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Development of Linear Battery Model for Path Planning with Mixed Integer Linear Programming: Simulated and Experimental Validation

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IFAC-PapersOnLine 2023年第3期56卷 7-12页

作者： Drew D. Scott Isaac E. Weintraub Satyanarayana G. Manyam David W. Casbeer Manish Kumar Michael J. Rothenberger Department of Mechanical and Materials Engineering University of Cincinnati Electronics Engineer Control Science Center Air Force Research Laboratory WPAFB OH 45433 Research Scientist Infoscitex corp. a DCS company Dayton OH 45431 Technical Area Lead Cooperative & Intelligent Control Control Science Center Air Force Research Laboratory WPAFB OH 45433 Professor in Department of Mechanical and Materials Engineering University of Cincinnati Mechanical Engineer Flight Systems Integration Branch Air Force Research Laboratory WPAFB OH 45433

Mixed Integer Linear Programs (MILPs) are often used in the path planning of both ground and aerial vehicles. Such a formulation of the path planning problem requires a linear objective function and constraints, limiting the fidelity of the tracking of vehicle states. One such state often used is the charge level of the on board battery. High-fidelity battery state estimation requires nonlinear differential equations to be solved. This state estimation is vital in path planning to ensure flyable paths, however when using a linear path planning problem cannot implement these nonlinear models. Poor accuracy in battery estimation during the path planning runs the risk of the planned path being feasible by the estimation model but in reality will deplete the battery to a critical level, resulting in a dangerous planned path. To the end of higher accuracy battery estimation within a linear framework, we test a simple linear battery model which predicts the change in state-of-charge (SOC) of a battery given a power draw, time duration, and current SOC in the context of an a-priori path planning problem. This context differentiates itself from real-time estimation. In ahead-of-time path planning, the changes to battery draw are often assumed as a series of constant power draws as opposed to rapidly changing power draw which may occur in real-time battery tracking and estimation. The linear battery model is presented and then tested against alternate models in both numerical and in experimental tests. Further, the effect of the proposed linear model on the time-to-solve a resource constrained shortest path problem is also evaluated, where two different algorithms are used to solve the path planning problem. It is seen that the linear model performs well in battery state estimation while remaining implementable in a Linear Program or MILP, with minimal effect on the time-to-solve. This provides what we consider to be a worthwhile trade-off in improved accuracy relative to in

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3D printing for tissue/organ regeneration in China

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bio-Design and Manufacturing 2025年第2期8卷 169-242,I0001,I0002页

作者： Chaofan He Jiankang He Chengtie Wu Changshun Ruan Qi Gu Yongqiang Hao Yang Wu Shuo Bai Xiaoxiao Han Liliang Ouyang Jun Yin Hongzhao Zhou Zhuo Xiong Maobin Xie Lei Shao Jing Nie Liang Ma Cijun Shuai Changchun Zhou Xin Zhao Xuetao Shi Mengfei Yu Jiayin Fu Peng Wen Huixia Xuan Yuan Pang Yan’en Wang Yuan Sun Ziqi Gao Abdellah Aazmi Jingbo Zhang Tianhong Qiao Qixiang Yang Ke Yao Mao Mao Jianxin Hao Pinpin Wang Jirong Yang Huawei Qu Xinhuan Wang Xin Liu Shen Ji Shasha Liu Jingke Fu Bingxian Lu Mohan Wu Feng Chen Zihao Zheng Boqing Zhang Muyuan Chai Chaoying Zhang Mouyuan Sun Bo Peng Huayong Yang Yong He State Key Laboratory of Fluid Power and Mechatronic Systems School of Mechanical EngineeringZhejiang UniversityHangzhou 310027China Key Laboratory of 3D Printing Process and Equipment of Zhejiang Province School of Mechanical EngineeringZhejiang UniversityHangzhou 310027China State Key Laboratory for Manufacturing Systems Engineering Xi’an Jiaotong UniversityXi’an 710049China State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050China Research Center for Human Tissue and Organ Degeneration Institute of Biomedicine and BiotechnologyShenzhen Institutes of Advanced TechnologyChinese Academy of SciencesShenzhen 518055China University of Chinese Academy of Sciences Beijing 100049China Key Laboratory of Organ Regeneration and Reconstruction State Key Laboratory of Membrane BiologyInstitute of ZoologyChinese Academy of SciencesBeijing 100101China Beijing Institute for Stem Cell and Regenerative Medicine Beijing 100101China Shanghai Engineering Research Center of Innovative Orthopaedic Instruments and Personalized Medicine Clinical and Translational Research Center for 3D Printing TechnologyShanghai 200011China School of Biomedical Engineering Harbin Institute of Technology(Shenzhen)Shenzhen 518055China State Key Laboratory of Biochemical Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China Key Laboratory of Biopharmaceutical Preparation and Delivery Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China National Engineering Research Centre for High Efficiency Grinding Hunan UniversityChangsha 410082China Biomanufacturing Center Department of Mechanical EngineeringTsinghua UniversityBeijing 100084China State Key Laboratory of Tribology in Advanced Equipment Tsinghua UniversityBeijing 100084China The Fourth Affiliated Hospital of Guangzhou Medical University Guangzhou 511436China School of Biomedical Engineering Guangzhou Medic

