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Articles 1 - 15 of 15
Full-Text Articles in Engineering
A Nonlinear Systems Framework For Cyberattack Prevention For Chemical Process Control Systems, Helen Durand
A Nonlinear Systems Framework For Cyberattack Prevention For Chemical Process Control Systems, Helen Durand
Chemical Engineering and Materials Science Faculty Research Publications
Recent cyberattacks against industrial control systems highlight the criticality of preventing future attacks from disrupting plants economically or, more critically, from impacting plant safety. This work develops a nonlinear systems framework for understanding cyberattack-resilience of process and control designs and indicates through an analysis of three control designs how control laws can be inspected for this property. A chemical process example illustrates that control approaches intended for cyberattack prevention which seem intuitive are not cyberattack-resilient unless they meet the requirements of a nonlinear systems description of this property.
Economic Model Predictive Control Design Via Nonlinear Model Identification, Laura Giuliani, Helen Durand
Economic Model Predictive Control Design Via Nonlinear Model Identification, Laura Giuliani, Helen Durand
Chemical Engineering and Materials Science Faculty Research Publications
Increasing pushes toward next-generation/smart manufacturing motivate the development of economic model predictive control (EMPC) designs which can be practically deployed. For EMPC, the constraints, objective function, and accuracy of the state predictions would benefit from process models that describe the process physics. However, obtaining first- principles models of chemical process systems can be time-consuming or challenging such that it is preferable to develop physics-based process models automatically from process operating data. In this work, we take initial steps in this direction by suggesting that because experiments that are used to characterize first-principles models often target specific types of data, an …
State Measurement Spoofing Prevention Through Model Predictive Control Design, Helen Durand
State Measurement Spoofing Prevention Through Model Predictive Control Design, Helen Durand
Chemical Engineering and Materials Science Faculty Research Publications
Security of chemical process control systems against cyberattacks is critical due to the potential for injuries and loss of life when chemical process systems fail. A potential means by which process control systems may be attacked is through the manipulation of the measurements received by the controller. One approach for addressing this is to design controllers that make manipulating the measurements received by the controller in any meaningful fashion very difficult, making the controllers a less attractive target for a cyberattack of this type. In this work, we develop a model predictive control (MPC) implementation strategy that incorporates Lyapunov-based stability …
Data-Based Nonlinear Model Identification In Economic Model Predictive Control, Laura Giuliani, Helen Durand
Data-Based Nonlinear Model Identification In Economic Model Predictive Control, Laura Giuliani, Helen Durand
Chemical Engineering and Materials Science Faculty Research Publications
Many chemical/petrochemical processes in industry are not completely modeled from a first-principles perspective because of the complexity of the underlying physico-chemical phenomena and the cost of obtaining more accurate, physically relevant models. System identification methods have been utilized successfully for developing empirical, though not necessarily physical, models for advanced model-based control designs such as model predictive control (MPC) for decades. However, a fairly recent development in MPC is economic model predictive control (EMPC), which is an MPC formulated with an economics-based objective function that may operate a process in a dynamic (i.e., off steady-state) fashion, in which case the details …
Huron-To-Erie Water Quality Data Platform, Lanyu Xu, Carol J. Miller, James Olson, Michael Beaulac
Huron-To-Erie Water Quality Data Platform, Lanyu Xu, Carol J. Miller, James Olson, Michael Beaulac
Civil and Environmental Engineering Faculty Research Publications
