http://yetl.yabesh.ir/yetl1/handle/yetl/4273117 2026-04-28T12:57:45Z http://yetl.yabesh.ir/yetl1/handle/yetl/4310796 An Investigation into the Viability of Cell-Level Temperature Control in Lithium-Ion Battery Packs1 Abadie, Preston T.; Docimo, Donald J. This article focuses on the thermal management and temperature balancing of lithium-ion battery packs. As society transitions to relying more heavily on renewable energy, the need for energy storage rises considerably, as storage facilitates power regulation between these sources and the grid. Lithium-ion batteries are leading the market for energy storage options, but their properties are temperature sensitive, with thermal abuse resulting in shortened pack lifetime and possible safety issues. Current battery thermal management systems (BTMS) are implemented in a number of ways to ensure consistent and reliable operation. However, they are typically limited in architecture and restricted in ability to attend to temperature gradients. This work proposes a BTMS topology that permits control of the individual cooling received by a cell in a pack. First, an analysis is done using timescale separation to confirm that cell-level temperature control is capable of extending the lifetime of a pack as compared to pack-level control. The analysis is used to guide the gain tuning of a state feedback controller, which directs more cooling effort to cells of higher temperatures. Validation of the BTMS topology and control is performed through the simulation of a battery pack, with variations in total cooling power and resistance heterogeneity. The outcome of the validation studies indicates that the proposed BTMS configuration is better equipped to reduce temperature differences and extend pack life. This benefit increases as total input power increases, giving the controller more freedom to cool unhealthy cells while remaining within power constraints. 2024-01-01T00:00:00Z http://yetl.yabesh.ir/yetl1/handle/yetl/4310572 Erratum: “Frequency Domain Adjoint-Based Iterative Learning Control for MIMO Systems” [ASME Letters Dyn. Sys. Control, 2025, 5(2), p. 021007; DOI: 10.1115/1.4067535] Lee, Yu-Hsiu; Chou, Wei-Yi An operation error occurred in the equations of the final publication, please find the corrected equations as follows: Equation (4) should be written as J(u)=12eTe.Equation (6) should be written as ∇J(uk)=GTek.Equation (8) should be written asGT=[(G11)T…(Gno1)T⋮⋮(G1ni)T…(Gnoni)T]=[T0⋱0T]⏟Tni[G11…Gno1⋮⋱⋮G1ni…Gnoni]⏟G~[T0⋱0T]⏟TnoThe paragraph under Eq. (8), both GkG should be written as GTek.Equation (9) should be written asuk+1=uk+ρGTek=(IniN−ρGTG)uk+ρGTydesThe paragraph under Eq. (9) should be corrected as “where IniN is an identity matrix of size niN×niN.”Equation (10) should be written as ρ*=1‖GTG‖=1‖G‖2In the sentence right after Eq. (10), ‖Gke‖2 should be written as ‖GTek‖2Equation (11) should be written asρ*=1maxω‖G(ejω)‖2≈‖ek‖2‖GTek‖2, 2025-01-01T00:00:00Z http://yetl.yabesh.ir/yetl1/handle/yetl/4310410 Nonlinear System Identification With Gaussian Processes Using Laguerre and Kautz Filters1 Illg, Christopher; Balar, Nishilkumar; Nelles, Oliver System identification can be used to determine data-driven mathematical models of dynamic processes. For nonlinear processes, model architectures that are as flexible as possible are required. One possibility is to utilize Gaussian processes (GPs) as a universal approximator with an external dynamics realization, leading to highly flexible models. Novel Laguerre and Kautz filter-based dynamics realizations in GP models are proposed. The Laguerre/Kautz pole(s) are treated as hyperparameters with the GPs’ standard hyperparameter for the squared exponential kernel with automatic relevance determination (SE-ARD) kernel. The two novel dynamics realizations in GP models are compared to different state-of-the-art dynamics realizations such as finite impulse response (FIR) or autoregressive with exogenous input (ARX). The big data case is handled via support points. Using Laguerre and Kautz regressor spaces allows both the dimensionality of the regressor space to be kept small and achieve superior performance. This is demonstrated through numerical examples and measured benchmark data of a Wiener–Hammerstein process. 2025-01-01T00:00:00Z http://yetl.yabesh.ir/yetl1/handle/yetl/4310392 Associate Editor's Recognition The Editor-in-Chief of the ASME Letters in Dynamic Systems and Control would like to thank all the Associate Editors for their expertise and time reviewing manuscripts in 2024. Serving as an Associate Editor for the journal is a critical service necessary to maintain the quality of our publication and to provide the authors with a valuable peer review of their work. Below is a complete list of Associate Editors for 2024. We would also like to acknowledge two outstanding Associate Editors of the Year.2024 Associate Editors of the Year 2025-01-01T00:00:00Z