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Design and Analysis of Lower Limb Exoskeleton
N. Siva Nagamani ; V. Mohan Srikanth; D. Tarun
Mechanical Engineering
Year: 2017, Volume:3, Issue : 12
Pages: 61 - 67
Lower Body Exoskeleton is nothing but chairless chair used in Industries. The people who are working in Industry can wear it on legs like Exoskeleton. It is a mechanical ergonomics device that is designed according to the shape and function of the human body. It is not a chair but it acts like a chair. The concept of this chairless chair is when it activates you can walk. And then if it is inactive, it locks into place from an angle of 900, 1200 and 1500 and you can sit down on it. It is mainly used for industrial workers, standing for a long period of time leads to discomfort and reduce productivity. So Design and Analysis is an important parameter to know the forces induced in each element and actuators.
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Thermal Analysis of Disc Brake
Sumeet Satope ; Mr. Akshaykumar Bote; Prof. Swapneel D. Rawool
AUTOMOBILE ENGINEERING
Year: 2017, Volume:3, Issue : 12
Pages: 68 - 73
Each single system of automotive along with brake system has come a long way in past years. In two wheeler brake system the material used for disc brake mostly is, alloy martensitic stainless steel and sometimes in high end bikes is carbon – carbon composite and grey cast iron. But when brakes is subjected to structural and wear issues it is important to study analytical calculation in order to obtain temperature, heat flux, heat generated etc. with the help of which optimum material is selected as per the requirement of vehicle system. The steady state thermal analysis of two wheeler disc rotor aimed towards the evaluating the braking performance of two wheeler disc brake under braking condition. In this paper mathematical inputs, and thermal loads of brake rotor, calculations of different parameters required for thermal analysis is done by taking suitable assumptions. The design of brake rotor is done on solid works 15 and analysis is done with the help of ansys 14.5.
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Power Quality Improvement in Microgrids using Predictive Technique Based Static Compensator
Prajith Prabhakar ; Dr. H Vennila
Electrical Engineering
Year: 2017, Volume:3, Issue : 12
Pages: 74 - 83
Power quality may be caused when maximum AC loads consumes reactive power. Distribution STATCOM is a custom power device (CPD) which is used to control the flow of reactive power in the Microgrid. Compensation of reactive power and the other power quality issues are being analyzed with the help of Model Predictive control (MPC) algorithm. The detailed modeling and simulations of MPC with DSTATCOM are presented and implemented along with necessary equations in the MATLAB simulink using the simpower systems tool boxes.
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Motor Protection and Control Unit by Wireless Media
Sameeksha S. Neve ; Pooja A. Bhosale; Urmila K. Koktare; Prof. Kirti A. Adoni
Electronics and Telecommunication
Year: 2017, Volume:3, Issue : 12
Pages: 84 - 88
Three phase motor is part of many applications. These motors are widely used in industrial and agriculture area. Traditionally these are either controlled by user manually where protections are mostly not taken care or may be done using isolated unit. In industry, induction motors are used in hazardous area where human presence might be risky. “Motor protection and control unit by wireless media†unit don’t require any special consideration while operating. Once user gives Command/instructions, by android application via Wi-Fi then unit automatically turns motor ON/OFF. This unit will have great application for industrial motor interface where maintenance operators need frequent access for motor status and control. Also the majority of Indian population is engaged in agriculture and lives in villages. The key issues faced by an average farmer with irrigation water pumps is water wastage, travelling long distances through difficult terrains just to operate the pumps, encountering snakes and other dangers creatures en-route erratic power supply, motor/starter damage and fuel. Thus, the Motor protection and control unit by wireless media provides a solution for these problems. New Wi-Fi technologies are coming with wider coverage, which can be used for agriculture application.
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Platform Safety Mechanism for Train Passengers at Stations
Yebin Abraham Yesudas ; Siddique Nazzar; Sooraj K Raveendran; Vishal C; Francis Augustine Joseph
Mechanical Engineering
Year: 2017, Volume:3, Issue : 12
Pages: 89 - 93
The project aims to prevent accidents that occur due to the gap between platforms and trains and lose of valuable things into the gaps. Accidents have been reported at railway stations, as passengers fall under the train through the gap between train and platform. Most of the accidents occurs due to over crowd, rush and carelessness of the passengers and when the passengers try to board the moving train. The project helps to overcome these problems. Sider steps are attached to all the doors of each bogy of the train. It will be deployed automatically as the train reaches the station. The sider step will cover the gap between the train and platform as there are chances for people to be trapped between the steps of the train and platform. The slider step slides forward and backward with the help of a gear motor. The complete system is automated. The system works with the help of two sensors: Ultrasonic sensor – To detect the presence of platform and Magnetic Reader Switch – To find out the rpm of the wheel. There is a micro controller, which controls the gear motor. The signals from both the sensors will be given to the micro controller. The micro controller first checks the presence of platform and then the rpm of wheel, if both the signals are right then only the slider step will be deployed.