As surgical procedures transition from conventional resection to advanced tissue-regeneration technologies,human disease therapy has witnessed a great leap *** particular,three-dimensional(3D)bioprinting stands as a landmark in this setting,by promising the precise integration of biomaterials,cells,and bioactive molecules,thus opening up a novel avenue for tissue/organ *** by the editorial board of bio-Design and Manufacturing,this review brings together a cohort of leading young scientists in China to dissect the core functionalities and evolutionary trajectory of 3D bioprinting,by elucidating the intricate challenges encountered in the manufacturing of transplantable *** further delve into the translational pathway from scientific research to clinical application,emphasizing the imperativeness of establishing a regulatory framework and rigorously enforcing quality-control ***,this review outlines the strategic landscape and innovative achievements of China in this field and provides a comprehensive roadmap for researchers worldwide to propel this field collectively to even greater heights.

关键词： 3D printing bioprinting Tissue engineering Regenerative medicine

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Diagnostic-free onboard battery health assessment

arXiv

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arXiv 2025年

作者： Che, Yunhong Lam, Vivek N. Rhyu, Jinwook Schaeffer, Joachim Kim, Minsu Bazant, Martin Z. Chueh, William C. Braatz, Richard D. Department of Chemical Engineering Massachusetts Institute of Technology CambridgeMA02139 United States Department of Materials Science and Engineering Stanford University StanfordCA94305 United States Applied Energy Division SLAC National Accelerator Laboratory Menlo ParkCA94025 United States Control and Cyber-Physical Systems Laboratory Technical University of Darmstadt 64289 Germany Department of Mathematics Massachusetts Institute of Technology CambridgeMA02139 United States Department of Energy Science and Engineering Stanford University StanfordCA94305 United States

Diverse usage patterns induce complex and variable aging behaviors in lithium-ion batteries, complicating accurate health diagnosis and prognosis. Separate diagnostic cycles are often used to untangle the battery’s current state of health from prior complex aging patterns. However, these same diagnostic cycles alter the battery’s degradation trajectory, are time-intensive, and cannot be practically performed in onboard applications. In this work, we leverage portions of operational measurements in combination with an interpretable machine learning model to enable rapid, onboard battery health diagnostics and prognostics without offline diagnostic testing and the requirement of historical data. We integrate mechanistic constraints within an encoder-decoder architecture to extract electrode states in a physically interpretable latent space and enable improved reconstruction of the degradation path. The health diagnosis model framework can be flexibly applied across diverse application interests with slight fine-tuning. We demonstrate the versatility of this model framework by applying it to three battery-cycling datasets consisting of 422 cells under different operating conditions, highlighting the utility of an interpretable diagnostic-free, onboard battery diagnosis and prognosis model. © 2025, CC BY.

关键词： Electronic health record

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Crucial control measures to contain China's first Delta variant outbreak

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National Science Review 2022年第4期9卷 41-50页

作者： Lei Luo Zifeng Yang Jingyi Liang Yu Ma Hui Wang Chitin Hon Mei Jiang Zhengshi Lin Wenda Guan Zhitong Mai Yongming Li Kailin Mai Zhiqi Zeng Chuanmeizi Tu Jian Song Bin Liu Yong Liu Jianfeng He Huiyuan Li Bosheng Li Hang Dong Yutian Miao Shujun Fan Lirui Fan Xingyi Liang Ke Li Chun Chen Huihong Deng Zhicong Yang Nanshan Zhong Institute of Public Health Guangzhou Medical University & Guangzhou Center for Disease Control and Prevention State Key Laboratory of Respiratory Disease National Clinical Research Center for Respiratory DiseaseGuangzhou Institute of Respiratory Healththe First Affiliated Hospital of Guangzhou Medical University Guangzhou Laboratory Bio-Island Guangzhou Key Laboratory for Clinical Rapid Diagnosis and Early Warning of Infectious Diseases State Key Laboratory of Quality Research in Chinese Medicine Macau Institute for Applied Research in Medicine and HealthMacau University of Science and Technology Macau Institute of Systems Engineering Macau University of Science and Technology Kingmed Virology Diagnostic & Translational Center Guangzhou Kingmed Center for Clinical Laboratory Co.Ltd Guangdong Center for Disease Control and Prevention Department of Urban and Rural Planning Shunde Urban and Rural Planning Information Research Center