To address the challenges of environmental degradation, creation of a sustainable urban environment, and increased public engagement and awareness, a mass-oriented, user-friendly and cloud-based data platform has been developed and deployed to provide integrative water quality data in one of the most critical urban corridors of the Laurentian Great Lakes system. In this paper, we describe the data platform developed for the watershed and connecting channels between Lake Huron and Lake Erie, including the St. Clair River, Lake St. Chair, and the Detroit River. This data platform greatly facilitates the access of data across data providers and agencies. Several example …
Prevalence Of Infection-Competent Serogroup 6 Legionella Pneumophila Within Premise Plumbing In Southeast Michigan, Brenda G. Byrne, Sarah Mccolm, Shawn P. Mcelmurry, Paul E. Kilgore, Joanne Sobeck, Rick Sadler, Nancy G. Love, Michele S. Swanson
Prevalence Of Infection-Competent Serogroup 6 Legionella Pneumophila Within Premise Plumbing In Southeast Michigan, Brenda G. Byrne, Sarah Mccolm, Shawn P. Mcelmurry, Paul E. Kilgore, Joanne Sobeck, Rick Sadler, Nancy G. Love, Michele S. Swanson
Department of Pharmacy Practice
Coinciding with major changes to its municipal water system, Flint, MI, endured Legionnaires’ disease outbreaks in 2014 and 2015. By sampling premise plumbing in Flint in the fall of 2016, we found that 12% of homes harbored legionellae, a frequency similar to that in residences in neighboring areas. To evaluate the genetic diversity of Legionella pneumophila in Southeast Michigan, we determined the sequence type (ST) and serogroup (SG) of the 18 residential isolates from Flint and Detroit, MI, and the 33 clinical isolates submitted by hospitals in three area counties in 2013 to 2016. Common to one environmental and four …
Development Of Sorption Technology For Extracting Rare Earth Elements From Coal Fly Ash, Bilal Syed
Development Of Sorption Technology For Extracting Rare Earth Elements From Coal Fly Ash, Bilal Syed
Research Opportunities for Engineering Undergraduates (ROEU) Program 2017-18
Rare Earth Elements (REEs) are elements with many high tech uses (e.g., smartphones, electric cars, advanced weaponry) and have been identified by the DOE to be critical to the US economy. Currently, China supplies over 85% of REEs resulting in an undiversified market and susceptibility to supply shock and economic insecurity. To address this susceptibility, this research aims to develop an economic and environmentally-friendly method of extracting REEs from nascent, plentiful sources such as coal and coal by-products like fly ash.
Optical Coherence Tomography Application To Alopecia In The Scalp, Elizabeth Melcher
Optical Coherence Tomography Application To Alopecia In The Scalp, Elizabeth Melcher
Research Opportunities for Engineering Undergraduates (ROEU) Program 2017-18
Alopecia is the loss of hair, whether it be from the scalp or other regions of the body. Current techniques used to best diagnose and track alopecia are often invasive, requiring a biopsy for results. The use of the OCT, or optical coherence tomography, could drastically improve a patient’s experience in undergoing a diagnosis while proving accurate results. The objective of this study is to develop diagnostic algorithms for the rapid, non-invasive diagnosis of alopecia with OCT. The first step is collecting OCT images of a healthy scalp to understand the anatomical structures with the imaging technique.
Low Cost Waist Line Circumference Health Management Belt, Raghav Talreja
Low Cost Waist Line Circumference Health Management Belt, Raghav Talreja
Research Opportunities for Engineering Undergraduates (ROEU) Program 2017-18
One third of the American population is obese or near obese, and $150 billion is spent in weight management. Current devices to monitor weight are expensive, and niche products are designed for health enthusiasts. This project investigates user needs, development and commercialization steps for a low cost health management belt.
Cfd/Fea Of A Steam Methane Reforming Tube, Matthew Wegener
Cfd/Fea Of A Steam Methane Reforming Tube, Matthew Wegener
Research Opportunities for Engineering Undergraduates (ROEU) Program 2017-18
Steam methane reforming is the primary method by which hydrogen is produced; increased efficiency in hydrogen production could enable hydrogen’s usage as an alternative fuel. The objectives of this project are to construct a robust CFD/FEA model of a steam methane reforming tube, and to perform CFD/FEA analysis in both steady and transient operational states, comparing thermal stresses/strains in the tube wall in the two states and relating tube stresses/strains to properties of the process controller.
