Papers by Glan D E V A D H A S Devadhas
Recent Developments in Control of Car like Robot using MP-MPC
2018 International Conference on Control, Power, Communication and Computing Technologies (ICCPCCT), 2018
A car like robot, path tracking is a problem of practical importance in the field of robotics and... more A car like robot, path tracking is a problem of practical importance in the field of robotics and autonomous vehicles. The aim is to have a mobile robot follow a given reference path autonomously. The Model Predictive Controller (MPC) is a controller which anticipates control input depending on system current states. The Prediction and Control Horizon depends on the states of the system. So, for high speed applications more storage space of the computed states may arise, which intern results to large computational time of Model Predictive Controller. To resolve this problem an Explicit Model Predictive Controller is implemented. Solicitation of MPC regulators with short on-line computationalmandate and firm sampling by varying the affliction of optimization to the off-line controller design phase is guaranteed by Multi Parametric Model Predictive Control (MP-MPC).
Design of A Novel Controller to Stabilize the Dc Level of Photovoltaic System for Low Voltage Stand Alone Applications
Journal of Advanced Research in Dynamic and Control Systems, 2019
2018 International Conference on Control, Power, Communication and Computing Technologies (ICCPCCT), 2018
Photolytic degradation of fluoxetine (FLX), a medicine commonly known as Prozac ® , was evaluated... more Photolytic degradation of fluoxetine (FLX), a medicine commonly known as Prozac ® , was evaluated by using different photochemical processes. The ultraviolet/microwave (UV/MW) process showed higher efficiency in all the aspects evaluated in this study. The energy consumption was equivalent to 1.94 × 10 -4 kW h mg -1 L (UV/MW), while in the UV process the value was 1.20 × 10 -2 kW h mg -1 L. The degradation kinetics were applied to the FLX, with rate constant (k) = 0.15 ± 0.01 min -1 and linear correlation coefficient (R 2 ) = 0.980 for UV, and k = 6.15 ± 0.08 min -1 and R 2 = 0.998 for UV/MW. The FLX degradation of 99.16% (UV/MW 5 min) and 98.90% (UV 120 min) were observed, evidencing higher efficiency for the first process. The monitoring of transformation products (TPs) through chromatographic analysis enabled the identification of 9 TPs, proving that for the UV/MW process, the hydroxylated structures are verified in high quantity.
A New 2-Scroll Chaos Plant with Multistability and its Circuit Realization
2019 2nd International Conference on Intelligent Computing, Instrumentation and Control Technologies (ICICICT), 2019
A new 2-scroll chaos plant with multistability is reported in this work. Qualitative dynamical pr... more A new 2-scroll chaos plant with multistability is reported in this work. Qualitative dynamical properties of the new nonlinear plant are displayed with signal phase plots and bifurcation analysis. The new chaos dynamical plant has multistability and four saddle-type rest points, viz. a saddle rest point at the origin and three saddle-foci rest points. Also, a MultiSIM realization of the nonlinear plant with chaos oscillator with multistability is built for checking the real-world implementation of the chaos nonlinear plant with multistability.
The best possible and desirable solution of the engineering problems can be found using optimizat... more The best possible and desirable solution of the engineering problems can be found using optimization algorithms. The most widely used dc-dc converters are highly non-linear dynamical systems. Designing a control technique has been a most promising control area. One of the robust non-linear sliding mode controllers has been proved by researchers to be having large signal stability and providing good dynamic response. But the complicated design of the controller as well as the problems encountered during practical implementation gives rise to the necessity to design a controller which gives better performance than the former case and simple in structure and design. The traditional linear three mode PID (Proportional Integral Derivative) controllers which are the most common control algorithm in industries can be properly tuned so that they overcome the performance of the former case. The Bacterial Foraging Optimization Algorithm and Artificial Bee Colony Algorithm have been used for t...