The SARS-C oV-2 B.1.617.2（Delta） variant flared up in late May in Guangzhou,*** characteristics of Delta variant were analysed for 153 confirmed cases and two complete transmission chains with seven generations were fully presented.A rapid transmission occurred in five generations within10 *** basic reproduction number（R0） was 3.60（95% confidence interval:2.50-5.30）.After redefining the concept of close contact,the proportion of confirmed cases discovered from close contacts increased from 43% to 100%.With the usage of a yellow health code,the potential exposed individuals were self-motivated to take a nucleic acid test and regained public access with a negative testing *** the massive requirement of screening,novel facilities like makeshift inflatable laboratories were promptly set up as a vital supplement and 17 cases were found,with 1 *** dynamic adjustment of these three interventions resulted in the decline of Rt from 5.00 to 1.00 within 9 *** breaking the transmission chain and eliminating the transmission source through extending the scope of the close-contact tracing,health-code usage and mass testing,the Guangzhou D elta epidemic was effectively contained.

关键词： COVID-19 public health control measure close contact mass testing

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What Influences Intermodal Choices: Metro-Centric, Bus-Centric, Hybrid? Insights from Machine Learning Approaches

SSRN

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SSRN 2024年

作者： Ma, Xinwei Tian, Xiaolin Cui, Hongjun He, Mingjia Wang, Jianbiao Cheng, Long School of Civil and Transportation Engineering Hebei University of Technology Tianjin300401 China Institute for Dynamic Systems and Control Department of Mechanical and Process Engineering ETH Zurich Switzerland Institute of Materials and Systems for Sustainability Nagoya University Nagoya Japan Jiangsu Key Laboratory of Urban ITS School of Transportation Southeast University Nanjing China

Three types of intermodals are defined: bus-centric, metro-centric, and hybrid, each representing combinations of bus, metro, and a mix of metro and bus with other travel modes for a trip, respectively. Using the household survey from Nanjing, China, comprising 162,191 trips, we applied the multiple models to reveal the nonlinear effects of socio-demographic and travel-related attributes on intermodal travel choices. Results show that bus-centric intermodal choice accounts for 65.82% of the total among the three types. The optimal model, random forest, indicates the relative importance of travel-related, individual, and household attributes, contributing 46.46%, 31.35%, and 22.18% respectively. Non-public transit travel time demonstrates an inverted V-shaped association with bus-centric intermodal choice, with a peak at around 5 minutes. Older individuals prefer bus-centric intermodal, while younger lean towards metro-centric and hybrid intermodal. Compared to car ownership and motorcycle ownership, bike ownership and E-bike ownership exhibit relatively high impact on intermodal travel choices. © 2024, The Authors. All rights reserved.

关键词： Buses

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biobased Photothermal Responsive Shape Memory Polythioether/Mxene Nanocomposites with Self-Extinguishing Performance

SSRN

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SSRN 2024年

作者： Yang, Weijun Zhou, Wei Ding, Ning Shen, Sudan Gao, Daqian Puglia, Debora Duan, Yaqiang Xu, Pengwu Liu, Tianxi Wang, Zhenyu Ma, Piming The Key Laboratory of Synthetic and Biological Colloids Ministry of Education School of Chemical and Material Engineering Jiangnan University Wuxi214122 China State Key Laboratory of Chemical Engineering Zhejiang University Hangzhou China Department of Surgery Yale School of Medicine of Yale University New Haven United States Civil and Environmental Engineering Department Materials Engineering Center Perugia University UdR INSTM Terni05100 Italy Institute of Environmental Processes and Pollution Control School of Environment and Civil Engineering Jiangnan University Wuxi214122 China