Design And Development Of An Emergency System For Children In A Hot Car At Risk Of Heatstroke, Nathan Kisha
Design And Development Of An Emergency System For Children In A Hot Car At Risk Of Heatstroke, Nathan Kisha
Research Opportunities for Engineering Undergraduates (ROEU) Program 2017-18
Since 1998, an average of 37 children have died every year due to heat-related deaths after being stuck in a vehicle, making it the leading cause of non-crash-related fatalities among children. This creates an opportunity to create a system which will be able to detect this danger and do something in order to prevent it. There are 4 main objectives for the system to be able to accomplish: 1) determine if the temperature in the car poses a risk, 2) use an alarm to provide a warning and wake up a sleeping child, 3) determine if someone is in the …
Developing Vascular Graft From Adipose-Derived Stem Cells, Ashley C. Apil
Developing Vascular Graft From Adipose-Derived Stem Cells, Ashley C. Apil
Research Opportunities for Engineering Undergraduates (ROEU) Program 2017-18
This project aims to differentiate adipose-derived stem cells into fibroblasts through the addition of platelet-derived growth factor (PDGF) into the culture media. Differentiation protocol will be optimized, then successful differentiation will be verified through PCR analysis. The ASC-fibroblasts will then be seeded into a ring construct as outlined by the protocol by Lam et al. The ring constructs will be tensile tested and analyzed through histology to characterize their strength and cellularity.
Evaluating The Effectiveness Of Biochar For Treating Wsu Parking Lot Runoff, Alan-Christian Thomas
Evaluating The Effectiveness Of Biochar For Treating Wsu Parking Lot Runoff, Alan-Christian Thomas
Research Opportunities for Engineering Undergraduates (ROEU) Program 2017-18
Various pollutants including pesticides, herbicides, automotive fluids, and excess nutrients from fertilizers are found in high concentrations in urban runoff. There are many technologies that can be used to control and redirect the water flow such as retention basins, constructed wetlands, and rain gardens; however, these methods are specifically focused on controlling water and not necessarily the nutrients and contaminants in the water. There has recently been an increased interest in the potential for using additional materials (e.g., compost, charcoal) to enhance the pollution treatment ability by either adding them to the soil or by engineering prefilters to remove pollutants …
Evaluating The Effectiveness Of Bioswales In Southeast Michigan, Grace Crowe
Evaluating The Effectiveness Of Bioswales In Southeast Michigan, Grace Crowe
Research Opportunities for Engineering Undergraduates (ROEU) Program 2017-18
Bioswales are modern storm water management structures that utilize biological components in a traditional wale to more effectively filter out contaminants. Because of its modern nature the installation and management practices for bioswales is still developing. Perfecting the practices surrounding bioswales in southeast Michigan environment can aid in the advancement of green infrastructure in the state. Wayne State installed a bioswale in one its parking lots in New Center with the help of the Detroit Biodiversity Network (DBN). We wanted to monitor the progression of this existing bioswale throughout the year, observing the system components effecting overall bioswale performance. The …
Characterization Of Electroactive Nanofibers For Nerve Regeneration, Jean-Yves Azar
Characterization Of Electroactive Nanofibers For Nerve Regeneration, Jean-Yves Azar
Research Opportunities for Engineering Undergraduates (ROEU) Program 2017-18
In the event of peripheral nerve injury, loss of function may occur as the result of a severed nerve. Hollow nerve gap conduits are used to provide a protected environment for nerves to reconnect and regain function, although therapies for nerve gaps larger than 3 cm lack a stable environment for nerves to reconnect. Development of a nerve guide conduit filler has been proposed to mimic the cell’s microenvironment. This would lead to increased functional regeneration. We are aiming to create a biomaterial to act as a filler for the hollow nerve gap conduits to promote functional regeneration of the …