Dr. V. I. George
(M) 9448548101, E mail- vig_rect@, drvigeorge@
A Brief Biodata
• V. I. George was born in 1961 and completed BE in Electrical Power Engg. (1983) Mysore University, M.Tech (1987) in Instrumentation and Control Engg from NIT, Calicut, and Ph. D (2004) in ‘Robust Control of Dynamic Systems’ from NIT, Tiruchirappalli.
• He joined MIT, Manipal as a faculty in the department of Electrical and Electronics Engineering in 1985, 1992 promoted as a Reader, 2004 as a Professor and Head in the Dept. of Instrumentation and Control Engineering (ICE). During his tenure as HOD of Dept of ICE started two postgraduate programs, one, in ‘Control systems’, and the other in ‘Astronomy and Space Engg’, which was later renamed as Aerospace Engg, and started the Control Instrumentation System Conference (CISCON) in 2004 at MIT, Manipal.
• Responsibilities at Jaipur: During the period 2012 -13 deputed to Manipal University Jaipur (MUJ) with the duties of Registrar,
EDUCATION
BE in Electrical Power Engg. (1983) Mysore University,
M.Tech (1987) in Instrumentation and Control Engg from NIT, Calicut,
Ph. D (2004) in ‘Robust Control of Dynamic Systems’ from NIT, Tiruchirappalli.
RESEARCH INTERESTS
Control Systems, Instrumentation , Aerospace control
75
Scopus Publications
Scopus Publications
REVIEW ON HUMAN-CENTRIC LIGHTING FOCUSING ON SMART SOLID-STATE LIGHTING AND SWITCHABLE GLAZING Veena Mathew, Anna Merine George, Susan G Varghese, Ciji Pearl Kurian, Nevin Augustine, V.I. George Journal of Green Building, 2025 This study presents a literature review on human centric lighting, utilizing solid-state lighting and switchable glazing, which has immense potential to create comfortable and productive environments. Windows and shading devices of a building are the essential components that allow natural daylight to enter indoors, thereby maintaining a relationship between the interior and exterior environments. Artificial light sources are always integrated with natural light to provide the right lighting environment. Achieving a balance between natural and artificial light is crucial; the efficiency depends on how effectively artificial light is combined with daylight. This paper explores the benefits of intelligent solid-state lighting and switchable glazing technology in creating a comfortable and energy-efficient environment. Lighting metrics for assessing circadian entrainment and algorithms for optimizing visual and thermal comfort along with energy efficiency are the main topics of concern. By optimizing lighting and temperature control, workplaces can increase productivity and promote circadian entrainment. This review considers papers mainly from 2004 to 2023, challenges and problems in implementation, along with future directions are also considered. If the right spectrally controllable source is designed by giving a suitable light exposure for the right duration, it is possible to achieve comfort, health, and energy efficiency. This integrative lighting solution provides new and innovative ways to enhance our daily lives. Climate-responsive algorithms seem more reliable for switchable glazing; overall circadian performance improves when mixed with natural light.
Preface Lecture Notes in Electrical Engineering, 2024
Nonlinear Dynamic Modeling of a Quadrotor and Its Control Using Sliding Mode Controller Tinu Valsa Paul, George Vadakkekara Itty, Thirunavukkarasu Indiran Journal of Aerospace Engineering, 2023 In this paper, an attempt has been made to implement the classical second order SMC for a nonlinear model of the Quadrotor with varied trajectories in a closed loop in simulation for the available model along with the model identified for Hexsoon Edu 450 Quadrotor. The controller is developed using an equivalent control technique that was realized using MATLAB. Because the quadrotor system is complex, the dynamic modeling has to be done by considering six degrees of freedom prior to the controller design. Primarily the attitude controllers of the quadrotor should be settled at the desired values. Then, the position controllers must be stabilized using effective tuning of the parameters of the controller. This paper presents a three-dimensional trajectory tracking of the quadrotor using a sliding mode controller (SMC) which is stable and accurate as per the comparison because the maneuvering of the quadrotor is a quick process. The results of the designed (SMC) are compared with a nonlinear PID controller in the literature. The result proved the robustness of the SMC against the uncertainties of the system compared with NPID.
Experimental Investigations towards the Design of Power Management System Using Indoor Photovoltaic Anna Merine George, Ciji Pearl Kurian, S. Y. Kulkarni, Veena K N, V. I. George Proceedings of IEEE International Conference on Modelling Simulation and Intelligent Computing Mosicom 2023, 2023 With the increasing popularity of Internet-of-Things (IoT) based building automation and lighting controls in the interior, the power management of IoT devices is a concern. Researchers globally are working on Indoor high-performance photovoltaics, which can power IoT devices. Here arises the need for experimentation with Indoor Photovoltaics (IPV) under varying interior lighting conditions that includes both artificial light and daylight. This paper focuses on experimental verification of the IPV characterization under indoor lighting conditions, adopting the recent human-centric lighting challenges. The paper presents empirical modeling of indoor irradiance and Photovoltaic cells to estimate its I-V characteristics and focuses on their operation at indoor illumination levels. A crucial requirement for accomplishing self-sustainability is the ability of IoT devices to be self-powered.
