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Environmentally Responsible Lightweight Passenger Vehicle design and Manufacturing

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Automotive Innovation 2023年第3期6卷 300-310页

作者： Glenn S.Daehn Katrin E.Daehn Oliver Kuttner Department of Materials Science and Engineering The Ohio State UniversityColumbusUSA Department of Materials Science and Engineering Massachusetts Institute of TechnologyCambridgeUSA Edision2 CharlottesvilleUSA

The mass reduction of passenger vehicles has been a great focus of academic research and federal policy initiatives of the United States with coordinated funding efforts and even a focus of a Manufacturing USA Institute.The potential benefit of these programs can be described as modest from a societal point of view,for example reducing vehicle mass by up to 25%with modest cost implications(under$5 per pound saved)and the ability to implement with existing manufacturing methods.Much more aggressive reductions in greenhouse gas production are necessary and possible,while delivering the same service.This is demonstrated with a higher-level design thinking exercise on an environmentally responsible lightweight vehicle,leading to the following criteria:lightweight,low aerodynamic drag,long-lived(over 30 years and 2 million miles),adaptable,electric,and used in a shared manner on average over 8 h per day.With these specifications,passenger-mile demand may be met with around 1/10 of the current fleet.Such vehicles would likely have significantly different designs and construction than incumbent automobiles.It is likely future automotive production will be more analogous to current aircraft produc-tion with higher costs per pound and lower volumes,but with dramatically reduced financial and environmental cost per passenger mile,with less material per vehicle,and far less material required in the national or worldwide fleets.Subsidiary benefits of this vision include far fewer parking lots,greater accessibility to personal transportation,and improved pedestrian safety,while maintaining a vibrant and engaging economy.The systemic changes to the business models and research and development directions(including lightweight design and manufacturing)are discussed,which could bring forth far more sustainable personal transportation.

关键词： Sustainability Personal transportation Lighgweighting design

Experimental Validation of Light Cable-Driven Elbow-Assisting Device L-CADEL design

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Journal of Bionic Engineering 2022年第2期19卷 416-428页

作者： Med Amine Laribi Marco Ceccarelli Juan Sandoval Matteo Bottin Giulio Rosati Department GMSC Pprime InstituteCNRS-University of Poitiers-ENSMAUPR 334686073 PoitiersFrance Department of Industrial Engineering University of Rome Tor Vergata00133 RomeItaly Department of Industrial Engineering University of Padova35122 PaduaItaly

This paper presents a new design of CADEL,a cable-driven elbow-assisting device,with light weighting and control improvements.The new device design is appropriate to be more portable and user-oriented solution,presenting additional facilities with respect to the original design.One of potential benefits of improved portability can be envisaged in the possibility of house and hospital usage keeping social distancing while allowing rehabilitation treatments even during a pandemic spread.Specific attention has been devoted to design main mechatronic components by developing specific kinematics models.The design process includes an implementation of specific control hardware and software.The kinematic model of the new design is formulated and features are evaluated through numerical simulations and experimental tests.An evaluation from original design highlights the proposed improvements mainly in terms of comfort,portability and user-oriented operation.

关键词： Rehabilitation robotics Medical devices design Simulations Cable-driven parallel robot Control

Performance analysis and design of loitering munitions: A comprehensive technical survey of recent developments

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Defence Technology（防务技术） 2022年第3期18卷 325-343页

作者： Mark Voskuijl Faculty of Military Sciences Netherlands DefenceAcademyDenHelderThe Netherlands

Loitering munitions are increasingly used in armed conflicts.An extensive database of loitering munitions is developed based on information available in the public domain.This database includes dimensions,weights,and performance parameters such as flight endurance and communication range.Based upon this dataset,6 categories of loitering munitions are identified and statistical trends in the form of equations are provided for each category.The statistical trends are supported by aircraft performance theory tailored to loitering munitions applications.Altogether,the combination of the database,statistical trends and aircraft performance theory can be used to analyse the flight performance and design considerations of new loitering munitions of which only limited non-technical information is available in the public domain such as pictures and news articles.Based on the statistical trends and aircraft performance theory it is concluded that for long range applications,the preferred design solution is the conventional configuration.The cruciform configuration is beneficial in case precision flight path control is of prime importance.The tandem wing configuration combines the benefits of a canister launch and relatively high aspect ratio wings suitable for long range flight.Finally,the delta wing design provides a large internal volume and a high terminal attack airspeed.Two example case studies are included to illustrate the flight performance capabilities of two types of loitering munitions used in the current conflict in Yemen(a long range conventional design and a delta wing configuration).

