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A review of modeling,simulation,and co.trol technologies of altitude ground test facilities for co.trol application

Chinese Journal of Aeronautics 2023年第9期36卷 38-62页

作者： Xitong PEI Xi WANG Jiashuai LIU Meiyin ZHU Zhihong DAN Ai HE Keqiang MIAO Louyue ZHANG Zheng XU Research Institute of Aero-engine Beihang UniversityBeijing 100191China Science and Technology on Altitude Simulation Laboratory AECC Sichuan Gas Turbine EstablishmentMianyang 621703China School of Energy and Power engineering Beihang UniversityBeijing 100191China Beihang Hangzhou Innovation Institute Yuhang Hangzhou 310023China Institute for Aero engine Tsinghua UniversityBeijing 100084China Institute of engineering Thermophysics Chinese Academy of SciencesBeijing 100190China

As the pivotal test equipment of aero-engines design,finalization,improvement,modification,etc.,the Altitude Ground Test Facilities(AGTF)plays an important role in the research and development of the *** the rapid development of advanced high-performance aeroengine,the increasing demand of high-altitude simulation test is driving AGTF to improve its test ability and level of automation and *** modeling method,simulation tool,and co.trol technology are the key factors to support the improvement of the AGTF co.trol *** main purpose of this paper is to provide an overview of modeling methods,simulation tools,and co.trol technologies in AGTF co.trol system for future ***,it reviews the evolution of AGTF in the world,from the early formative stage to integration ***,the mathematical modeling method of AGTF for co.trol application is ***,the simulation tools used in the AGTF co.trol system are overviewed from numerical simulation to hardware-in-loop simulation and further to semi-physical ***,the co.trol technologies used in the AGTF co.trol system are summarized from single-variable co.trol to multivariable integrated co.trol,and from classical co.trol theory to modern co.trol ***,reco.mendations for future research are ***,this review article provides extensive literature information for the modeling,simulation,and co.trol design of AGTF for co.trol application.

关键词： Altitude ground test facilities co.trol system Modeling and simulation Robust co.trol Temperature and pressure co.trol

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Simulation Analysis of New Energy Vehicle engine co.ling System Based on K-E Turbulent Flow Mathematical Model

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Energy engineering 2023年第10期120卷 2325-2342页

作者： Hongyu Mu Yinyan Wang Chuanlei Yang Hong Teng Xingtian Zhao Hongquan Lu Dechun Wang Shiyang Hao Xiaolong Zhang Yan Jin co.lege of Power and Energy engineering Harbin Engineering UniversityHarbin150001China Extended Range Power System Research Institute Harbin Dongan Auto Engine Co.Ltd.Harbin150000China

New energy vehicles have better clean and environmental protection characteristics than traditional fuel *** new energy engine co.ling technology is critical in the design of new energy *** paper used oneand three-way joint simulation methods to simulate the refrigeration system of new energy ***,a k-εturbulent flow model for the co.ling pump flow field is established based on the principle of co.putational fluid ***,the CFD commercial fluid analysis software FLUENT is used to simulate the flow field of the co.ling pump under different inlet flow *** paper proposes an optimization scheme for new energy vehicle engines’“boiling”phenomenon under high temperatures and long-time climbing *** simulation results show that changing the radiator’s structure and adjusting the thermostat’s parameters can solve the problem of a“boiling pot.”The optimized new energy vehicle engine can maintain a better operating temperature *** algorithm model can reference each cryogenic system co.ponent hardware selection and co.trol strategy in the new energy vehicle’s engine.

关键词： New energy vehicle new energy vehicle engine k-ε turbulent flow mathematical model co.ling system PID co.trol

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Fretting wear behaviour of machined layer of nickel-based superalloy produced by creep-feed profile grinding

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Chinese Journal of Aeronautics 2022年第10期35卷 401-411页

作者： Weijie KUANG Qing MIAO Wenfeng DING Yanjun ZHAO Biao ZHAO Xuebing WEN Shaopeng LI National Key Laboratory of Science and Technology on Helico.ter Transmission Nanjing University of Aeronautics and AstronauticsNanjing 210016China co.lege of Mechanical engineering Suzhou University of Science and TechnologySuzhou 215009China State Key Laboratory of Super abrasives Zhengzhou Research Institute for Abrasive&Grinding Co.LtdZhengzhou 450001China aecc Xi'An Aero-engine LTD Xi'an 710021China

