find out the robust parameters of the PID controller. The developed controller satisfies the sensitivity constraints. Stability boundary locus of (K
 p
,K
 i
), (K
 p
,K
 d
) and (K
 d
,K
 i
) of the PID controller have been plotted to illustrate the robust parameters of the PID controller.

https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/iet-cta.2017.1128

Subhransu Padhee

Papers

Recent Advances in Multifunctional Sensing Technology on a Perspective of Multi-Sensor System: A Review

Overview of High-Step-Up DC–DC Converters for Renewable Energy Sources

Automatic Face Detection Using Color Based Segmentation

Data logging and supervisory control of process using LabVIEW

Parametric System Identification and Robust Controller Design for Liquid-Liquid Heat Exchanger System