Thermosetting shape memory polymers (TS-SMPs) have a higher shape fixity ratio (Rf) and shape recovery (Rr) due to their structure integrity and thermal stability, and the glass transition temperature (Tg) usually influences the transition temperature (Ttrans) of TS-SMPs. Therefore, it is significant to tailor the Tg range and mechanical properties for TS-SMPs. In this work, the inherently flame-retarding bio-based MXene-reinforced polythioether nanocomposites with excellent shape memory performance, driven by photothermal response, were designed. Firstly, a photopolymerizable MXene nanomonomer (MPS-MXene) was obtained by introducing 3-(methacryloxy) propyltrimethoxysilane onto the surface of the MXene monolayer. Then, the bis(4-allyl-2-methoxyphenyl) phenyl phosphonate (BEP) was synthesized by eugenol (a lignin derivative) with phenyl phosphonic dichloride. The polythioether/MXene composites (BEP-T-xM) were synthesized through in-situ thiol-ene photopolymerization of MPS-MXene, BEP, and tris[2-(3-mercaptopropionyloxy)ethyl] isocyanurate. Surprisingly, compared with neat polythioether, the Tg of BEP-T-0.2M nanocomposite increased from 19.6 to 34.6 ℃, when only 0.2 wt% MPS-MXene was added. The photothermal conversion efficiency (η=73.8%) and shape memory performance with Rr (>98%) were greatly improved. Consequently, the interesting phenomena such as "sunflowers growing towards the sunlight" and "thermal shrinkage" can be observed. Meanwhile, the tensile strength and Young's modulus increased significantly by 141% and 91%, respectively, due to the good dispersion of rigid MPS-MXene nanosheets. Furthermore, all the polythioether/MXene nanocomposites showed self-extinguishing performance. This study will provide a novel strategy for designing biobased photothermal-responsive TS-SMPs. © 2024, The Authors. All rights reserved.

关键词： Nanocomposites

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Enhanced properties of low-density polyethylene composites reinforced with Bridelia ferruginea fibers: effect of low temperature fiber acetylation

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Discover Polymers 2024年第1期1卷 1-15页

作者： Fasanya, Opeoluwa O. Obada, David O. Okoduwa, Ugochi J. Adesina, Olalekan B. Winful, Elizabeth Audu, Ephraim A. Abdulkadir, Jibrin Obidah, Timothy Y. Adamun, Simon I. Barminas, Jeffrey T. Industrial and Environmental Pollution Department National Research Institute for Chemical Technology Zaria Nigeria Department of Mechanical Engineering and Africa Centre of Excellence on New Pedagogies in Engineering Education Ahmadu Bello University Zaria Nigeria Multifunctional Materials Laboratory Shell Office in Mechanical Engineering Ahmadu Bello University Zaria Nigeria Mathematical Modelling and Intelligent Systems for Health and Environment (MISHE) Research Group School of Science Atlantic Technological University Sligo Ireland Scientific and Industrial Research Department National Research Institute for Chemical Technology Zaria Nigeria

In this study, lignocellulosic fibres were extracted from Bridelia ferruginea (BF), a shrub which can be found in sub-Saharan Africa with a view to probing the potential application of the fibres. The chemical properties of the BF were chemically modified by acetylation to evaluate the potential applications of the fibre reinforced polymer composites. The unacetylated and acetylated fibres were characterized using Scanning Electron Microscopy (SEM), Fourier Transform Infrared Spectroscopy (FTIR), X-Ray Diffraction (XRD) and Thermogravimetric Analysis (TGA) to compare thermal and crystallographic properties after acetylation over different lengths of time. The acetylated fibres with the most promising properties were used for the fabrication of a polymeric composite. The mechanical properties of the fibre-reinforced polymer composites were studied by hardness and dynamic mechanical measurements. Four types of polymeric samples were prepared for the mechanical measurements: unreinforced polymer (control) polyester, ATBF/LDPE, ACEBF3/LDPE, ACEBF/LDPE. The SEM micrographs revealed that acetylation led to defibrillation. FTIR peaks at 1250 cm−1 and 1371 cm−1 confirmed that acetylation had occurred. The fibres possessed high crystallinity index of 75% which reduced as time of acetylation increased. Acetylation at mild conditions of 70 °C for 3 h did not result in significant damage to the fibres. For the hardness measurements, the values of the micro-hardness of the composite samples increased from 0.20 GPa to 0.29 GPa. The acetylated fibres tend to further resist deformation due to its dispersion in the polymer matrix providing a stronger cross-linking effect. The properties unearthed show that BF appears to be a promising raw material for the production of polymer composites.