Inverse Kinematics Solution of a Five Joint Robot Using NARX Algorithm
October December 2016 2677 JCPS Volume 9 Issue 4 Inverse Kinematics Solution of a Five Joint Robo... more October December 2016 2677 JCPS Volume 9 Issue 4 Inverse Kinematics Solution of a Five Joint Robot Using NARX Algorithm I. Jacob Raglend, M. Dev Anand, G. Glan Devadhas, D. M. Mary Synthia Regis Prabha Department of Electrical and Electronics Engineering, Noorul Islam Centre for Higher Education, Kumaracoil 629 180, Thuckalay, Kanyakumari District, Tamilnadu State, India Department of Mechanical Engineering, Noorul Islam Centre for Higher Education, Kumaracoil 629 180, Thuckalay, Kanyakumari District, Tamilnadu State, India Department of Electronics and Instrumentation Engineering, Vimal Jyothi Engineering College, Chemperi, Kannur, Kerala *Corresponding author: E-Mail: jacobraglend@rediffmail.com ABSTRACT One of the significant problem in robot kinematics is to optimising the solution of inverse kinematics which deals with obtaining the joint variables in terms of the end-effector position and orientation and is difficult than the forward kinematics problem. As the degree of freedo...
Biomedical Research-tokyo, 2017
In this paper, an efficient method for enhancement of blood vein on the forearm is devised with t... more In this paper, an efficient method for enhancement of blood vein on the forearm is devised with the help of contrast limited adaptive histogram equalisation (CLAHE) and Gabor filtering along other image processing techniques. The image captured in near-infrared region is converted into grey scale and made to undergo CLAHE twice to achieve an amplification limited contrast enhancement of all the objects in the image. Blood-vein textural features are enhanced using the efficient Gabor filtering method and the blood vein is extracted from the image using Otsu’s thresholding method. Erosion is performed for better accuracy of vein segments identified, and region of interest (ROI) is identified to increase the efficiency of the blood-vein detection.
Characterization of Hydrocarbons Generated from Electric Discharge Machining of Aluminum based Composite Material
Indian Journal of Science and Technology, 2016
Background/Objectives: Emissions of toxic substances are the major occupational and environmental... more Background/Objectives: Emissions of toxic substances are the major occupational and environmental problem associated with Electric Discharge Machining (EDM) process which is the highly extensively utilized nontraditional production process whereas these emissions could lead to unfavorable health issues to the operators and possess the straight forward impact towards the environment. Emissions of aerosols and gases are influenced by the temperature in the spark location which is a function of process parameters. This work aims at the characterization of hydrocarbons generated from the EDM process, in which kerosene is used as dielectric, for varying process parameters. Methods/Statistical Analysis: The experiment was designed using Taguchi L9 orthogonal array to study the influence of parameters of process on exposure. Die electrical level, Peak current Pulse Duration and flushing pressure were the parameters of process taken into account in this research. Findings: The breathing zone concentrations of emissions were sampled for gases and aerosols and these samples are analyzed for hydrocarbons using gas chromatography mass spectrometry analysis. The analysis results are compared with the exposure limit values or threshold limit values specified by the standard agencies and appropriate control measures were suggested.
This study deals with the design and analysis of a dc-dc converter operating in continuous conduc... more This study deals with the design and analysis of a dc-dc converter operating in continuous conduction mode with Proportional-Integral-Derivative control and PID based Sliding Mode Control (SMC). A small signal model is developed using Switching Flow Graph (SFG) from which the control coefficients for the PID controller is selected. PID based SMC uses a control law which constrains the weighted sum of the voltage error, its derivatives and the integral of the voltage error to zero. The equivalent control technique is used in its design which makes the converter more suitable for fixed frequency operation. Sensitivity of these controllers to supply voltage disturbances and load disturbances is studied and results are presented.
