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Electrical and Computer Engineering

Category: Faculty/Staff

ECE faculty awarded a NOAA grant for Detection, Monitoring, and Removal of Microplastics

  • September 4th, 2024

ECE Professor Mark Cheng was recently awarded a grant from the National Oceanic and Atmospheric Administration titled “Holistic Detection, Monitoring, and Removal of Microplastics Using Integrated Sensing and Filtration Systems”

The project proposes (1) to create a low-fidelity product of the portable, cost-effective integrated system of microplastic filters and sensors that real-time monitor, capture, and remove micro and nano plastics in water streams, coastal rivers, and other waterbodies, classifying them by size, shape, morphology, and chemical composition. (2) to refine filtration and sampling methods based on user-centered design in partnership with potential users, including federal agencies, academic institutions and private sectors, (3) and to establish a user community promoting public awareness of microplastic challenges and responsible behaviors that can help reduce microplastic inputs and accumulation in the ocean, and mitigate the environmental impact due to such a micro and nano plastic pollution. Combining these novel sensor and filter devices will enable the holistic operation of capture, removal, and monitoring of targeted micro and nanoplastics from stream water and water resources recovery facilities to the Gulf River and oceanic environment, positively impacting many local and coastal communities.

 

UA Undergraduates Present Summer Research at ICFDA 2024

  • August 14th, 2024

A group of 9 students from the College of Engineering  (from both the ECE and CS departments) continued their international research experiences this summer by presenting posters of their research at the 2024 International Conference on Fractional Differentiation and Applications (ICFDA) in Bordeaux, France.

Students shared the results of their projects, which were focused on fractional-order circuits and systems, to audiences of mathematicians, engineers, and scientists across a range of disciplines.  While at the conference students were able to participate in workshops and network with leading professionals in the field, including Dr. Igor Podluby and Dr. Roberto Garrappa (researcher’s whose work they have extensively used in their projects).

These students are part of an NSF-funded International Research Experiences for Students (IRES) program coordinated by Dr. Todd Freeborn (Department of Electrical Engineering) in collaboration with Dr. Jaroslav Koton (Vice-Dean for Research and PhD Study in the Faculty of Electrical Engineering and Communication) at the Brno University of Technology in the Czech Republic.  Students spent 12 weeks researching with faculty at the Brno University of Technology from May to July and are returning to UA to continue their studies for the Fall semester.

Alabama Teachers Join Engineering Research Labs

  • July 25th, 2024

This summer Dr. Todd Freeborn (Department of Electrical and Computer Engineering) and Dr. Chris Crawford (Department of Computer Science) launched an NSF-supported Research Experiences for Teachers (RET) site at the University of Alabama.

This site, Engaging  and Training Alabama STEM Teachers in Sensing Technologies, has brought 11 Alabama middle and high school teachers to campus for June and July to engage in 7-weeks of research under the mentorship of faculty from the College of Engineering.  This years group of teachers are from schools in the Tuscaloosa City, Tuscaloosa County, Greene County, and Hale County districts.

The goal of the program is to get teachers hands-on experience with engineering research that they can take back into their classrooms to use in their lessons and teaching.  All research projects that the teachers will support use sensing and measurement technologies to explore physiological and environmental monitoring. This common theme on sensing is based on the fact that knowing how to measure and analyze physical features of materials, devices, tissues, and/or the environment underlies many engineering research questions.

Beyond their research, teachers are participating in weekly workshops to learn more about engineering careers, sensors/programming, and receive support to translate these experiences into curriculum for their classrooms.  The program will wrap up on July 25, 2024 when all participants present their summer research results at a Summer Research Symposium hosted in Shelby Hall.

ECE Faculty receive a grant dor development of Rare-Earth-Free magnets

  • July 12th, 2024

A group of ECE faculty with Dr. Shuhui Li as the PI and Drs. Yang-Ki Hong and Qianzhi Zhang as co-PIs received a National Science Foundation award titled “RAISE: CET: Rare-Earth-Free Magnet and AI-Driven Control for Power Generation, transmission, and Grid Integration of Offshore Wind”.