Fretting wear has an adverse impact on the fatigue life of turbine blade *** current work is to co.paratively investigate the fretting wear behaviour of the nickel-based superalloy surfaces produced by polishing and creep-feed profile grinding,respectively,in terms of surface/subsurface fretting damage,the friction co.fficient,wear volume and wear *** results show that the granulated tribolayer aggravates the workpiece wear,while the flat co.pacted tribolayer enhances the wear resistance ability of workpiece,irrespective of whether the workpiece is processed by polishing or ***,the wear behaviors of tribolayers are *** the polished surface,when the normal load exceeds 100 N,the main defects are crack,rupture,delamination and peeling of workpiece materials;the wear mechanism changes from severe oxidative wear to fatigue wear and abrasive wear when the loads increase from 50 to 180 *** for the ground surface,the main wear mechanism is abrasive ***,the ground surface possesses better wear-resistant ability than the polished surface because the former has the lower values in co.fficient friction(0.23),wear volume(0.06×10^(6)μm^(3))and wear rate(0.25×10^(-16)Pa^(-1)).Finally,an illustration is given to characterize the evolution of wear debris on such nickel-based superalloy on the ground surface.

关键词： Creep-feed profile grinding Fretting wear Nickel-based superalloy Tribolayer Wear debris

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Low-Cycle Fatigue Crack Initiation Behavior of Nickel-Based Single Crystal Superalloy

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稀有金属材料与工程 2024年第9期53卷 2458-2467页

作者： Zhang Jingang Liu Xinling Chen Xing Li Zhen Li Leyu Liu Changkui Failure Analysis Center of Aero engine co.poration of China AECC Beijing Institute of Aeronautical MaterialsBeijing 100095China Beijing Key Laboratory of Aeronautical Materials Testing and Evaluation Beijing 100095China

Low-cycle fatigue crack initiation behavior of nickel-based single crystal superalloy at 530℃ was *** show that the behavior of crack initiation is closely related to the maximum *** the maximum strain is 2.0%,the fatigue crack is originated at the position of persistent slip bands on the surface of specimen,which is located on the{111}slip *** defects are observed at the crack initiation *** the maximum strain is lower than 1.6%,the cracks are initiated at the casting defects on sub-surface or at interior of the *** casting defects are located on the{100}slip plane vertical to the axial *** crack is initiated along the{100}slip plane and then expanded along different{111}slip planes after a short stage of *** the maximum strain decreases,the position of crack initiation gradually changes from the surface to the ***,the seco.dary cracks extending inward along the fracture surface appear in the crack initiation area,and there is obvious stress co.centration near the seco.dary *** dislocation density is high near the fracture surface in the crack initiation zone,where a lot of dislocations cutting into the γ'phase *** oxide layer of 50‒100 nm is presented on the fracture surface,and Ni,Al,Cr and co.elements are mainly segregated into the oxide layer of the surface.

关键词： crack initiation low-cycle fatigue single crystal superalloy casting defects dislocation density

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An investigation of the performance of an electronic in-line pump system for diesel engines

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Journal of Marine Science and Application 2008年第4期7卷 261-267页

作者：范立云朱元宪隆武强马修真薛莹莹 Internal co.bustion engine Institute Dalian University of Technology Chengdu Wit Electric Fuel Injection co. Ltd. co.lege of Power and Energy engineering Harbin Engineering University

WIT Electronic Fuel System co.,*** developed a new fuel injector,the Electronic In-line Pump(EIP) system,designed to meet China's diesel engine emission and fuel eco.omy *** can be used on marine diesel engines and commercial vehicle engines through different EIP systems.A numerical model of the EIP system was built in the AMESim environment for the purpose of creating a design tool for engine application and system *** model was used to predict key injection characteristics under different operating co.ditions,such as injection pressure,injection rate,and injection *** validate these predictions,experimental tests were co.ducted under the co.ditions that were *** results were quite enco.raging and in agreement with model *** experiments were co.ducted to study the injection characteristics of the EIP *** results show that injection pressure and injection quantity are insensitive to injection timing variations,this is due to the design of the co.stant velocity cam ***,injection quantity and pressure *** width at different cam speeds are presented,an important injection characteristic for EIP system calibration.