Invention of a suitable controller for a non linear Chemical process
2014 International Conference on Control, Instrumentation, Communication and Computational Technologies (ICCICCT), 2014
The nonlinearities form the obstacles to control the dynamic behavior of the neutralization proce... more The nonlinearities form the obstacles to control the dynamic behavior of the neutralization process. In this paper fuzzy logic controller is designed. The fuzzy control is developed for a pH neutralization. The controller was set up for a plant. The fuzzy controller can avoid linearity problems that occur in the neutralization process. Thus the efficiency is improved using this technique. This technique forms the optimized technique for overcoming all non-linearities that occur in PH neutralization. The proposed fuzzy logic controller outperforms the usual PID controllers.
Hybrid modulation based STATCOM with an external photovoltaic source
2014 International Conference on Control, Instrumentation, Communication and Computational Technologies (ICCICCT), 2014
This paper presents a hybrid modulation based multilevel static synchronous compensator (STATCOM)... more This paper presents a hybrid modulation based multilevel static synchronous compensator (STATCOM) voltage control method. A multilevel STATCOM is a combination of high voltage converter and low voltage converter with an energy source. STATCOM use either a battery or storage element as the energy bank. Most probably STATCOM consists of capacitors as reactive power supplying or reactive power absorbing element. During the operation of STATCOM, the capacitor voltage may vary from its value, there the importance of this work. A new control strategy is introduced in this paper in focus on the capacitor voltage. An experimental model is developed by using MATLAB SIMULINK block and the result shows that the STATCOM along with the new control technique perform satisfactorily.
Design and implementation of temperature controller for solar furnace
2014 International Conference on Control, Instrumentation, Communication and Computational Technologies (ICCICCT), 2014
This paper explores different control techniques to control the temperature of material samples i... more This paper explores different control techniques to control the temperature of material samples in a solar furnace. Solar furnaces provide the means to concentrate solar radiation on samples placed at their foci. The objective of the system is to control the temperature of the samples for testing purpose and the solar furnace are characterized to provide concentrated solar energy for testing applications. Control techniques including PI, PID, Fuzzy MPAC are implemented and simulation results demonstrate the effectiveness of each methodology.
Implementation of renewable resources for increased power demand in modern era
2014 International Conference on Control, Instrumentation, Communication and Computational Technologies (ICCICCT), 2014
The human activities contribute to the global warming of the planet. As a result, every country s... more The human activities contribute to the global warming of the planet. As a result, every country strives to reduce carbon emissions. The world is facing not only the depletion of fossil fuels, but also it's rising prices which cause the worldwide economic instability. By the nomenclature it is derived that the new demand for power has been compensated by the implementation of soalr electric and photovoltaic technology. This implant a helping hand for the upcoming needs for the economic growth of the nation and the speed growing power generation technology. The main intend is to create a new system which incorporates the working PV System to load and the power electronics and the methodology to track the solar path by introducing the MPP tracking. Because of that the efficiency can be increased further and thus can improve the utilization factor. Then main prominence is to be placed on the photovoltaic system, the modeling and simulation of photovoltaic array, the MPP control and the DC/DC converter. The Simulink model of the PV could be used in the future for extended study with different DC/DC converter topology. Optimization of MPPT algorithm can be implemented with the existing Photovoltaic and DC/DC converter.
A survey on detection of brain tumor from MRI brain images
2014 International Conference on Control, Instrumentation, Communication and Computational Technologies (ICCICCT), 2014
ABSTRACT
2012 International Conference on Computing, Electronics and Electrical Technologies (ICCEET), 2012
This work aims to develop an Artificial Neural Network based Model Reference Adaptive Control str... more This work aims to develop an Artificial Neural Network based Model Reference Adaptive Control strategy for an Industrial Process. The inherent advantage of the Neural Network to adapt in real time together with the effectiveness of Model Reference Adaptive control is utilized in the control of Industrial Chemical process.