Development of a Nonlinear Model Predictive Control-Based Nonlinear Three-Mode Controller for a Nonlinear System Suraj Suresh Kumar, Thirunavukkarasu Indiran, George Vadakkekkara Itty, Prajwal Shettigar J, Tinu Valsa Paul ACS Omega, 2022 This paper presents the novelty on a nonlinear proportional integral derivative (NPID) controller developed from the gain values obtained using the Lyapunov-based nonlinear model predictive controller (LyNMPC). The tuning parameters of the proposed controller are taken from the dynamics of the nonlinear system, and these parmeters are dynamic with their value varying according to the error in the system. In this article, the authors have considered two highly nonlinear systems, namely, batch polymerization reactor and quadrotor unmanned aerial vehicle systems. The nonlinear mathematical modeling of the batch reactor as well as the quadrotor system considered from the past literature of authors. The acrylamide polymerization reaction under consideration is an exothermic reaction, thereby making the temperature profile tracking and control a challenging task. The primary aim of this article is to develop the NPID controller based on the LyNMPC algorithm and to validate the NPID on a batch reactor bench-scale plant and on an hardware-in-the-loop platform for the quadrotor hardware. A comparative study of trajectory tracking and control capabilities of LyNMPC on derived non-linear models of the batch reactor and quadrotor system is presented. The system mathematical models are obtained with the help of the first-principle energy balance equation for the batch reactor and with the nonlinear dynamics of the quadrotor which is derived based on Newton–Euler formulations. With LyNMPC, the stability of the nonlinear systems can be improved because the error sensitivity is considered in the cost function.
Simulation of Nonlinear Proportional Integral Derivative Controller for a Nonlinear Model of a HexSoon EDU 450 Quadrotor Aerial Robot Suraj Suresh Kumar, Thirunavukkarasu Indiran, George Vadakkekara Itty, Chirag Gupta Proceedings of the 2022 3rd International Conference on Intelligent Computing Instrumentation and Control Technologies Computational Intelligence for Smart Systems Icicict 2022, 2022 This paper is written in conjunction with the research for developing the control schemes for a model of quadrotor unmanned aerial vehicle based on actual hardware. The primary aim is to reflect the outcomes of designing nonlinear control algorithms for in-situ hardware equipment where the physical parameters have been determined through direct measurement and estimation. A comprehensive study of the trajectory tracking and control capabilities of Non-linear Proportional Integral Derivative control on a derived non-linear model of the quadrotor system is presented. The system mathematical model is obtained with the help of the nonlinear dynamics of the quadcopter which is derived with the help of Newton-Euler formulations. Thus, the model obtained includes the aerodynamic effects and the rotor dynamics of the quadrotor. Simulations were used for evaluating and comparing the performances of the two control techniques developed between their dynamic performances and stability.
Tri-Tilting Rotor Fixed-Wing VTOL UAV: Dynamic Modelling and Transition Flight Control Navya Thirumaleshwar Hegde, V. I. George, C Gurudas Nayak ACM International Conference Proceeding Series, 2021 This paper gives the dynamic modeling and design of a controller for autonomous Vertical take-off and landing (VTOL) Tri-Tilt rotor hybrid Unmanned Aerial Vehicle (UAV). Nowadays, UAVs have experienced remarkable progress and mainly categorized into fixed-wing UAVs and rotary-wing UAVs. The Tri Tiltrotor UAV models are derived mathematically using Euler's force and moment equations for VTOL to horizontal flight and vice-versa using MATLAB. The development of fully autonomous and self-guided UAVs would reduce the risk to human life. The applications consist of inspection of coasts, terrain, border, patrol buildings, rescue teams, police, and pipelines. A Proportional-Integral-Derivative control method is proposed for UAVs attitude and altitude stabilization. The results reveal that the controller accomplishes adaptability, robust performance and stability in the transition mode.
IOT based Smart Traffic Light Control System Anna Merine George, V.I. George, Mary Ann George 2018 International Conference on Control Power Communication and Computing Technologies Iccpcct 2018, 2018
Sliding mode controller for parallel rotary double inverted pendulum: An eigen structure assignment approach International Journal of Control Theory and Applications, 2016
Normalized cross correlation for stereo matching under varying illumination International Journal of Control Theory and Applications, 2016
Fuzzy logic based window blind controller maximizing visual comfort, thermal comfort and energy conservation suitable for tropical climate Journal of the Institution of Engineers India Architectural Engineering Division, 2008