The main objectives of this project are to advance offshore wind technologies from the level of individual wind turbines to their integration into the system level of an offshore wind farm. The first goal is to develop magnets that do not rely on rare-earth materials. By doing so, the project seeks to reduce the U.S.’s reliance on foreign suppliers for rare-earth materials in offshore wind turbines. The second goal is to design an AI-driven control system at the MW scale that can overcome the unstable operations of individual permanent magnet synchronous generator (PMSG) wind turbines that have been reported in the literature and by the industry in offshore applications. The third goal aims to develop temporal and spatial models that can be used to manage highly distributed offshore wind turbines and wind farms over a large geographic area. These models will improve offshore wind transmission planning and integration of the offshore grid with the onshore main grid. Lastly, the project aims to establish a new testing mechanism using a unique per-unit and time-angular domain transformation. This will enable experimental research and evaluation of high-voltage, high-power hybrid AC-DC networks of the integrated electric power system with offshore wind, based on low-voltage, low-power hybrid AC/DC equivalent systems.

Dr. Shunqiao Sun receives a CAREER award

  • April 11th, 2024

Dr. Shunqiao Sun received the 2024 National Science Foundation (NSF) CAREER Award, for the project entitled, “CAREER: Towards Fundamentals of Adaptive, Collaborative and Intelligent Radar Sensing and Perception”.

Automotive radar imaging represents a pressing technological need in perception for automotive active safety and autonomous driving. Automotive radar operating at millimeter-wave frequencies (typically around 77 GHz) is indispensable due to its superior capability in measuring range, velocity, and offering better perception performance in occlusion situations under all weather conditions and much lower cost than Lidar. The state-of-the-art automotive radar is prone to mutual interference and multipath issues, and its limited angular resolution – approximately 13 degrees – is inadequate for facilitating perception tasks for fully autonomous driving. This CAREER project aims to innovate the automotive radar perception in service of well-being of individuals in society and reduction of fatal accidents on U.S. highways by exploring adaptive, collaborative sensing and radar imaging physics principles. It deepens our understanding of how such sensing can enhance the dynamic range and address the ill-posed nature of the radar imaging inverse problem. Addressing the challenges in automotive radar imaging necessitates collaboration between academia and industry. Through collaboration with automotive industry sector, this project will make the research more impactful and pertinent, hastening the transition of research findings into automotive industry applications. Autonomous vehicle research helps attract underrepresented researchers. Through K-12 outreach activities and recruiting underrepresented groups and women in engineering, this project will promote diversity in the STEM research, inspiring them to pursue advanced research in radar field.

This CAREER project addresses the ill-posed inverse problem inherent in automotive radar imaging by investigation of learning based adaptive and collaborative methodologies. The project tackles the robust radar perception for autonomous vehicles problem through incorporation of the radar imaging physics to drive the design of innovative machine learning algorithms. Intelligent signal processing and machine learning techniques will be developed at multiple layers, including 1) learning-based adaptive radar transmit parameter adjustment, 2) iterative optimization algorithms to enhance the dynamic range of automotive radar sensing by exploiting constructive interference, 3) model-based learning framework for collaborative high-resolution radar imaging in an automotive radar network, 4) physics-aware radar machine learning algorithms for robust environment perception. These new techniques will demonstrate how the science insights advance high resolution radar imaging, and robustly detect and classify objects in the highly dynamic autonomous driving environment.

UA Leading Project to Give EV Batteries Second Life

  • October 24th, 2023
Electric vehicles batteries will find a second life in EV charging stations under a project led by The University of Alabama.

With $4 million in support from the United States Department of Energy, UA is partnering with Alabama Power and Mercedes-Benz U.S. International Inc. to develop and demonstrate ways to use older EV batteries, extending their usable life and reducing their carbon footprint while lessoning demand on power grids. The project is also supported by another $4 million in cost-share bringing the project budget to a total of $8 million.

“The innovative work supported through the U.S. Department of Energy is exemplary of how industrial partnerships enhance the research and educational mission of the University,” said Dr. Allen Parrish, interim vice president for research and economic development. “This is a highly impactful R&D project led by our outstanding College of Engineering faculty that also incorporates the development of the next generation of highly-skilled workers in areas critical to the state’s economic development.”

