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8th International Conference on Electromechanical control Technology and Transportation, ICECTT 2023

作者： Shen, Chuanliang Zhang, Longxu Du, Yingchen Yu, Jing Yue, Yubing State Key Laboratory of Automotive Simulation and Control Jilin University 5988 Renmin Street Changchun130025 China

ISBN: (纸本)9781510668331

Aiming at the problems of chemical pollution and the inability to reuse the initiation method adopted by the traditional hood pop-up mechanism, a new hood pop-up mechanism that uses shape memory alloy (SMA) as the trigger power element is proposed to realize the improvement of the hood pop-up mechanism. High-speed triggering and reversible recovery, the mechanism is simple in structure, quick in response, and can be manually recovered after being bounced, which can be adapted to various car models. After the sensor is triggered, the supercapacitor heated the SMA element to drive it at a high speed. The locking mechanism is activated to release the energy stored in the spring, and the engine hood is lifted and limited after reaching a certain height. After the design of the engine hood lifting mechanism and the determination of parameters, the spring stiffness that meets the pedestrian protection requirements is determined to be 11000N/m by the numerical simulation method. Dynamics modeling and simulation were carried out to study the influence of different parameters on the bouncing response. Experimental results show that when the spring stiffness increases from 2000N/m to 5000N/m, the release time decreases from 19ms to 12ms, and the time needed to spring up to 100mm height decreases from 136mm to 84mm. The response speed of the spring mechanism is accelerated, which is consistent with the simulation results. © 2023 SPIE.

关键词： Automobile drivers

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RECURRENCE AND CHAOS

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UPB Scientific Bulletin, Series A: Applied Mathematics and Physics 2024年第4期86卷 77-90页

作者： Wang, Nan Jiao, Lixin Wang, Lidong Shi, Shaoyun School of Mathematics Jilin University Changchun130012 China School of Disciplinary Basics and Applied Statistics Zhuhai College of Science and Technology Zhuhai519041 China School of Mathematics and State Key Laboratory of Automotive Simulation and Control Jilin University Changchun130012 China

Assume that (Σ2, ρ) is a one sided symbolic space, σ is a sub-shift on Σ2. In this paper, we proved that there exists T ⊂ P QW (σ) ⊂ Σ2 such that σ |T is R − T chaos, Martelli chaos, distributional chaos, weakly mixing, Xiong-chaos and distributional chaos in a sequence. As an application, we prove that chaos occurs on recurrent sets in exchange economic systems. © 2024, Politechnica University of Bucharest. All rights reserved.

关键词： Quantum chaos

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Non-layer-transformed Mn_(3)O_(4) cathode unlocks optimal aqueous magnesium-ion storage via synergizing amorphous ion channels and grain refinement

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Journal of Energy Chemistry 2022年第5期31卷 42-48页

作者： Zhongyu Pan Tingting Qin Wei Zhang Xianyu Chu Taowen Dong Nailin Yue Zizhun Wang Weitao Zheng State Key Laboratory of Automotive Simulation and Control School of Materials Science&EngineeringKey Laboratory of Mobile Materials MOEElectron Microscopy Centerand International Center of Future ScienceJilin UniversityChangchun 130012JilinChina

Aqueous rechargeable magnesium ion batteries(ARMBs) have obtained more attention due to the twoelectrons transfer nature, low cost and safety. However, the scarcity of cathode materials seriously hinders the development of ARMBs because of the unfavorable strong interaction between Mg^(2+) and cathode material. Herein, we choose a pre-treated spinel Mn_(3)O_(4) cathode for aqueous Mg^(2+) storage. The pretreatment in Na_(2)SO_(4) solution induces the grain refinement decorated with tortuous amorphous ion diffusion channels, facilitating the production of electrochemical reaction active sites and the diffusion of Mg^(2+), respectively, which achieve a(sub-)surface pseudocapacitance reaction between Mn(Ⅱ) and Mn(Ⅲ). As a result, the pre-treated Mn_(3)O_(4) cathode exhibits a package of optimal performances, i.e., a capacity of 98.9 m Ah g^(-1) and a high capacity retention rate of 99.4% after 2000 cycles. To the best of our knowledge, our work not only provides a new reaction mechanism of spinelMn_(3)O_(4) in aqueous batteries system,but also affords a high cycle stability electrode material for rechargeable Mg^(2+) energy storage.

