Autonomous Material Refill For Swarm 3d Printing,
2022
University of Arkansas, Fayetteville
Autonomous Material Refill For Swarm 3d Printing, William C. Jones
Mechanical Engineering Undergraduate Honors Theses
3D printing currently offers robust and cheap rapid prototyping solutions. While standard 3D printing remains at the periphery of mass production, the technology serves as a starting point for the development of swarm manufacturing. Since swarm manufacturing is predicated upon autonomy, swarm technology companies such as AMBOTS are seeking to minimize human involvement in the swarm’s functions. At present, the 3D printing swarm consists of the printers, a transporter which can take them between job sites, and the floor tiles which provide power and support the build surfaces. To add to this ecosystem, this project is focused on the design …
Cal Poly Fluid Power Vehicle Challenge 2022,
2022
California Polytechnic State University, San Luis Obispo
Cal Poly Fluid Power Vehicle Challenge 2022, Sangmin Sung, Eddy Rodriguez, Travis Welch, Jeremy Baechler, Kevin Pauls
Mechanical Engineering
In this report, the Featherweight Cycles design team puts forth the scope and overview of their design project, discusses background research and competitor analysis, and presents the project’s final design and manufacturing plans. The overall goal of this project is to fabricate and compete in the Fluid Power Vehicle Challenge, hosted by the National Fluid Power Association. To better define the design process, the team researched previous year’s designs from Cal Poly, as well as winning designs from the last two years to form a baseline of knowledge about competing schools’ designs. After researching multiple design paths, Featherweight Cycles chose …
Autonomous Navigator Mobile Robot Upgrade,
2022
University of Southern Maine
Autonomous Navigator Mobile Robot Upgrade, David Sansoucy
Thinking Matters Symposium
The mobile robot platform has been developed over the course of 10 years at USM. In Spring 2020, Belle-Isle and Werner updated the previous framework by rewriting the software to use the ROS framework running on an on-board Raspberry Pi 3. They also implemented navigation using an A* motion planning algorithm and image processing. In Summer 2021, Ames incorporated Lidar and Kinect sensors onto the robot to improve its real-time navigation capabilities. He also made improvements to the power distribution systems. This project aimed to build on the ROS frameworks developed by the previous 2 teams with the main goal …
Ads-B Aircraft Photography,
2022
University of Alabama in Huntsville
Ads-B Aircraft Photography, Gabriel Michael Adamson, Wesley Crouch, Jacob Elmore
Honors Capstone Projects and Theses
No abstract provided.
Ee Senior Design Project: Applications Of Wifi- Enabled Embedded Systems In Residential Security,
2022
University of Alabama in Huntsville
Ee Senior Design Project: Applications Of Wifi- Enabled Embedded Systems In Residential Security, Mariah Flint, Blake Kelly
Honors Capstone Projects and Theses
No abstract provided.
Development Of A Compliant Gripper Driven By 3 Dof Soft Robot,
2022
Kennesaw State University
Development Of A Compliant Gripper Driven By 3 Dof Soft Robot, Derek M. Price Ii, Ricardo Ramirez, Pt Angel Tran
Symposium of Student Scholars
Industrial robots are moving toward automation, which makes it increasingly necessary to replace the functions traditionally performed by humans with robotics. Pick and place operation is a prime example of such automation. Robots that pick up and place objects mimic the human action of picking an object up and placing it in a targeted location. It has led to the development of robotic end-effectors that have a human-like feel. Grippers can be articulated in various ways depending on their application area and well-defined desired tasks. As compliant and soft links deflect more under the same load than their rigid body …
Zero-Power Ac Current Sensor,
2022
University of New Mexico
Zero-Power Ac Current Sensor, Omar Aragonez
Mechanical Engineering ETDs
In this study, a magnetic piezoelectric cantilever powered AC current and frequency sensor is proposed. This paper covers the configuration of the experimental setup, finite element modeling of the magnetic coupling, and the optimal spatial location of the magnetic proof mass in relation to the wire for smart grid applications. Solid and stranded copper wires of various gauges were used and carried current up to 30A. The magnets act as a proof mass to lower the frequency while also coupling to the magnetic field generated by the current carrying wire. The frequency of the AC current produces a sinusoidal force …