关键词： Loitering munition Unmanned aerial vehicle Flight performance design

design and regulation of the surface and interfacial behavior of protein molecules

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Chinese Journal of Chemical Engineering 2020年第11期28卷 2837-2847页

作者： Qianqian Hou Nanxing Li Yuanyuan Chao Shihao Li Lin Zhang Department of Biochemical Engineering and Key Laboratory of Systems Bioengineering of the Ministry of Education School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300350China

Surface and interfacial behavior of protein molecules are crucial for the protein function involved in many biochemical processes and biomedical products such as enzyme design,bio-separation,drug design and delivery.This article is devoted to an overview of design and regulation of the surface and interfacial behavior of protein molecules.The improvement of enzyme surface such as the directed evolution and the rational design of enzymes is introduced at first,followed by the rational design of protein interface for the protein assembly.Thereafter,the design of micro-environment and ligands are described as two examples for the design guided by protein surface.Then the design of protein surface and interface with the help of artificial intelligence will be discussed.

关键词： Protein Enzyme Surface Interface design Artificial intelligence

design and implementation of various datapath architectures for the ANU lightweight cipher on an FPGA

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Frontiers of Information Technology & Electronic Engineering 2020年第4期21卷 615-628页

作者： Vijay DAHIPHALE Gaurav BANSOD Ankur ZAMBARE Narayan PISHAROTY Pune Institute of Computer Technology Pune 411043India Iziel Healthcare Pvt.Ltd. Pune 411028India

Since the dawn of the Internet of Things(IoT),data and system security has been the major concern for developers.Because most IoT devices operate on 8-bit controllers with limited storage and computation power,encryption and decryption need to be implemented at the transmitting and receiving ends,respectively,using lightweight ciphers.We present novel architectures for hardware implementation for the ANU cipher and present results associated with each architecture.The ANU cipher is implemented at 4-,8-,16-,and 32-bit datapath sizes on four different field-programmable gate array(FPGA)platforms under the same implementation condition,and the results are compared on every performance metric.Unlike previous ANU architectures,the new architectures have parallel substitution boxes(S-boxes)for high throughput and hardware optimization.With these different datapath designs,ANU cipher proves to be the obvious choice for implementing security in extremely resourceconstrained systems.

关键词： Lightweight cryptography Internet of Things(IoT) Embedded security Encryption FPGA Datapath design

design and management of lithium-ion batteries:A perspective from modeling,simulation,and optimization

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Chinese Physics B 2020年第6期29卷 1-16页

作者：王乾坤沈佳妮贺益君马紫峰 Department of Chemical Engineering Shanghai Jiao Tong UniversityShanghai 200240China

Although the lithium-ion batteries(LIBs) have been increasingly applied in consumer electronics, electric vehicles,and smart grid, they still face great challenges from the continuously improving requirements of energy density, power density, service life, and safety. To solve these issues, various studies have been conducted surrounding the battery design and management methods in recent decades. In the hope of providing some inspirations to the research in this field, the state of the art of design and management methods for LIBs are reviewed here from the perspective of process systems engineering. First, different types of battery models are summarized extensively, including electrical model and multi-physics coupled model, and the parameter identification methods are introduced correspondingly. Next, the model based battery design methods are reviewed briefly on three different scales, namely, electrode scale, cell scale, and pack scale. Then, the battery model based battery management methods, especially the state estimation methods with different model types are thoroughly compared. The key science and technology challenges for the development of battery systems engineering are clarified finally.