关键词： Spinel Mn3O4 Grain refinement Amorphous ARMBs

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MOFs fertilized transition-metallic single-atom electrocatalysts for highly-efficient oxygen reduction: Spreading the synthesis strategies and advanced identification

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Journal of Energy Chemistry 2022年第4期31卷 391-422页

作者： Kexin Song Yu Feng Wei Zhang Weitao Zheng State Key Laboratory of Automotive Simulation and Control School of Materials Science&EngineeringKey Laboratory of Automobile Materials MOEElectron Microscopy Centerand International Center of Future ScienceJilin UniversityChangchun 130012JilinChina

Metal-organic frameworks(MOFs) have been widely used in oxygen reduction reaction(ORR) of fuel cells and metal-air batteries, attributed to their unique structures and compositions. Recently, the preparation of transition-metallic single-atom electrocatalysts(TM-SACs) using MOFs as precursors or templates has made great progress. Herein, the development history of SACs prepared based on MOFs and their characterization are overviewed firstly, and then several strategies are summarized for preparing TM-SACs using MOFs and further modification. Finally, the challenges and opportunities confronted by TM-SACs are fully discussed. Consequently, our work can guide the realization of TM-SACs abundant with high activity, high loading and high stability.

关键词： Transition-metallic single-atom electrocatalysts(TM-SACs) Oxygen reduction reaction(ORR) Metal-organic frameworks(MOFs) Electron microscopy Spectroscopy

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A Repetitive Motion Obstacle Avoidance Planning Scheme for Omnidirectional Mobile Manipulators with Noise Suppression Capability

A Repetitive Motion Obstacle Avoidance Planning Scheme for O...

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2023 China Automation Congress, CAC 2023

作者： Shi-Jun, Tang Yun-Feng, Hu Zhong-Bo, Sun Chong, Zhang Yu-Zhe, Fei Xing-Tian, Xiao Jilin University College of Communication Engineering Jilin University State Key Laboratory of Automotive Simulation and Control Changchun China Changchun University of Technology Intelligent Rehabilitation Engineering Technology Laboratory Department of Control Engineering China

ISBN: (纸本)9798350303759

Obstacle avoidance is essential for an omnidirectional mobile robotic arm (OMRA) to accomplish a given task in a complex environment. To make OMRA accomplish repetitive motion, obstacle avoidance, and trajectory tracking tasks in complex dynamic environments with the presence of obstacles and external disturbances, a new noise-suppressed repetitive motion obstacle avoidance (NSRMOA) scheme is proposed. As established previously many OMRA motion planning assumes that the simulation is noise free. However, noise interference may prevent OMRA from accomplishing repetitive motion, obstacle avoidance, and trajectory tracking tasks, which may lead to task failure. The proposed the NSRMOA scheme with intrinsic noise suppression can solve external noise interference, so that the OMRA can accomplish the repetitive motion, obstacle avoidance and trajectory tracking tasks in the presence of external noise interference. Finally, the optimal solution of the NSRMOA scheme can be effectively obtained by using recurrent neural network (RNN). The effectiveness and accuracy of the scheme are verified by examples and comparisons. © 2023 IEEE.

关键词： Robotic arms

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Microdynamic modulation through Pt–O–Ni proton and electron“superhighway”for pH-universal hydrogen evolution

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Journal of Energy Chemistry 2025年第2期101卷 808-815,I0018页

作者： Dewen Wang Yuting Chen Bohan Yao Tian Meng Yanchao Xu Dongxu Jiao Zhicai Xing Xiurong Yang State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022JilinChina University of Science and Technology of China Hefei 230026AnhuiChina Department of Chemistry Shenzhen Grubbs Institute and Guangdong Provincial Key Laboratory of Energy Materials for Electric PowerSouthern University of Science and TechnologyShenzhen 518055GuangdongChina State Key Laboratory of Automotive Simulation and Control School of Materials Science and EngineeringJilin UniversityChangchun 130012jilinChina

Optimizing the microdynamics in alkaline and neutral conditions is a significant but challenging task in developing pH-universal hydrogen evolution(HER)***,a unique Pt-O-Ni bridge has been constructed to alter the coordination and electronic environment between Pt nanoparticles(Pt_n)and nickel metaphosphate(NPO)substrate(Pt-NPO).Sufficient electron transfer from NPO to Pt_n to maintain an electron-rich environment and a low valence state of Pt_***,H*is produced from the H_(2)O dissociation on Ni site and then spillover toward Pt sites to bind into H_(2),which makes up for the insufficient H_(2)O dissociation ability of Pt in Volmer ***-NPO exhibits long-term stability and only need the overpotentials of 22.3,33.0 and 30.5 mV to attain 10 mA cm^(-2)in alkaline,neutral and acidic media,*** anion-exchange membrane(AEM)water electrolyzer catalyzed by Pt-NPO shows high water electrolysis performance that a cell voltage of 1.73 V is needed to obtain the current density of500 mA cm^(-2)in 1 M KOH at 80℃,at the same time maintains good stability for 350 *** regulation strategy proposed in this work is helpful for the design and synthesis of highly efficient pH-universal HER electrocatalysts.