Development Of Controller Area Network Bus Programming For Quarter-Scale Tractor Pulling Sled,
2022
University of Nebraska - Lincoln
Development Of Controller Area Network Bus Programming For Quarter-Scale Tractor Pulling Sled, Brittani Wacker
Honors Program: Senior Projects (Public)
Usage of Controller Area Network (CAN) technology has allowed for advancements in many industries, including agriculture. Most importantly, its application is useful for refining data acquisition methods. With support from the Quarter-scale Tractor Design Team at UNL, this project united a CAN bus with the team’s current tractor pulling sled. The objectives were to install new instrumentation needed for the CAN bus and to program the updated system utilizing CAN data. The program needed to give the pulling sled functionality and the ability to read and log important pulling data. These goals were all accomplished by implementing new sensors, coding …
Development Of A Prototype Ball-And-Plate Balancing Platform,
2022
California Polytechnic State University, San Luis Obispo
Development Of A Prototype Ball-And-Plate Balancing Platform, Scott J. Mangin
Master's Theses
Ball-and-plate balancing platforms have been utilized throughout academia to further understanding of nonlinearities that can occur when applying control algorithms to nonholonomic and underactuated systems. The objective of this thesis is to build upon an existing ball-and-plate balancing platform used in the Intro to Mechatronics class and create a robust platform system that can be utilized by future students to test various controller designs derived from MATLAB/Simulink®. The ball-and-plate platform design uses a myriad of sensors to track the system components in real time: a resistive touch panel is used to track the position of the ball on the plate, …
Simultaneous Actuation And Sensing Of Electrostatic Mems,
2022
Air Force Institute of Technology
Simultaneous Actuation And Sensing Of Electrostatic Mems, Jacob E. Song
Theses and Dissertations
Micro-Electro-Mechanical Systems (MEMS) are devices that play important roles of sensing and actuation in many different industries including automation, electronics, medical, communications, and defense. In order to make full use of these devices, it is important to understand the peripherals that enable these devices. Simultaneous actuation and control of MEMS devices is an important area of research as it enables feedback control of these device and allows devices to maintain performance as devices depreciate over their lifetime. The aim of this thesis is to perform a design space analysis on an electrostatic MEMS simultaneous actuation and sensing circuit that is …
Complete Neighbourhood Search Heuristic Algorithm For Portfolio Optimization,
2022
University of Dar es Salaam, College of Information and Communication Technology, Department of Electronics and Telecommunications, P. O. Box 33335, Dar es Salaam, Tanzania.
Complete Neighbourhood Search Heuristic Algorithm For Portfolio Optimization, Collether John
Tanzania Journal of Engineering and Technology (TJET)
In portfolio optimization, the fundamental goal of an investor is to optimally allocate investments between different assets. Mean-variance optimization methods make unrealistic assumptions to solve the problem of optimal allocation. On the other hand, when realistic constraints like holding size and cardinality are introduced it leads to optimal asset allocation which differ from the mean variance optimization. The resulting optimization problem become quite complex as it exhibits multiple local extrema and discontinuities. Heuristic algorithms work well for the complex problem. Therefore, a heuristic algorithm is developed which is based on hill climbing complete (HC-C). It is utilized to solve the …
Mechanical Characterization Instrumentation For Multi-Material Systems,
2022
University of Alabama in Huntsville
Mechanical Characterization Instrumentation For Multi-Material Systems, Nicholas Ginga
Summer Community of Scholars (RCEU and HCR) Project Proposals
No abstract provided.
Developing A Self-Navigating Robot To Map Disaster Regions,
2022
University of Alabama in Huntsville
Developing A Self-Navigating Robot To Map Disaster Regions, Nagavenkat Adurthi
Summer Community of Scholars (RCEU and HCR) Project Proposals
No abstract provided.
