Solar Powered Optimal Battery Charging Scheme For Moving Robotic Vehicle

This paper focuses on the design and development of an optimization charging system for Li–Po batteries with the help of solar tracking panels. Therefore, the implementation of a complete energy management system applied to a robotic vehicle. The proposed system is to design Moving robotic Vehicle. The design concept, based on a microcontroller. On this basis, our proposal makes a dual signi?cant contribution. First upon, it presents the construction of a solar tracking mechanism aimed at increasing the robots power regardless of its mobility. Secondly, it proposes an alternative design of power system performance based on a pack of two batteries. The aim is completing the process of charging a battery independently while the other battery provides all the energy consumed by the robotic vehicle. DOI: 10.17762/ijritcc2321-8169.160414

Design of Experiments Applied to Industrial Process

Response optimization and exploration are the challenging task in front of experimenter. The cause and effect of input variables on the responses can be found out after doing experiments in proper sequence. Generally relationship between response of interest y and predictor variables x1, x2, x3, … xk is formed after carefully designing of experimentation. For examples y might be biodiesel production from crude ‘Mahua’ and x1, x2 and x3 might be reaction temperature, reaction time and the catalyst feed rate in the process. In the present book chapter, design of experiment is discussed based on predictor variables for conducting experiments with the aim of building relationship between response and variables. Subsequently a case study is also discussed for demonstration of design of experiments for predicting surface roughness in the machining of titanium alloys based on response surface methodology

Design and Fabrication of an Electrically Small Meander Line MIMO Antenna System for Wireless Communication Applications

A multiple-input multiple-output (MIMO) technique has been considered one of the most promising technologies to enhance the performance of wireless communication systems with high-speed transmission rates. A MIMO system utilizing several antenna components is more advantageous than a single-input single-output (SISO) system in terms of increasing channel capacity and reducing transmitting power. Conventional universal serial bus (USB) dongles are attractive for providing plug and- play functionality in mobile communication devices such as laptops. Future wireless USB dongles should be capable of accommodating higher data rates than the current systems owing to the advent of various multimedia services. Up to date, most MIMO antenna systems with more than two antennas are three-dimensional rather than planar. However, the basic problem with the MIMO systems is the requirement of electrically small antennas which usually have several constraints. Hence, these antennas are considered in our project work. In this work the design, optimization, fabrication & testing of electrically small antennas suitable for MIMO (multiple input multiple output) applications are presented. When the transceiver uses more than one antenna, the antennas must be placed at least half of the carrier wavelength apart, in order to transmit/receive uncorrelated signals. We propose an electrically small antenna (ESA) that is based on the meander line antenna structure that operates in the 2.4-2.7 GHz ISM band. The proposed antenna has measured center frequency of 2.50 GHz with 240 MHz bandwidth and total size of antenna is 14.5X26.6 mm. In addition, we present the design of a compact dual element MIMO antenna system for a USB dongle operating in the 2.5-2.7 GHz frequency band. Thedesigned MIMO antenna has the compact size of 26.0 mm×32.0 mm, more than 200 MHz bandwidth.Both simulation and experiment results from the fabricated antennas are presented

CHARACTERIZATION OF HEAT TRANSFER AND PRESSURE DROP OF NORMAL FLOW HEAT EXCHANGERS IN COUNTER FLOW CONFIGURATION

In today's times, successful technology advancement lies in making systems that are highly compact, offer superior energy efficiency, while sustainable and cost effective . There is interest in developing small heat exchangers having better flow distribution control rather than bulky heat exchangers which are energy intensive. Microchannels and microreactors controlled by microprocessors are slowly taking over energy conversion, transportation and process industry. The nature inspired - Fractal arrangement of manifold-microchannels has the potential to provide enormous heat transfer capabilities at an attractive coefficient of performance. However majority of such fractal flow manifolds are very short and operate with short counterpart microchannel. They have not been completely adopted for counter flow configuration required by majority of the industrial processes. The work covered under this thesis is focused on adopting of high performance fractal microchannel arrangement to counter flow configuration heat exchangers that are required by industrial processes. Two single phase solution heat exchangers were developed using this approach. The solution heat exchanger is an essential component in absorption refrigeration cycle to convert waste heat into cooling. The study also utilized the novel additive manufacturing process of 3D printing to develop a tubular manifold in order to promote the fractal normal flow on tubular surfaces. The heat exchangers developed as a part of this thesis show enhancement in the overall performance and demonstrate high potential of the proposed technology