关键词： Hydrogen evolution reactions pH-universal HER electrocatalysts Metal-support interactions Microdynamics Atomic and electronic regulation

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Analysis of the Game-Based Human-Machine Co-steering control on Low-Adhesion Road Surfaces

Analysis of the Game-Based Human-Machine Co-steering Control...

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SAE 2023 Intelligent Urban Air Mobility Symposium, IUAM 2023

作者： Guo, Hongyan Hu, Shibo Shi, Wanqing Liu, Jun The State Key Laboratory of Automotive Simulation and Contro China Jilin University College of Communication Engineering China Jilin University China

With the progressing autonomy of driving technology, machine is assuming greater responsibility for driving tasks to enhance safety. Leveraging this potential, this paper introduces a novel human-machine co-steering control strategy based on model predictive control. The strategy is designed to address the difficulties faced by drivers when driving on surfaces with low adhesion. Firstly, the proposed strategy utilizes a parallel human-machine co-steering framework with a weight allocation concept between the controller and the driver. Moreover, the nonlinear controller dynamics model and linear driver dynamics model are developed to characterize the interaction behaviors between human and machine under low-adhesion road surface conditions. And a nonlinear game optimization problem is formulated to capture the cooperative interaction relationship between human and machine. Finally, to solve the nonlinear game optimization problem, piecewise affine linearization method is employed to derive the analytical solution of the human-machine co-steering optimal strategy. This approach enables the determination of the optimal co-steering control strategy for both human and machine components under low-adhesion road surface conditions. Experimental results demonstrate that assigning a higher driving weight to either the controller or the driver leads to increased human-machine driving conflicts. Conversely, assigning equal driving weights to both the controller and the driver minimizes the human-machine driving conflict, where the driver has virtually no influence on the driving of the intelligent vehicle. Furthermore, the human-machine driving conflict is smaller in scenarios where the driving weights are equal. The results show that the proposed method provides an effective assistance for drivers on low-adhesion surfaces. © IUAM 2023.

关键词： controllers

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Review on laser directed energy deposited aluminum alloys

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International Journal of Extreme Manufacturing 2024年第2期6卷 84-131页

作者： Tian-Shu Liu Peng Chen Feng Qiu Hong-Yu Yang Nicholas Tan Yew Jin Youxiang Chew Di Wang Ruidi Li Qi-Chuan Jiang Chaolin Tan Singapore Institute of Manufacturing Technology(SIMTech) Agency for ScienceTechnology and Research(A∗STAR)5 Cleantech LoopSingapore 636732Singapore State Key Laboratory of Automotive Simulation and Control Jilin UniversityChangchun 130025People’s Republic of China Key Laboratory of Automobile Materials Ministry of Education and Department of Materials Science and EngineeringJilin UniversityChangchun 130025People’s Republic of China School of Mechanical&Automotive Engineering South China University of TechnologyGuangzhou 510640People’s Republic of China State Key Laboratory of Powder Metallurgy Central South UniversityChangsha 410083People’s Republic of China

Lightweight aluminum(Al)alloys have been widely used in frontier fields like aerospace and automotive industries,which attracts great interest in additive manufacturing(AM)to process high-value Al *** a mainstream AM technique,laser-directed energy deposition(LDED)shows good scalability to meet the requirements for large-format component manufacturing and ***,LDED Al alloys are highly challenging due to their inherent poor printability(*** laser absorption,high oxidation sensitivity and cracking tendency).To further promote the development of LDED high-performance Al alloys,this review offers a deep understanding of the challenges and strategies to improve printability in LDED Al *** porosity,cracking,distortion,inclusions,element evaporation and resultant inferior mechanical properties(worse than laser powder bed fusion)are the key challenges in LDED Al *** parameter optimizations,in-situ alloy design,reinforcing particle addition and field assistance are the efficient approaches to improving the printability and performance of LDED Al *** underlying correlations between processes,alloy innovation,characteristic microstructures,and achievable performances in LDED Al alloys are *** benchmark mechanical properties and primary strengthening mechanism of LDED Al alloys are *** review aims to provide a critical and in-depth evaluation of current progress in LDED Al *** opportunities and perspectives in LDED high-performance Al alloys are also outlined.

