Qualification: 
M.Tech, B-Tech
Email: 
viveka@am.amrita.edu

Vivek A. currently serves as Assistant Professor at the Department of Electrical and Electronics Engineering at Amrita School of Engineering, Amritapuri. Vivek A. has completed  B.Tech. in  EEE from Amrita School of Engineering, Amritapuri in the year 2010 and  M. Tech. in Control Systems from College of Engineering, Trivandrum in the year 2012. He has been associated with Amrita Vishwa Vidyapeetham since August 2012. He is currently pursuing his PhD at the department of Electrical and Electronics Engineering, Amrita Vishwa Vidyapeetham, Amritapuri.

Vivek A. has  delivered an invited talk at Cape Karunagapally on “Control of UAVs.” 

He is a member of ISTE and IEEE.

Publications

Publication Type: Journal Article

Year of Publication Publication Type Title

2016

Journal Article

A. B. Sa, A. Vivek, and L, N. J., “Simulation and Analysis of Integral LQR Controller for Inner Control Loop Design of a Fixed Wing Micro Aerial Vehicle (MAV)”, Global Colloquium in Recent Advancement and Effectual Researches in Engineering, Science and Technology (RAEREST 2016) , vol. 25, pp. 76–83, 2016.[Abstract]


The focus of this paper is on the autopilot control loop design of fixed wing Micro Aerial Vehicles (MAVs).The control methodologies used to design the lateral and longitudinal control are based on Proportional Integral Derivative (PID) and Linear Quadratic Regulator (LQR) with integral action control techniques. The design of these controllers is based on the assumption that the system dynamics can be decoupled to longitudinal and lateral dynamics. A nominal model is chosen among many linear models linearized under various operating conditions. The resulting controllers are simulated in MATLAB® SIMULINK® workspace and results are studied. The simulation results show that both the controllers gives satisfactory performances with or without disturbances, but the LQR controller provides better disturbance rejection and exhibits better overall performance. More »»

2016

Journal Article

A. Vivek and Haridas, V., “Longitudinal Guidance of Unmanned Aerial Vehicle Using Integral Sliding Mode Control”, Global Colloquium in Recent Advancement and Effectual Researches in Engineering, Science and Technology (RAEREST 2016) , vol. 25, pp. 36–43, 2016.[Abstract]


This paper proposes a nonlinear scheme for guidance and longitudinal control of Unmanned Aerial Vehicle(UAV). The main objective of the guidance algorithm is to minimize the errors in altitude and flight path angle of the vehicle during flight. The guidance scheme must perform well in the case of small as well as large longitudinal errors, without saturating the pitch angle of the vehicle, which act as the control input. Integral Sliding Mode Control(ISMC) is used in longitudinal control of UAV. It is an improved sliding control method. Initially a linear sliding surface is employed for longitudinal guidance but it cannot provide satisfactory performance for both large and small errors in altitude and flight path angle and hence a nonlinear sliding surface is proposed. The simulations are carried out in MATLAB®/SIMULINK®.The simulation results show the effectiveness and robustness of the proposed control scheme. More »»

Publication Type: Conference Paper

Year of Publication Publication Type Title

2015

Conference Paper

S. Parvathy, A. Vivek, and G. Manjula, N., “Voltage Compensation using Dynamic Voltage Restorer during Fault conditions”, in International Conference on Recent Innovations in Engineering and Technology, Travancore College of Engineering, 2015.

2015

Conference Paper

S. Parvathy and A. Vivek, “A photovoltaic water pumping system with high efficiency and high lifetime”, in Advancements in Power and Energy (TAP Energy), 2015 International Conference on, Kollam, India, 2015.[Abstract]


A highly efficient, low cost photovoltaic water pumping system integrating a push-pull converter and a three-phase voltage source inverter using a single photovoltaic panel is proposed which has got high life time due to the absence of batteries. The converter steps up the panel voltage and the inverter powers the AC motors for varying speed conditions and it uses a sinusoidal pulse width modulation (SPWM) strategy with 1/6 optimal third harmonic injection. Maximum Power Point Tracking (MPPT) strategy forces the PV to extract the maximum power at the given irradiance level. The voltage reference obtained from this is used in a PI controller to adjust the motor speed. Thus the proposed pumping system works on varying power input and gives varying water output at a given pump head and can be used in isolated locations to deliver water.

More »»

2014

Conference Paper

V. Vijayakumar, R. Divya, and A. Vivek, “Sliding mode controlled quadratic boost converter”, in International Conference on Computation of Power, Energy, Information and Communication (ICCPEIC), 2014 , Chennai, 2014.[Abstract]


This paper deals with a quadratic boost converter which belongs to cascade boost family, controlled by sliding mode controller. In the cascade boost family, quadratic boost converter is the best trade-off when circuit complexity and modulator saturation is considered. Sliding mode control being a nonlinear control results in a robust and stable system when applied to switching converters which are inherently variable structured systems. The stability of this system is analysed through Lyapunov's approach. Analysis is done for load regulation, line regulation and step response of the system on Simulink model. Also these results are compared with that of PID controller based system.

More »»

2014

Conference Paper

P. Neethu S. and A. Vivek, “Hysteretic PWM Controlled High Gain Quadratic Boost Converter”, in International Conference On Computation Of Power, Energy, Information And Communication (ICCPEIC), 2014.

2014

Conference Paper

M. Seena, Sreejith, K., and A. Vivek, “Novel Soft Switched Boost Converter for Standalone PV Systems”, in International Conference On Computation Of Power, Energy, Information And Communication (ICCPEIC), 2014.

2012

Conference Paper

A. Vivek, S., U., and Sheelu, J., “Chattering Free Sliding Mode Control for Re Usable Launch Vehicle”, in 13th National Conference on Technological Trends in College Of Engineering Trivandrum, 2012.

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