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XAFS Study of Copper (II) Complexes of p-Anisidine
Jaishree Bhale ; Pradeep Sharma; A. Mishra
Physics
Year: 2017, Volume:3, Issue : 12
Pages: 94 - 101
X-ray K-absorption spectroscopic studies have been carried out on three copper (II) mixed-ligand complexes .The complexes are [Cu(L6)2(H2O)2(Cl)](0.2)H2O, [Cu(L6)2(H2O)2(SO4)](0.2)H2O and [Cu(L6)2(H2O)2(Br)](0.2)H2O where ligand L6= (p-methoxy anilino) –P– chloro phenyl acetonitrile. XAFS spectra have been recorded at the K-edge of Cu using the dispersive beam line at 2.5GeV Indus-2 synchrotron radiation source RRCAT(Raja Ramanna Center for Advance Technology ), Indore, India. The data obtained has been processed using XAFS data analysis program Athena and the computer software Origin 6.0 professional. Various X-ray absorption parameters e.g., chemical shift, edge-width and shift of the principal absorption maximum have been obtained in the present study. The chemical shift data have been utilized to estimate effective nuclear charge on the absorbing atom. Further the observed chemical shifts have been correlated with percentage covalency in these complexes. The studies establish significant correlation between various parameters for these complexes. The XAFS data obtained has also been used to determine the bond length by using four different methods, i.e., Levy’s, Lytle, Lytle, Sayers and Stern’s (LSS) and Fourier transformation methods. The results of the study have been reported in this paper.
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Extended Fine Structure of the X-ray K-Absorption Discontinuity in Some Copper(II) Mixed Ligand Complexes of Benzaldehyde
Jaishree Bhale ; Pradeep Sharma; A. Mishra
Physics
Year: 2017, Volume:3, Issue : 12
Pages: 102 - 106
Cu K-edge extended X-ray absorption fine structure(EXAFS) spectra have been obtained for four copper (II) mixed ligand complexes using BL-8 Dispersive Extended X-ray Absorption Fine Structure (EXAFS) beamline at the 2.5-GeV INDUS-2 Synchrotron Source, RRCAT(Raja Ramanna Center for Advance Technology),Indore, India. The complexes are [Cu(ben)(p-Tol)(Cl)2], [Cu(ben)(p-Tol)(CH3COO)2], [Cu(ben)(p-Tol)(NO3)2] and [Cu(ben)(p-Tol)(Br)2]. The ligand (p-methyl anilino) phenyl acetonitrile was prepared which included the reaction of benzaldehyde with P-toluidine. The data obtained has been processed using EXAFS data analysis program Athena and the computer software Origin 6.0 professional. EXAFS maxima and minima positions have been obtained from the normalized spectra. The normalized EXAFS spectra have been Fourier transformed. The position of the first peak in the Fourier transform gives the value of first shell bond length .This distance is the phase-uncorrected bond length and has also been determined by Lytle, Sayers and Stern s (LSS) graphical method. It is found that the results obtained from LSS and the Fourier transformation methods are in good agreement with each other, i.e. both the LSS method and Fourier transformation method give nearly the same value of the phase-uncorrected bond lengths. In this paper, the first shell bond length has also been estimated by Lytle’s and Levy’s methods from the EXAFS data.
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Design and Simulation of Speed Control of DC Motor using Chopper
Hitesh Rakholiya ; Montu Patel; Nirbhaysinh Raulji; Rushabh Rana; Krunal Shah
Electrical Engineering
Year: 2017, Volume:3, Issue : 12
Pages: 107 - 114
This projects deals with the speed control of separately excited DC motor with a high performance manner. There are four different quadrants operation of DC motor implement .In this project using chopper as a converter, the speed of a DC motor is to be controlled. We simulate the operation of DC motor in open loop as well as closed loop. As speed control is desired in order to get accurate performance of DC motor, the simulation of model will be done and analyzed in MATLAB under varying condition. A closed loop system brings the motor to the speed set by the user irrespective of load.
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Design of 12 Sided Polygon Patch Microstrip Antenna for 2.4 GHz
Pradnya A. Kamat ; Samiksha S. Mandurkar; Lavesh N. Velip; Yeshudas Muttu
Telecommunication Engineering
Year: 2017, Volume:3, Issue : 12
Pages: 115 - 118
An antenna plays a major role in the field of communication engineering. In this paper we have designed a 12 sided polygon shaped patch Microstrip antenna and simulation has been done using IE3D simulator software version 14.0. The designed antenna has following dimentions: 32.5mm×39mm (Ground plane), 26mm×26mm (patch), and substrate thickness of 1.6mm and FR4 material is used as dielectric having relative permittivity of 4.2 and loss tangent of 0.0013 at a frequency of 2.4GHz. The different parameters of the designed antenna such as VSWR, return loss, gain, efficiency, axial ratio etc. have been studied.
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Design and Analysis of Microstrip patch Antenna and Comparison between the Arrays
Deeksha Anand Naik ; Priyanka Kiran Padiyar; Vishakha Namdev Virnodkar; Yeshudas Muttu; Mohini Naik
Electronics and Telecommunication
Year: 2017, Volume:3, Issue : 12
Pages: 119 - 124
This paper demonstrates low cost and high gain microstrip array antennas with suitable feeding technique and suitable diectric substrate for applications in the Giga Hertz frequency range. The objective of this paper is to design a microstrip patch array antenna using IE3D software for improvement of antenna radiation parameters like gain, directivity etc. We have analyzed a single rectangular patch antenna along with the 2 x 1, 4 x 1, 8 x 1 array for parameters such as gain, directivity efficiency and bandwidth. Simulations will be performed on Zeland software.
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Abstract