An optimum setting of controller for a dc-dc converter using bacterial intelligence technique
ISGT2011-India, 2011
The most commonly used control algorithm in industry is the Proportional-Derivative-Integral (PID... more The most commonly used control algorithm in industry is the Proportional-Derivative-Integral (PID) control. The controller's performance is decided by the proper selection of the control parameters. In this paper, Bacterial Foraging Optimization Algorithm (BFOA) is applied for optimizing the controller's parameters of a dc-dc converter. The robustness of the BFOA tuned PID controlled DC-DC converter under load disturbances is studied.
American Journal of Applied Sciences, 2011
The aim of this study is to present an intelligent tuning technique for PID controller that are s... more The aim of this study is to present an intelligent tuning technique for PID controller that are simple and still result in good closed loop behavior. The idea is to start with a tuned conventional PID controller, replace it with an equivalent intelligent controllers like Fuzzy, ANN, Genetic and PSO techniques implies fine tuned nonlinear PID controller which is most suitable for nonlinear process like Continuous stirred tank reactor. The performance of various optimization techniques and intelligent techniques are compared. Approach: In this study we present soft computing techniques to design and tune the PID controller. The objective wss tominimise the steady state error and to obtain the optimum response. Results: The comparisons amoung the Conventional PID, Fuzzy Sliding PID, Simulated Anneling PID and PSO tuned PID controllers PSO PID implies better result for the nonlinear chemical process. Conclusion: With the nonlinear model of CSTR process the PSO tuned PID controller implies the optimum response for both setpoint and load variations.
Design of nonintrusive load meters with current and temperature calibration
2015 International Conference on Control, Instrumentation, Communication and Computational Technologies (ICCICCT), 2015
Nonintrusive load meters (NILMs) with a heap distinguishing proof capacity have been created in a... more Nonintrusive load meters (NILMs) with a heap distinguishing proof capacity have been created in a few foundations and organizations. All heap recognizable proof calculations (LIAs) have a typical trademark: load ID depends on the present waveforms. Framework alignment and tests of meter with burden recognizable proof capacity is displayed in this paper. The framework depended on producing discretionary current-waveform of already inspected own apparatuses. A tried N-I-L-M ought to quantify the waveform and distinguish the recreated apparatus. The heap recognizable proof likelihood was measures for a chose L-I-A. N-I-L-M was reenacted by a typical force quality-meter and load-ID were performs a while later in a PC. Reenactments and affectability examination were additionally performs to decide negligible property of a N-I-L-M with chose L-I-A. The outcomes demonstrated that the framework can gauge load ID likelihood of a NILM and even distinguish different issues of the L-I-A.
Recent Developments in Control of Car like Robot using MP-MPC
2018 International Conference on Control, Power, Communication and Computing Technologies (ICCPCCT), 2018
A car like robot, path tracking is a problem of practical importance in the field of robotics and... more A car like robot, path tracking is a problem of practical importance in the field of robotics and autonomous vehicles. The aim is to have a mobile robot follow a given reference path autonomously. The Model Predictive Controller (MPC) is a controller which anticipates control input depending on system current states. The Prediction and Control Horizon depends on the states of the system. So, for high speed applications more storage space of the computed states may arise, which intern results to large computational time of Model Predictive Controller. To resolve this problem an Explicit Model Predictive Controller is implemented. Solicitation of MPC regulators with short on-line computationalmandate and firm sampling by varying the affliction of optimization to the off-line controller design phase is guaranteed by Multi Parametric Model Predictive Control (MP-MPC).
Soft computation for conical tank level control
2017 International Conference on Intelligent Computing, Instrumentation and Control Technologies (ICICICT), 2017
The control of liquid level plays a crucial role in many process industries like food manufacturi... more The control of liquid level plays a crucial role in many process industries like food manufacturing, petroleum, etc. The nonlinearity due to the continually varying area of cross section of the liquid level makes the level control of the toughest task. The primary objective is to develop suitable controlling mechanisms to sustain the desired level of the system. In this paper, an Adaptive PID controller is designed and compared with conventional PID controller ie, designed using IMC based tuning method.
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Papers by Glan D E V A D H A S Devadhas