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ESTIMATION METHOD ON THE BATTERY STATE OF CHARGE FOR HYBRID ELECTRIC VEHICLE

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Chinese Journal of Mechanical Engineering 2008年第3期21卷 20-25页

作者： QIANG Jiaxi ao Guoqiang yang Lin School of Mechanical Engineering Shanghai Jiaotong University Shanghai 200030 China

A combined algorithm for battery state of charge （SOC） estimation is proposed to solve the critical issue of hybrid electric vehicle （HEV）. To obtain a more accurate SOC, both coulomb-accumulation and battery resistance-capacitor （RC） model are weighted combined to compensate the deficiencies of individual methods. In order to solve the key issue of coulomb-accumulation, the battery thermal model is used. Based on the principle of energy conservation, the heat generated from battery charge and discharge process is converted into the equivalent electricity to calculate charge and discharge efficiency under variable current. The extended Kalman filter （EKF） as a closed loop algorithm is applied to estimate the parameters of resistance-capacitor model. The input variables do not increase much computing difficulty. The proposed combined algorithm is implemented by adjusting the weighting factor of coulomb- accumulation and resistance-capacitor model. In the end, four different methods including Ah-efficiency, Ah-Equip, RC-SOC and Combined-SOC are compared in federal testing procedure （FTP） drive cycle. The experiment results show that the proposed method has good robustness and high accuracy which is suitable for HEV application.

关键词： State of charge Coulomb-accumulation Resistance-capacitor modelHybrid electric vehicle

Energy-efficient recovery of tetrahydrofuran and ethyl acetate by triple-column extractive distillation:entrainer design and process optimization

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Frontiers of Chemical Science and Engineering 2022年第2期16卷 303-315页

作者： ao yang yang Su Tao Shi Jingzheng Ren Weifeng Shen Teng Zhou School of Chemistry and Chemical Engineering Chongqing UniversityChongqing 401331China Department of Industrial and Systems Engineering The Hong Kong Polytechnic UniversityHong KongChina School of Intelligent Technology and Engineering Chongqing University of Science&TechnologyChongqing 401331China Process Systems Engineering Otto-von-Guericke University MagdeburgD-39106 MagdeburgGermany Process Systems Engineering Max Planck Institute for Dynamics of Complex Technical SystemsD-39106 MagdeburgGermany

An energy-efficient triple-column extractive distillation process is developed for recovering tetrahydrofuran and ethyl acetate from industrial *** process development follows a rigorous hierarchical design procedure that involves entrainer design,thermodynamic analysis,process design and optimization,and heat *** computer-aided molecular design method is firstly used to find promising entrainer candidates and the best one is determined via rigorous thermodynamic ***,the direct and indirect triple-column extractive distillation processes are proposed in the conceptual design *** two extractive distillation processes are then optimized by employing an improved genetic ***,heat integration is performed to further reduce the process energy *** results indicate that the indirect extractive distillation process with heat integration shows the highest performance in terms of the process economics.

关键词： extractive distillation solvent selection conceptual design process optimization heat integration

Extractive distillation: Advances in conceptual design, solvent selection,and separation strategies

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Chinese Journal of Chemical Engineering 2019年第6期27卷 1247-1256页

作者： Shirui Sun Liping Lü ao yang Shun'an Wei Weifeng Shen School of Chemistry and Chemical Engineering Chongqing UniversityChongqing 400044China School of Chemistry and Chemical Engineering Yangtze Normal UniversityChongqingFuling 408100China Collaborative Innovation Center for Green Development in Wuling Moutain Area Yangtze Normal UniversityChina

Extractive distillation(ED) is one of the most promising approaches for the separation of the azeotropic or closeboiling mixtures in the chemical industry. The purpose of this paper is to provide a broad overview of the recent development of key aspects in the ED process involving conceptual design, solvent selection, and separation strategies. To obtain the minimum entrainer feed flow rate and reflux ratio for the ED process, the conceptual design of azeotropic mixture separation based on a topological analysis via thermodynamic feasibility insights involving residue curve maps, univolatility lines, and unidistribution curves is presented. The method is applicable to arbitrary multicomponent mixtures and allows direct screening of design alternatives. The determination of a suitable solvent is one of the key steps to ensure an effective and economical ED process. Candidate entrainers can be obtained from heuristics or literature studies while computer aided molecular design(CAMD) has superiority in efficiency and reliability. To achieve optimized extractive distillation systems, a brief review of evaluation method for both entrainer design and selection through CAMD is presented. Extractive distillation can be operated either in continuous extractive distillation(CED) or batch extractive distillation(BED), and both modes have been well-studied depending on the advantages in flexibility and low capital costs. To improve the energy efficiency, several configurations and technological alternatives can be used for both CED and BED depending on strategies and main azeotropic feeds. The challenge and chance of the further ED development involving screening the best potential solvents and exploring the energy-intensive separation strategies are discussed aiming at promoting the industrial application of this environmentally friendly separation technique.