CD44 modulates Smad1 activation in the BMP-7 signaling pathway

Bone morphogenetic protein 7 (BMP-7) regulates cellular metabolism in embryonic and adult tissues. Signal transduction occurs through the activation of intracellular Smad proteins. In this paper, using a yeast two-hybrid screen, Smad1 was found to interact with the cytoplasmic domain of CD44, a receptor for the extracellular matrix macromolecule hyaluronan. Coimmunoprecipitation experiments confirmed the interaction of Smad1 with full-length CD44—interactions that did not occur when CD44 receptors truncated within the cytoplasmic domain were tested. Chondrocytes overexpressing a truncated CD44 on a background of endogenous full-length CD44 no longer exhibited Smad1 nuclear translocation upon BMP-7 stimulation. Further, pretreatment of chondrocytes with Streptomyces hyaluronidase to disrupt extracellular hyaluronan–cell interactions inhibited BMP-7–mediated Smad1 phosphorylation, nuclear translocation of Smad1 or Smad4, and SBE4–luciferase reporter activation. These results support a functional link between the BMP signaling cascade and CD44. Thus, changes in hyaluronan–cell interactions may serve as a means to modulate cellular responsiveness to BMP

DESIGN AND ANALYSIS OF SLOT LOADED RECTANGULAR PATCH ANTENNA FOR WIRELESS COMMUNICATION SYSTEM

A multiple-input multiple-output (MIMO) technique has been considered one of the most promising technologies to enhance the performance of wireless communication systems with high-speed transmission rates. A MIMO system utilizing several antenna components is more advantageous than a single-input single-output (SISO) system in terms of increasing channel capacity and reducing transmitting power. Conventional universal serial bus (USB) dongles are attractive for providing plug and- play functionality in mobile communication devices such as laptops. Future wireless USB dongles should be capable of accommodating higher data rates than the current systems owing to the advent of various multimedia services. Up to date, most MIMO antenna systems with more than two antennas are three-dimensional rather than planar. However, the basic problem with the MIMO systems is the requirement of electrically small antennas which usually have several constraints. Hence, these antennas are considered in our project work

Experimental Results on the Use of High Frequency Resonance Technique for Tapered Roller Bearing Diagnostics

This paper presents results of experiments per-formed towards diagnosis of localized defects in tapered roller bearings, using High Frequency Resonance Technique (HFRT). A special feature of the work is that instead of using analog filter and envelope detector for HFRT, digital filtering and envelope detection were used. To practically test this technique, an experimental setup was designed and fabricated for testing various tapered roller bearings to obtain their vibration characteristics. For the purpose of testing, a few defect-free and defective tapered roller bearings were tested using the fabricated set up-the defective bearings tested included bearings with outer race defects, roller defects and combination of both. Based on the above experiments it has been shown that HFRT is an objective technique and thus useful to diagnose point defects in tapered roller bearings. In addition, due its digital implementation, the HFRT demonstrated in this paper is cheaper than its analog counterpart

Design And Analysis Of Slot Loaded Rectangular Patch Antenna For Wireless Communication System

A multiple-input multiple-output (MIMO) technique has been considered one of the most promising technologies to enhance the performance of wireless communication systems with high-speed transmission rates. A MIMO system utilizing several antenna components is more advantageous than a single-input single-output (SISO) system in terms of increasing channel capacity and reducing transmitting power. Conventional universal serial bus (USB) dongles are attractive for providing plug and- play functionality in mobile communication devices such as laptops. Future wireless USB dongles should be capable of accommodating higher data rates than the current systems owing to the advent of various multimedia services. Up to date, most MIMO antenna systems with more than two antennas are three-dimensional rather than planar. However, the basic problem with the MIMO systems is the requirement of electrically small antennas which usually have several constraints. Hence, these antennas are considered in our project work