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Systematic Feature Design for Cycle Life Prediction of Lithium-Ion Batteries During Formation

arXiv

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arXiv 2024年

作者： Rhyu, Jinwook Schaeffer, Joachim Li, Michael L. Cui, Xiao Chueh, William C. Bazant, Martin Z. Braatz, Richard D. Department of Chemical Engineering Massachusetts Institute of Technology CambridgeMA02139 United States Control and Cyber-Physical Systems Laboratory Technical University of Darmstadt 64289 Germany Department of Materials Science and Engineering Stanford University StanfordCA94305 United States Applied Energy Division SLAC National Accelerator Laboratory Menlo ParkCA94025 United States Department of Mathematics Massachusetts Institute of Technology CambridgeMA02139 United States

Optimization of the formation step in lithium-ion battery manufacturing is challenging due to limited physical understanding of solid electrolyte interphase formation and the long testing time (∼100 days) for cells to reach the end of life. We propose a systematic feature design framework that requires minimal domain knowledge for accurate cycle life prediction during formation. Two simple Q(V ) features designed from our framework, extracted from formation data without any additional diagnostic cycles, achieved a median of 9.20% error for cycle life prediction, outperforming thousands of autoML models using pre-defined features. We attribute the strong performance of our designed features to their physical origins – the voltage ranges identified by our framework capture the effects of formation temperature and microscopic particle resistance heterogeneity. By designing highly interpretable features, our approach can accelerate formation research, leveraging the interplay between data-driven feature design and mechanistic *** Codes 15-04 Copyright © 2024, The Authors. All rights reserved.

关键词： Lithium-ion batteries

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A Koopman Operator-Based Finite Impulse Response Filter for Nonlinear systems

A Koopman Operator-Based Finite Impulse Response Filter for ...

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IEEE Conference on Decision and control

作者： Zhichao Pan Biao Huang Fei Liu Key Laboratory of Advanced Process Control for Light Industry (Ministry of Education) Institute of Automation Jiangnan University Wuxi China department of chemical and materials engineering University of Alberta Edmonton Alberta Canada

This paper proposes a novel Koopman operator-based finite impulse response (KFIR) filter for nonlinear dynamic systems. This filter is generalized from the minimum variance unbiased (MVU) FIR filter for linear systems by using a global linear approximation of the nonlinear dynamics obtained from Koopman operator theory and the extended dynamic mode decomposition (EDMD) algorithm. Based on the recursive linear model, a reduced-order FIR filtering structure is proposed, and the optimal gain is derived to minimize the trace of the estimation error covariance. Unlike traditional methods, the KFIR filter requires no prior knowledge of the initial state and fully utilizes the data of a moving horizon. Simulation results show that the proposed filter has excellent robustness against unexpected modeling uncertainties and inaccurate noise information, making it suitable for real applications.

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Evaluation of Magnet Configurations for Magnetohydrodynamic Trajectory control during Planetary Entry

Evaluation of Magnet Configurations for Magnetohydrodynamic ...

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AIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2025

作者： Fawley, Destiny M. Eggl, Siegfried Putnam, Zachary R. D’souza, Sarah Borner, Arnaud University of Illinois at Urbana-Champaign Department of Aerospace Engineering 104 S. Wright St. UrbanaIL61801 United States Johns Hopkins Applied Physics Laboratory Astrodynamics and Control Group LaurelMD20723 United States NASA Ames Research Center Entry Systems and Vehicle Development Branch Moffett FieldCA94035 United States AMA Inc. NASA Ames Research Center Thermal Protection Materials and Systems Branch MS 234-1 Moffett FieldCA94035 United States

ISBN: (纸本)9781624107238

Magnetohydrodynamics is a phenomenon that can be harnessed during planetary entry to augment aerodynamic drag and may enable higher mass payloads to safely reach the surface. The magnetohydrodynamic force is quantified over a wide range of freestream conditions using computational fluid dynamics results from a previous study. The force is calculated for an array of small electromagnets, a large non-superconducting magnet, a large superconducting magnet, and a uniform field. The superconducting magnet produces a magnetohydrodynamic force within an order of magnitude of aerodynamic drag for velocities higher than 10 km/s, indicating that it may have a reasonable impact on the trajectory for some cases. The array of small magnets and non-superconducting magnet produced a magnetohydrodynamic force that is less than 1% of the aerodynamic drag, so their magnetic fields are not strong enough to affect an entry trajectory. Additionally, the magnet placement plays an important role in magnetohydrodynamic force magnitude, with a magnet located near the shoulder producing approximately eight times more force than a magnet placed on the axis of symmetry. A mass and power budget for each magnet configuration is given assuming current state-of-the-art magnet technology. This study also discusses implementation challenges for each type of magnet on a spacecraft. © 2025, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.

关键词： Aerodynamic drag

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