关键词： Extractive distillation Separation strategies Solvent selection Conceptual design

Multi-person vision tracking approach based on human body localization features

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Advances in Manufacturing 2021年第4期9卷 496-508页

作者： ao-Lei yang Hai-Yan Ren Min-Rui Fei Wasif Naeem School of Mechatronic Engineering and Automation Shanghai UniversityShanghai 200444People’s Republic of China School of Electronics Electrical Engineering and Computer ScienceQueen’s University BelfastBelfast BT71NNNorthern IrelandUK

This paper presents a multi-person vision tracking approach based on human body localization features to address the problem of interactive object localization and tracking in a home monitoring ***,the human body localization model is used to obtain the 3D position of the human body,which is then used to construct the human body motion model based on the Kalman filter *** the same time,the human appearance model is constructed by fusing human color features and features of the histogram of oriented gradient to better characterize the human ***,the human body observation model is constructed based on the human body motion model and appearance model to measure the similarities between the human body state sequence in the historical frame and the human body observation result in the current frame,and the cost matrix is then ***,the Hungarian maximum matching algorithm is employed to match each human body in the current and historical frames,and the exception detection mechanism is simultaneously constructed to further reduce the probability of human tracking and matching ***,a multi-person vision tracking verification platform was constructed,and the achieved average accuracy was 96.6%in the case of human body overlapping,occlusion,disappearance,and appearance;this verifies the feasibility and effectiveness of the proposed method.

关键词： Multi-person vision tracking Human body positioning Motion model Body observation model

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需求不确定情况下供应链供应中断的恢复策略

南宁师范大学学报（自然科学版） 2025年第1期42卷 59-70页

作者：贺世红杨敖刘成华南宁师范大学物流管理与工程学院广西南宁530100 成都信息工程大学物流学院四川成都610225

当面临需求不确定和供应中断等突发事件时,优先恢复供应链上关键节点的运行对于供应链快速恢复正常运行至关重要。通过引入多源采购的方式来提升供应链的韧性,即由2个制造商、1个批发商和2个零售商构成需求不确定的三级供应链,将供应链... 详细信息

当面临需求不确定和供应中断等突发事件时,优先恢复供应链上关键节点的运行对于供应链快速恢复正常运行至关重要。通过引入多源采购的方式来提升供应链的韧性,即由2个制造商、1个批发商和2个零售商构成需求不确定的三级供应链,将供应链中断程度量化并融入供应链决策中,构建需求不确定情况下供应中断的供应链系统动力学模型,探索供应链上不同节点中断引起的关键因素变化以及不同节点同时发生中断时优先恢复关键节点的策略。研究发现,供应链上无论哪个节点中断,都会对供应链需求满足率和总利润造成负面影响。当批发商和制造商发生相同程度的供应中断时:若供应链的目标是最大化需求满足率,则应优先恢复下游节点企业,尤其是零售商的库存;若供应链的目标是利润最大化,在完全中断的情况下,应优先恢复上游节点企业,特别是批发商的原材料库存;在部分中断的情况下,仍应优先恢复下游节点企业。研究能为供应链管理者提供宝贵的决策支持,在面对突发事件时制定更有效的恢复策略,从而提高供应链的整体韧性和应对能力。

关键词：需求不确定供应链韧性供应中断系统动力学下游企业

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Real-time predictive sliding mode control method for AGV with actuator delay

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Advances in Manufacturing 2019年第4期7卷 448-459页

作者： Zhi Chen Jian Fu Xiao-Wei Tu ao-Lei yang Min-Rui Fei School of Mechatronic Engineering and Automation Shanghai UniversityShanghai 200444People's Republic of China College of Energy and Power Engineering Nanjing University of Science and TechnologyNanjing 210094People's Republic of China

In this paper,a predictive sliding mode control method based on multi-sensor fusion is proposed to solve the problem of insufficient accuracy in trajectory tracking caused by actuator *** controller,based on the kinematics model,uses an inner and outer two-layer structure to achieve decoupling of position control and heading control.A reference positional change rate is introduced into the design of controller,making the automatic guided vehicle(AGV)capable of real-time predictive control ability.A stability analysis and a proof of predictive sliding mode control theory are *** experimental results show that the new control algorithm can improve the performance of the AGV controller by referring to the positional change rate,thereby improving the AGV operation without derailing.