关键词： additive manufacturing laser directed energy deposition(LDED) aluminum alloys printability aluminum matrix composite auxiliary fields mechanical properties

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Atomic Dispersed Hetero‑Pairs for Enhanced Electrocatalytic CO_(2)Reduction

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Nano-Micro Letters 2024年第1期16卷 55-67页

作者： Zhaoyong Jin Meiqi Yang Yilong Dong Xingcheng Ma Ying Wang Jiandong Wu Jinchang Fan Dewen Wang Rongshen Xi Xiao Zhao Tianyi Xu Jingxiang Zhao Lei Zhang David J.Singh Weitao Zheng Xiaoqiang Cui State Key Laboratory of Automotive Simulation and Control School of Materials Science and EngineeringKey Laboratory of Automobile Materials of MOEElectron Microscopy CenterJilin UniversityChangchun 130012People’s Republic of China Key Laboratory of Photonic and Electronic Bandgap Materials Ministry of Educationand College of Chemistry and Chemical EngineeringHarbin Normal UniversityHarbin 150025People’s Republic of China College of Chemistry Jilin UniversityChangchun 130012People’s Republic of China Department of Physics and Astronomy and Department of Chemistry University of MissouriColumbiaMO 65211USA

Electrochemical carbon dioxide reduction reaction(CO_(2)RR)involves a variety of intermediates with highly correlated reaction and ad-desorption energies,hindering optimization of the catalytic *** example,increasing the binding of the*COOH to the active site will generally increase the*CO desorption *** this relationship may be expected to dramatically improve the intrinsic activity of CO_(2)RR,but remains an unsolved ***,we addressed this conundrum by constructing a unique atomic dispersed hetero-pair consisting of Mo-Fe di-atoms anchored on N-doped carbon *** system shows an unprecedented CO_(2)RR intrinsic activity with TOF of 3336 h−1,high selectivity toward CO production,Faradaic efficiency of 95.96%at−0.60 V and excellent *** calculations show that the Mo-Fe diatomic sites increased the*COOH intermediate adsorption energy by bridging adsorption of*COOH *** the same time,d-d orbital coupling in the Mo-Fe di-atom results in electron delocalization and facilitates desorption of*CO ***,the undesirable correlation between these steps is *** work provides a promising approach,specifically the use of di-atoms,for breaking unfavorable relationships based on understanding of the catalytic mechanisms at the atomic scale.

关键词： CO_(2)reduction reaction Atomic dispersed catalyst Hetero-diatomic pair Ad-desorption energy Linear scaling relation

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Combined Estimation of Vehicle Dynamic state and Inertial Parameter for Electric Vehicles Based on Dual Central Difference Kalman Filter Method

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Chinese Journal of Mechanical engineering 2023年第4期36卷 339-354页

作者： Xianjian Jin Junpeng Yang Liwei Xu Chongfeng Wei Zhaoran Wang Guodong Yin School of Mechatronic Engineering and Automation Shanghai UniversityShanghai 200072China State Key Laboratory of Automotive Simulation and Control Jilin UniversityChangchun 130025China School of Mechanical Engineering Southeast UniversityNanjing 211189China Mechanical and Construction Engineering Northumbria UniversityNewcastle NE18STUK

Distributed drive electric vehicles(DDEVs)possess great advantages in the viewpoint of fuel consumption,environment protection and traffic *** the effects of inertial parameter variation in DDEV control system become much more pronounced due to the drastic reduction of vehicle weights and body size,and inertial parameter has seldom been tackled and systematically *** paper presents a dual central difference Kalman filter(DCDKF)where two Kalman filters run in parallel to simultaneously estimate vehicle different dynamic states and inertial parameters,such as vehicle sideslip angle,vehicle mass,vehicle yaw moment of inertia,the distance from the front axle to centre of *** proposed estimation method only integrates and utilizes real-time measurements of hub torque information and other in-vehicle sensors from standard *** four-wheel nonlinear vehicle dynamics estimation model considering payload variations,Pacejka tire model,wheel and motor dynamics model is developed,the observability of the DCDKF observer is analysed and derived via Lie derivative and differential geometry *** address system nonlinearities in vehicle dynamics estimation,the DCDKF and dual extended Kalman filter(DEKF)are also investigated and *** with various maneuvers are carried out to verify the effectiveness of the proposed method using Matlab/*** results show that the proposed DCDKF method can effectively estimate vehicle dynamic states and inertial parameters despite the existence of payload variations and variable driving *** research provides a boot-strapping procedure which can performs optimal estimation to estimate simultaneously vehicle system state and inertial parameter with high accuracy and real-time ability.

关键词： Distributed drive Electric vehicle state observation Inertial parameter Dual central difference Kalman filter

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