关键词： lithium-ion batteries modeling design management

design and Optimization of VLC Enabled Data Center Network

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Tsinghua Science and Technology 2020年第1期25卷 81-92页

作者： Yudong Qin Deke Guo Xu Lin Geyao Cheng Science and Technology on Information Systems Engineering Laboratory National University of Defense TechnologyChangsha 410073China School of Computer Science and Technology Xidian UniversityXi’an 710000China

Visible-Light Communication(VLC) has the potential to provide dense and fast connectivity at low cost. In this paper we propose SFNet, a novel VLC-enabled hybrid data center network that extends the design of wireless Data Center Networks(DCNs) into three further dimensions:(1) fully wireless at the inter-rack level;(2) no need for a centralized control mechanism on wireless links;and(3) no need for any infrastructure-level alterations to data centers. Previous proposals typically cannot realize these three rationales simultaneously. To achieve this vision,the proposed SFNet augments fat-tree by organizing all racks into a wireless small-world network via VLC links. The use of VLC links eliminates hierarchical switches and cables in the wireless network, and thus reduces hardware investment and maintenance costs. To fully exploit the benefits of the topology of SFNet, we further propose its topology design and optimization method, routing scheme, and online flow scheduling algorithm. Comprehensive experiments indicate that SFNet exhibits good topological properties and network performance.

关键词： Data Center Network(DCN) Visible Light Communication(VLC) topology design

design of Self‑Reconfigurable Multiarm Robot Mechanism Based on Deployable Kinematic Chains

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Chinese Journal of Mechanical Engineering 2020年第5期33卷 34-50页

作者： Fu‑Qun Zhao Sheng Guo Hai‑Jun Su Hai‑Bo Qu Ya‑Qiong Chen School of Mechanical Electronic and Control EngineeringBeijing Jiaotong UniversityBeijing 100044China

As the structures of multiarm robots are serially arranged,the packaging and transportation of these robots are often inconvenient.The ability of these robots to operate objects must also be improved.Addressing this issue,this paper presents a type of multiarm robot that can be adequately folded into a designed area.The robot can achieve different operation modes by combining different arms and objects.First,deployable kinematic chains(DKCs)are designed,which can be folded into a designated area and be used as an arm structure in the multiarm robot mechanism.The strategy of a platform for storing DKCs is proposed.Based on the restrictions in the storage area and the characteristics of parallel mechanisms,a class of DKCs,called base assembly library,is obtained.Subsequently,an assembly method for the synthesis of the multiarm robot mechanism is proposed,which can be formed by the connection of a multiarm robot mechanism with an operation object based on a parallel mechanism structure.The formed parallel mechanism can achieve a reconfigurable characteristic when different DKCs connect to the operation object.Using this method,two types of multiarm robot mechanisms with four DKCs that can switch operation modes to perform different tasks through autonomous combination and release operation is proposed.The obtained mechanisms have observable advantages when compared with the traditional mechanisms,including optimizing the occupied volume during transportation and using parallel mechanism theory to analyze the switching of operation modes.

关键词： design Multiarm robot Deployable kinematic chain Parallel mechanism Motion set

design of high performance nanozymes: a single-atom strategy

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Science China(Life Sciences) 2019年第5期62卷 710-712页

作者： Shichao Lin Hui Wei Department of Biomedical Engineering College of Engineering and Applied Sciences Nanjing National Laboratory of MicrostructuresJiangsu Key Laboratory of Artificial Functional Materials Nanjing University State Key Laboratory of Analytical Chemistry for Life Science and State Key Laboratory of Coordination Chemistry School of Chemistry and Chemical Engineering Nanjing University

Nanozymes, nanomaterials with enzyme-like characteristics,are emerging as novel artificial enzymes (Gao et al., 2007;Manea et al., 2004;Yan, 2018). They are superior to natural enzymes in many ways, such as higher sta... 详细信息

关键词： a single-atom strategy design of high performance nanozymes NC Zn