A Study Of Autorotation: Samara Seed Pods And Tethered Autogyros,
2022
University of Central Florida
A Study Of Autorotation: Samara Seed Pods And Tethered Autogyros, Jonathan Mcconnell
Electronic Theses and Dissertations, 2020-2023
This work presents an exploration of autorotational behavior, observing naturally occurring structures to provide insight into the stability and design of autorotative mechanisms. A rotor is said to be in autorotation when, in the presence of airflow, a natural rotation generates lift to either suspend or slow the descent of a rotor. This phenomenon is observed in nature in the form of samaras, a seed pod morphology evolved in parallel by maple trees and many other organisms around the world. Simulation and experimental observation of samara vertical descent behavior provides insight into the stability of naturally evolved autorotative structures. A …
Assembly Of Alumina Particles In Aqueous Suspensions Induced By High‐Frequency Ac Electric Field,
2022
Old Dominion University
Assembly Of Alumina Particles In Aqueous Suspensions Induced By High‐Frequency Ac Electric Field, James E. John, Shizhi Qian, Dipankar Ghosh
Mechanical & Aerospace Engineering Faculty Publications
The role of high-frequency alternating current (AC) electric field in the assembly of alumina particles in aqueous media was investigated. Field–particle interactions were in situ investigated for coarse and fine powder particles in very dilute suspensions. For both coarse and fine particles, AC field-induced assembly led to the formation of chains of particles within a minute, which were aligned in the field direction. However, a much finer network of particle chains evolved in fine particle suspensions. Threshold field strength for chain formation was also lower for fine particles (28 V/mm) than for coarse particles (50 V/mm), suggesting stronger interactions for …
Solute Concentration Effects On Microstructure And The Compressive Strength Of Ice-Templated Sintered Lithium Titanate,
2022
Old Dominion University
Solute Concentration Effects On Microstructure And The Compressive Strength Of Ice-Templated Sintered Lithium Titanate, Rohan Parai, Ziyang Nie, Raina Hempley, Gary M. Koenig Jr., Dipankar Ghosh
Mechanical & Aerospace Engineering Faculty Publications
This work investigated the role of sucrose and cationic dispersant (1‐hexadecyl)trimethylammonium bromide concentration on ice‐templated sintered lithium titanate microstructure and compressive strength, to enable a comprehensive understanding of composition selection and elucidate processing–microstructure–mechanical property relationships. Sucrose and dispersant concentrations were varied to change total solute concentration in suspensions and viscosity. Dispersant was more effective in reducing viscosity than sucrose; however, their combination had an even greater impact on reducing viscosity. Based on viscosity measurements, a total of 12 suspension compositions were developed, and materials were fabricated at two different freezing front velocity (FFV) regimes. Solute concentration greatly influenced ice‐templated microstructure …
Small-Satellite Attitude Control Using Sinusoidal Actuator Motion: Experiments On The International Space Station,
2022
University of Kentucky
Small-Satellite Attitude Control Using Sinusoidal Actuator Motion: Experiments On The International Space Station, K. Ryan Lush
Theses and Dissertations--Mechanical and Aerospace Engineering
In this work, we design, build, and test two 1.25U CubeSats. These small satellites were deployed on the International Space Station to perform attitude control experiments in microgravity. These CubeSats use an oscillating-mass actuation system for attitude control as opposed to traditional flywheels. Each CubeSat uses 3 pairs of servomotors to oscillate masses about 3 orthogonal axes. The servomotors have strict rotational stroke limits. Thus, they cannot spin continually. To oscillate each pair of masses, the angle of each servomotor is commanded using signals that are continuous and piecewise sinusoidal with amplitudes that do not violate the servomotor stroke constraints. …
Numerical And Scaling Study On Application Of Inkjet Technology To Automotive Coating,
2022
University of Kentucky
Numerical And Scaling Study On Application Of Inkjet Technology To Automotive Coating, Masoud Arabghahestani Dr.
Theses and Dissertations--Mechanical and Aerospace Engineering
A thorough literature review identified lack of precision control over quality of droplets generated by the currently available industrial sprayers and a growing need for higher quality droplets in the coating industry. Particularly, lack of knowledge and understanding in continuous inkjets (CIJ) and drop-on-demand (DOD) technologies is identified as significant. Motivated by these needs, this dissertation is dedicated to computational fluid dynamics (CFD) and scaling studies to improve existing inkjet technologies and develop new designs of efficient coating with single and/or multiple piezoelectric sensors to produce on-demand droplets. This dissertation study aims at developing a new DOD type coating technology, …
Schaeffler F-250 Bev Conversion: Power Electronics,
2022
The University of Akron
Schaeffler F-250 Bev Conversion: Power Electronics, Leslie Sawyer
Williams Honors College, Honors Research Projects
This report shows the work that was done on the power electronics system in the industry sponsored Schaeffler demonstration truck project. The goal of the project was to convert a combustion Ford F250 into a battery electric vehicle, while using as much Schaeffler technology as possible. After the vehicle is converted it will be used as a demonstration vehicle to show potential investors. While this project is still in progress, the work that was done during this time was substantial to the development of this project. Progress that has been made on the power electronics system includes developments in selecting …
Dupont Seal Mold Assembly Machine,
2022
The University of Akron
Dupont Seal Mold Assembly Machine, Brett Biederman, Craig Hanchett, Matthew Chilton
Williams Honors College, Honors Research Projects
The Seal Assembly Machine is a custom-built device that is designed to seat a thin polymer part between two mating pieces of metal tooling. To meet the specifications of the sponsor, the Seal Assembly machine must perform its function more quickly and accurately than manual labor at the same task. At the time of compiling this report, the machine is not yet functional due to time constraints.
