Robert Landers
Advanced Manufacturing Collegiate Professor of Mechanical Engineering
Friday, May 5
12:00-1:15 p.m.
Luncheon Keynote: "Control–Oriented Modeling and Estimation of Li Ion Batteries"
Abstract
Lithium ion batteries have become an essential component of today’s consumer electronics (e.g., cell phone, laptop computers and tablets) and electric vehicles as they increasingly take a larger share of the automotive market. The battery industry is continually working to increase battery performance, especially battery life. Much of this work is devoted to the development of new battery chemistries; however, the development process can require several years. Another body of work is considering advancements in Battery Management Systems (BMSs). The BMS is responsible for monitoring the state of the battery while ensuring optimal performance and safety. This talk will discuss our work towards advancing the capabilities of BMSs. We will describe a control-oriented Single Particle Model (SPM) and its use in the design of an output injection observer to estimate battery State-of-Charge (SOC). Lyapunov analysis is used to determine the design rules such that a stable observer can be constructed. An adaptive output injection observer is then created to ensure good estimation at high C rates by performing on-line estimation of the disturbance model parameters. Lyapunov analysis is again employed to determine the conditions under which state and disturbance model parameters will converge and, in the presence of sensor noise, when they are bounded. The SPM is extended by including electrolyte physics and simulation studies show the improved prediction performance for constant discharge and dynamic (e.g., highway fuel economy tests, dynamic stress test) current profiles. The presentation will conclude with a discussion of future work towards degradation modeling and State-of-Health (SOH) estimation, fast charging techniques, and improved battery dynamic modeling.
Biography
Prof. Robert Landers joined the College of Engineering at the University of Notre Dame as the Advanced Manufacturing Collegiate Professor of Mechanical Engineering in the Department of Aerospace and Mechanical Engineering in 2021. He is also an associate faculty director of the University of Notre Dame's iNDustry Labs, an anchor of the South Bend-Elkhart region’s Labs for Industry Futures and Transformation (LIFT) initiative, established through a $42.4 million grant awarded to Notre Dame in 2019 from Lilly Endowment, Inc. to forge innovative partnerships between South Bend-Elkhart region’s industries and dedicated resources at the University to support a more prosperous region. Landers received his Ph.D. in Mechanical Engineering from the University of Michigan, his M.S. in Mechanical Engineering from Carnegie Mellon University, and his B.S. in Mechanical Engineering from the University of Oklahoma.
His research interests include control-oriented modeling, estimation, and control of fuel cells and lithium ion batteries. The Landers group has stabilized voltage in open-cathode fuel cells via active disturbance rejection and temperature regulation. The group has extended a control-oriented single particle model to include stress-induced diffusion and electrolyte dynamics and created an output injection observer to estimate battery state-of-charge, even at high C rates, by performing on-line estimation of the disturbance model parameters. The Landers group is currently researching control-oriented modeling and estimation of battery state-of-health and fast charging techniques.
Relevant Energy Publications
- Lotfi, Nima, Robert G. Landers, Jie Li, and Jonghyun Park. "Reduced-order electrochemical model-based SOC observer with output model uncertainty estimation." IEEE Transactions on Control Systems Technology 25, no. 4 (2016): 1217-1230.
- Li, Jie, K. Adewuyi, Nima Lotfi, Robert G. Landers, and Jonghyun Park. "A single particle model with chemical/mechanical degradation physics for lithium ion battery State of Health (SOH) estimation." Applied energy 212 (2018): 1178-1190.
- Lotfi, Nima, Hesam Zomorodi, and Robert G. Landers. "Active disturbance rejection control for voltage stabilization in open-cathode fuel cells through temperature regulation." Control Engineering Practice 56 (2016): 92-100.
- Li, J., Nima Lotfi, Robert G. Landers, and Jonghyun Park. "A single particle model for lithium-ion batteries with electrolyte and stress-enhanced diffusion physics." Journal of The Electrochemical Society 164, no. 4 (2017): A874.
- Riemann, Brody JC, Jie Li, Kasim Adewuyi, Robert G. Landers, and Jonghyun Park. "Control-Oriented Modeling of Lithium-Ion Batteries." Journal of Dynamic Systems, Measurement, and Control 143, no. 2 (2021): 021002.