The project is one of 10 selected for funding from the federal Bipartisan Infrastructure Law Electric Drive Vehicle Battery Recycling and Second Life Applications, announced by the White House. At UA, the research is part of the Alabama Mobility and Power Center, established in partnership with Alabama Power and Mercedes-Benz U.S. International Inc. as a research and workforce development center to meet the needs of the electric vehicle market.

“These batteries serve electric vehicles when they are new, and, with this project, they can continue to serve them but in stationary charging application after retiring from their mobile application,” said Dr. Jaber Abu Qahouq, professor of electrical and computer engineering and project lead.

As more EVs are sold, the demand for critical battery minerals, such as lithium and graphite, is projected to increase by as much as 4,000% in the coming decades. The federal funding overseen by the energy department is intended to support the recycling and reuse segment of the domestic battery supply chain.

Any technical solution must also be economically viable, a challenge the UA-led project plans to demonstrate can be overcome.

The lithium-ion battery packs that power EVs are replaced when they no longer can store a charge more than 70-80% of their original capacity. Reusing EV batteries for other applications is challenging because the battery modules, or cells, in the pack degrade unevenly, leading to differing performance and operational risk.

Inside an EV, the batteries connect to each other to supply the electric power necessary for the vehicle. UA’s project proposes a system to connect the battery modules individually to power converters with control algorithms that monitors each battery’s health and optimizing the use of each battery. The resulting charging station adapts charging and discharging from the batteries based on their ability and health, avoiding potentially hazardous overstressing and extending their life.

The batteries in these stations could charge during times of low power demand on the power grid and recharge an EV when demand is at power demand peaks, potentially lowering cost.

“The environmental benefits can come from reducing the life cycle carbon footprint of these batteries by using them to their full potential before recycling their material, supporting transportation electrification by supporting EV charging network, supporting the integration and utilization of renewable energy sources to charge these batteries for later use in EV charging, and potentially reducing the amount of power that needs to be generated using fossil-fuel during peak power demand hours,” Abu Qahouq said.

The project team has cross-discipline expertise and experiences including faculty members, postdoctoral researchers, assistant research scientists, graduate students as well as engineers or specialists from MBUSI and Southern Company Services.

Along with Abu Qahouq and Parrish, the project includes Dr. Bharat Balasubramanian, engineering professor and chief mobility research and development officer for Alabama Transportation Institute; Dr. Shuhui Li, associate professor of electrical and computer engineering; Dr. Xinwu Qian, assistant professor of civil, construction and environmental engineering; Dr. Tim Haskew, associate dean for research and economic development for the College of Engineering; and Dr. Nicholas Baker, assistant professor of electrical and computer engineering.

https://news.ua.edu/2023/10/ua-leading-project-to-give-ev-batteries-second-life/

 

 

The University of Alabama, part of The University of Alabama System, is the state’s flagship university. UA shapes a better world through its teaching, research and service. With a global reputation for excellence, UA provides an inclusive, forward-thinking environment and nearly 200 degree programs on a beautiful, student-centered campus. A leader in cutting-edge research, UA advances discovery, creative inquiry and knowledge through more than 30 research centers. As the state’s largest higher education institution, UA drives economic growth in Alabama and beyond.

CONTACT: Adam Jones

PHONE: 205-348-4328
EMAIL: adam.jones@ua.edu

ME and ECE faculty receive an NSF grant for development of Affordable Robotic Lower-Limb Prosthesis

  • September 26th, 2023

NSF has awarded a grant titled “PFI-RP: Developing Market-Ready Affordable Robotic Lower-Limb Prostheses through Unified Joint Actuator Design and AI-Enhanced Multi-Modal Interactive Control” to Professors Xiangrong Shen (PI, Mechanical Engineering), Fei Hu and Edward Sazonov (co-PIs, Electrical and Computer Engineering)