关键词： Predictive sliding mode control-Multi-sensor fusion Trajectory tracking Real-time decoupling

Review on in situ Isotopic Analysis by LA-MC-ICP-MS

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Journal of Earth Science 2023年第6期34卷 1663-1691页

作者： Jie Lin ao yang Ran Lin Ji Mao Zhaochu Hu Yongsheng Liu State Key Laboratory of Geological Processes and Mineral Resources China University of GeosciencesWuhan 430074China Faculty of Materials Science and Chemistry China University of GeosciencesWuhan 430078China

The method of LA-MC-ICP-MS has become one choice for the analysis of many isotopic systems due to its relatively low cost,high analysis speed,high spatial resolution,and low matrix ***,there are still many challenges in the accuracy,precision,and spatial resolution of in situ isotopic composition determination by LA-MC-ICP-MS,which mainly include:(1)how to improve instrument sensitivity,further improve the spatial resolution,and achieve simultaneous determination of isotopes,multiple isotopes,or isotopes with trace elements in low-content samples?(2)how to deduct and correct interference to improve the accuracy of isotopic determination?(3)how to correct isotope fractionation?(4)how to reduce the matrix effect of isotopes?how to develop matrix-matched reference materials?and(5)how to achieve non-matrix-matched correction of isotopes?The high-sensitivity cone combinations,gas mixture,shield torch,and reasonable detector array can be applied to improve the elemental *** interferences include the background interference and the interferences from the matrix elements(the isobaric interference,the polyatomic interference,and doubly charged ions interference).To reduce or even eliminate the interference,commonly used methods including interference elimination,background correction,and interference correction by evaluating with an interference-free *** fractionation correction mainly involves external standard calibration and internal and pseudo-internal standard *** non-matrix matched calibration,many methods can be applied,such as the femtosecond laser,line scan,low laser energy,wet plasma condition,optical setup below the sample surface,and matching the intensity of the sample and *** this review,we systematically summarized the above challenges and solutions to promote the study and application of LA-MC-ICP-MS in isotopic determination.

关键词： LA-MC-ICP-MS isotopic determination interference isotopic fractionation matrix ef-fect reference materials isotopes geochemistry

Multiple Robots Formation Manoeuvring and Collision Avoidance Strategy

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International Journal of Automation and computing 2017年第6期14卷 696-705页

作者： ao-Lei yang Wasif Naeem Min-Rui Fei Li Liu Xiao-Wei Tu Shanghai Key Laboratory of Power Station Automation Technology School of Mechatronic Engineering and AutomationShanghai University School of Electronics Electrical Engineering and Computer Science Queen's University Belfast

This paper presents a multiple robots formation manoeuvring and its collision avoidance strategy. The direction priority sequential selection algorithm is employed to achieve the raw path, and a new algorithm is then proposed to calculate the turning-compliant waypoints supporting the multi-robot formation manoeuvre. The collision avoidance strategy based on the formation control is presented to translate the collision avoidance problem into the stability problem of the formation. The extension-decomposition-aggregation scheme is next applied to solve the formation control problem and subsequently achieve the collision avoidance during the formation manoeuvre. Simulation study finally shows that the collision avoidance problem can be conveniently solved if the stability of the constructed formation including unidentified objects can be satisfied.

关键词： Path planning formation control manoeuvring waypoints line-of-sight collision avoidance

A large congenital and solitary intrahepatic arterioportal fistula in an old woman

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World Journal of Gastroenterology 2009年第13期15卷 1656-1659页

作者： Zhen-Ya Lu Jian-yang ao Tian-An Jiang Zhi-Yi Peng Zhan-Kun Wang Department of InternalMedicine First Affiliated Hospital Medical College ZhejiangUniversity Hangzhou 310003 Zhejiang Province China Department of Ultrasound First Affiliated Hospital Medical College Zhejiang UniversityHangzhou 310003 Zhejiang Province China Department of Radiology First Affiliated HospitalMedical College Zhejiang University Hangzhou 310003Zhejiang Province China

Arterioportal fistula(APF)is a rare cause of portal hypertension and may lead to *** can be congenital,post-traumatic,iatrogenic(transhepatic intervention or biopsy)or related to ruptured hepatic artery *** APF is a rare condition even in *** this case report,we describe a 73-year-old woman diagnosed as APF by ultrasonography,computed tomography,and hepatic artery selective *** fistula was embolized twice but failed,and she still suffered from alimentary tract ***,selective arteriography of the hepatic artery was performed again and venae coronaria ventriculi and short gastric vein were *** the 2-year follow-up,the patient remained *** therefore argue that embolization of venae coronaria ventriculi and short gastric vein may be an effective treatment modality for intrahepatic APF with severe upper gastrointestinal bleeding.

关键词： Congenital intrahepatic arterioportal fistula Liver Embolization Portal hypertension Angiography