Papers by sharmila petkar
Genatically optimized approximants using dominant pole retention method
Proceedings of the International Conference and Workshop on Emerging Trends in Technology, 2010
Abstract A mixed method of model order reduction for linear SISO system with real distinct poles ... more Abstract A mixed method of model order reduction for linear SISO system with real distinct poles is proposed in this paper. The denominator of the reduced model is selected by retaining dominant poles. An error function is constructed between time moments and ...
Dry and Wet Cough Detection using Fusion of Cepstral base Statistical Features
2022 International Conference on Decision Aid Sciences and Applications (DASA)
トポタクティックフッ素ドープによるsr 2 Iro 4 X F y 薄膜の作製
応用物理学会秋季学術講演会講演予稿集(CD-ROM), 2018
International Journal for Research in Applied Science and Engineering Technology, 2021
World Health Organization states that health is "a state of complete physical, mental and social ... more World Health Organization states that health is "a state of complete physical, mental and social wellbeing and not merely the absence of disease or infirmity." Better health is central to human happiness and well-being. Determining the disease at very first is one of the challenging tasks for most of the people. In this project, we will develop a system which will predict the possible diseases according to the symptoms feed by the user i.e. the user will give the symptoms as an input to the system and as a result system will predict the disease and give it as an output. The aim is to develop the prediction system which predict the disease with help of machine learning algorithm i.e. Back Propagation Neural Network.

IEEE Transactions on Plasma Science, 2016
The objective of this paper is to report findings based on the particle-in-cell (PIC) modeling of... more The objective of this paper is to report findings based on the particle-in-cell (PIC) modeling of the axial and coaxial virtual cathode oscillators in order to validate the experiments already performed on these devices over the years. In addition to this, observations regarding validation and similarities between the simulations and the experiments have been reported, with an emphasis on analysis of device parameters such as ebeam voltage, current density, and microwave power. Theoretical aspects of a virtual cathode oscillator (vircator) and some of the key experimental works have been revisited. Investigation is done on the power generated in a coaxial vircator, and various cavity modifications have been tested for the coaxial vircator using the MAGIC3D, PIC tools suite, in order to search for improvement in the device efficiencies. Also, the axial vircator has been modeled to comment on the particle energies, device design, and beam quality associated with it.

Robust tube based MPC for PVTOL trajectory tracking using systems flatness property
2016 International Conference on Unmanned Aircraft Systems (ICUAS), 2016
The paper presents a tube based Model Predictive Control (MPC) strategy for robust tracking contr... more The paper presents a tube based Model Predictive Control (MPC) strategy for robust tracking control of PVTOL aircraft. PVTOL system is considered as a benchmark for investigating dynamics and control related issues for unmanned aerial vehicles (UAVs). Due to non-linear dynamics and under actuated nature of this system, the task of building control algorithm for such systems becomes challenging. Here, the systems flatness property is used to obtain the dynamics in terms of flat outputs. The linear form of the obtained dynamics facilitates the computation of error invariant set using LMI's. Also, by an LMI based optimisation approach the problem of maximisation of terminal region of MPC is solved. This Quasiinfinite horizon strategy for MPC guarantees the stability of system. The complete process reduces the computation cost for MPC and makes the system robust against large additive disturbances. The effectiveness of the proposed control strategy is shown via simulations by tracking a given trajectory while rejecting the effects of disturbances.

Robust Model Predictive Control of PVTOL Aircraft∗∗This work was supported by Center of Excellence in Complex and Nonlinear Dynamical Systems (CoE-CNDS), established under TEQIP-II, Subcomponent 1.2.1
IFAC-PapersOnLine, 2016
Abstract The paper presents a Tube Based Model Predictive Control (TB-MPC) strategy for robust st... more Abstract The paper presents a Tube Based Model Predictive Control (TB-MPC) strategy for robust stabilization of Planar Vertical Take-off and Landing (PVTOL) aircraft. PVTOL system is considered as a benchmark for investigating dynamics and control related issues for unmanned aerial vehicles (UAVs). Control problem of such a system is challenging due to its nonlinear dynamics and under actuated nature. Moreover, a major problem with these systems is the loss of controllability at certain points in the state space. To overcome these issues a unique approach has been used to approximate the nonlinear dynamics of the PVTOL system under additive disturbance with a set of linear systems to form polytopic linear differential inclusion (PLDI). Obtained approximation always satisfies the controllability condition. The proof of stability and feasibility for MPC has been derived. The effectiveness of the proposed control strategy is shown via simulations by stabilizing the aircraft, while rejecting the effects of disturbances.

Modelling of a High Power Microwave (HPM) Source using 300 KV Marx Generator and Horn Type Antenna
Indian journal of science and technology, 2017
Objectives: To analyse a High Power Microwave (HPM) source connected to a horn antenna by a mathe... more Objectives: To analyse a High Power Microwave (HPM) source connected to a horn antenna by a mathematical model and feeding it with various pulse shapes to find its response. To estimate the E far-field produced and compare it with experimental measurements. Methods/Statistical analysis: A HPM source is built using spark gap switch and Marx generator. Efforts are made to reduce the rise time of the radiated pulse by experimentally varying the spark gap distance and using different gases as di-electric medium. A peaking switch was then designed that could achieve a rise time of 1 nS. The energy discharged at the spark gap (peaking switch) is radiated using a horn type antenna. Findings: In the numerous simulations it was found that a sharp rising edge of the radiated pulse can be achieved if we could minimize the peaking stage inductance. A sharp rising edge gives high peak radiated power resulting in higher E far-field intensity, which is useful for the intended applications of HPM s...

ITM Web of Conferences, 2020
In this paper, we are going to present an implementation of SLAM. This SLAM technology is used fo... more In this paper, we are going to present an implementation of SLAM. This SLAM technology is used for creating a map of an unknown environment by placing a robot. Robot will be interfaced and controlled using Robot Operating System (ROS). We are aiming to create a map of a region where disaster has taken place. It can be used to create a map of the regions where humans cannot reach. In the disaster prone areas it is not possible for humans to check the location of survivors. Our robot will help to amplify low human noise to detect presence of humans under the rubble and to detect them using sensors and then we can mark that location so that rescue team would quickly reach to that location for their rescue, also simultaneous live feed/streaming using normal camera to monitor the area. Here main part is odometry of robot. To calculate odometry, camera and encoders are used. So, SLAM based robots can help in mapping their locations digitally.
Fault simulator of car engine
2019 IEEE Bombay Section Signature Conference (IBSSC), 2019
Fault simulator of a car engine is a E-training system developed to guide the beginners about var... more Fault simulator of a car engine is a E-training system developed to guide the beginners about various faults of an engine. There are parameters called engine faults such as, Dirty oil, poor compression, coolant loss, poor lubrication, clogged radiator, Spark knock and worn spark plug. Any system when comes to existence has some faults and limitations. Hence, to understand these faults and how to diagnose them this fault simulator is developed using LabVIEW which have following different panels: The Main panel, About faults panel, Normal conditions panel, Guide panels, Fault simulator panel and Trainer kit panel. A trainer kit is made using virtual instruments such as switches and indicators in LabVIEW which will guide user to follow the required sequence of events to be performed.
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Papers by sharmila petkar