The broader impact/commercial potential of this Partnerships for Innovation – Research Partnerships (PFI-RP) project is the availability of a highly affordable powered lower-limb prosthesis that provides versatile (multi-modal) operation in amputee users’ daily life. Currently there are approximately 2 million people living with limb losses in the U.S., and half of them are lower-limb amputees. Currently available prosthetic devices are mostly passive, unable to generate joint power in locomotion. As such, the passive prosthesis users typically experience substantial difficulty and discomfort in daily life, for example, being unable to climb stairs, walking in an obviously asymmetric way, and expending more energy in walking. There are two powered prosthetic devices for lower-limb amputees, but limited success has been reported due to issues such as high cost and difficulties in control and user intent recognition. The research and development efforts in the proposed project aim at overcoming these problems by creating an innovative lower-limb prosthesis that combines low cost, light weight, high reliability, and task versatility. With this innovative prosthetic device, the PFI team anticipates accelerating the lower-limb amputees’ acceptance of advanced robotic prostheses and significantly improve their mobility and quality of life in daily living.

The proposed project will explore multiple innovative technologies towards the development of the new powered lower-limb prosthesis. Firstly, it includes the development of a novel Common-Core-Components Knee-Ankle Prosthesis (C3KAP) design technology providing simple, low-cost, and highly reliable prosthetic joints that can be easily configured as prosthetic knee or ankle, supplemented by a novel variable stiffness force-moment load cell providing sensitive and reliable load measurement for prosthesis control. Secondly, it aims to develop a new bi-modal prosthesis motion control technology that provides natural leg swing motion, interactive stance-phase control, as well as simple and standardizable controller tuning for individual users. Finally, the PFI team will create an advanced AI-based intent recognizer to recognize the prosthesis users’ locomotive mode and desired mode transition, enabling amputees to enjoy the freedom of true multi-modal locomotion (walking and stair ascent/descent), significantly improved mobility and quality of life.

Prof. Sevgi Gurbuz receives an NSF award

  • August 18th, 2023

Assistant Professor Sevgi Gurbuz received an NSF award for the project titled “Collaborative Research: ECCS: Small: Personalized RF Sensing: Learning Optimal Representations of Human Activities and Ethogram on the Fly”.

Radio Frequency (RF) sensing can be a game changer to reduce healthcare costs and disparities, improve quality of care, and facilitate aging-in-place because they are non-contact, low-power devices that are effective in the dark, do not limit or alter freedom of movement, and do not acquire private visual or audio recordings. However, a significant impediment to the advancement of RF technologies for recognition and health assessment of human gait is the continuous and sequential nature of human movement, which can be characterized by periods of activity and transitions between activities that depend upon a person’s mobility. Gait is a person-specific trait that embodies important health information for many disorders as well as aging related impacts. Thus, a second important challenge is the development of personalized machine learning (ML) models that continually learn from person-specific RF data to improve health-driven gait analysis.

The goal of this project is the design of a personalized RF-sensing framework for the monitoring of activities of daily living (ADL), detection and characterization of pathological, gaits round-the-clock 24/7 in a natural setting. The proposal?s two main objectives are: 1) Create a human ethogram via the formulation of a new and general framework for interpretation, segmentation, and categorization of a broad swath of human activities based on modeling the structure and dynamics of individual mobility; 2) Design a new approach for personalization of deep neural networks, where consecutive and contiguous observations are used to increase the classification accuracy of ADL for the monitored person. The ethogram is a quantitative, structured approach to describing daily human behavior in terms of ?body states? while activities are then modeled as transitions between states. By introducing the concept of personalization to RF sensing, this project will broaden the realm of personalized devices beyond its current scope of wearable and implantable devices to now include RF sensors. The proposal integrates sensor and kinematic knowledge into DNN design, resulting in novel architectures with greater accuracy that will advance the state-of-the-art in RF signal classification more generally. Moreover, the central ideas in this proposal are independent of device specifications and can be generalized to other sensing modalities, paving the way for non-contact, ubiquitous, fine-grained personalized gait classification and analysis. The outcomes of this project will pave the way for timely interventions and more effective treatments in both home and clinical settings, reducing the costs and improving the accessibility of health care.

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