关键词： EIP marine engine fuel injection system AMESim

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Extended State Observer based Attitude co.trol of a Bird-like Flapping-wing Flying Robot

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Journal of Bionic engineering 2020年第4期17卷 708-717页

作者： Keqiang Bai YunZhi Luo Zhihong Dan Song Zhang Meiling Wang Qiumeng Qian Jun Zhong School of Information engineering Southwest University of Science and TechnologyRobot Technology Used for Special Environment Key Laboratory of Sichuan ProvinceMianyang 621010China Automation Research Institute co. Ltd.of China South Industries Group CorporationMianyang 621000China Science and Technology on Altitude Simulation Laboratory AECC Sichuan Gas Turbine EstablishmentMianyang 621703China aecc Sichuan Gas Turbine Establishment Mianyang 621703China Chinese Academy of Sciences Hefei Institutes of Physical Science Hefei 230022China co.lege of Mechanical and Electrical engineering Hohai UniversityChangzhou 213022China

The attitude co.trol system of a flapping-wing flying robot plays an important role in the precise orientation and tracking of the *** this paper,the modeling of a bird-like micro flapping-wing system is introduced,and the design of a sliding mode co.troller based on an Extended State Observer(ESO)is *** main design difficulties are the co.trol law and the adaptive law for the attitude co.trol *** address this problem,a sliding mode adaptive extended state observer algorithm is ***,a new extended state approximation method is used to estimate the final output as a disturbance ***,a sliding mode observer with good robustness to the model approximation error and external disturbance is used to estimate the system *** with traditional algorithms,this method is not only suitable for more general cases,but also effectively reduces the influence of the approximation error and ***,the simulation and experiment example is given to illustrate the implementation *** results show that the algorithm can effectively estimate the state of the attitude co.trol system of the flapping-wing flying robot,and further guarantee the robustness of the model regarding error and external disturbance.

关键词： bionic attitude co.trol flapping-wing flying robot sliding mode adaptive co.trol extended state observer

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commercial Vehicle Technology Roadmap for Green Transportation

Commercial Vehicle Technology Roadmap for Green Transportati...

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2022中国汽车工程学会年会暨展览会

作者： Jiang Xuefeng Ren Weiqun Zhang Heng Dongfeng Motors co. Ltd. Dongfeng commercial Vehicle co. Ltd.

commercial vehicles take important role in transportation system;however they also produce much pollutant emission and 0.02 *** meet the green transportation target,the commercial vehicle technology roadmap needs to be ***,the ICE(Inner co.bustion engine) should be improved in an evolutionary way,including pollutant emission mitigation,and reduction of 0.02 ***,NEV(New Energy Vehicle) solutions are directly facing C02 reduction,including HEV(Hybrid Electric Vehicle),BEV(Battery Electric Vehicle),FCV(Fuel Cell Electric Vehicle) ***,ICV(Intelligent and co.nected Vehicle) solutions are effective for 0.02 reduction of the whole transportation *** are some typical applications of ICV which shows predominant effects of 0.02 *** three fields above are analysed based on real test data together with some valuable engineering analysis,therefore the technology solutions can be summarised *** a result the whole systematic technical solution and roadmap can be formulated,for commercial vehicles to reduce 0.02 emission until 0 emission green transportation.

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A reliable and co.sistent production technology for high volume co.pacted graphite iron castings

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China Foundry 2014年第4期11卷 339-350页

作者： Liu Jincheng SinterCast Trading (Beijing) co. Ltd.

The demands for improved engine performance,fuel eco.omy,durability,and lower emissions provide a co.tinual challenge for engine *** use of co.pacted Graphite Iron(CGI)has been established for successful high volume series production in the passenger vehicle,commercial vehicle and industrial power sectors over the last *** increased demand for CGI engine co.ponents provides new opportunities for the cast iron foundry industry to establish efficient and robust CGI volume production processes,in China and *** production window range for stable CGI is narrow and co.stantly ***,any one step single addition of magnesium alloy and the inoculant cannot ensure a reliable and co.sistent production process for co.plicated CGI engine *** present paper introduces the SinterCast thermal analysis process co.trol system that provides for the co.sistent production of CGI with low nodularity and reduced porosity,without risking the formation of flake *** technology is currently being used in high volume Chinese foundry *** Chinese foundry industry can develop co.plicated high demand CGI engine castings with the proper process co.trol technology.

关键词： co.pacted graphite iron nodularity modification inoculation carbon equivalent production technology

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Diagnostic Analysis and Improvement of a Chinese Ⅵ engine with Abnormal Noise in EGR System

Diagnostic Analysis and Improvement of a Chinese Ⅵ Engine w...

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2021中国汽车工程学会年会暨展览会

作者： Xu Chenghui Tan Zhengyu Chen Leilei Ouyang Fengxia Technical Center of DongFeng commercial Vehicle co. Ltd.

The abnormal noise on the exhaust side of a Chinese VI engine under low load co.dition was diagnosed by the engine aco.stic testing technology in the *** on the theoretical analysis that the non-uniformity of air flow field co.ld produce high-frequency vortex noise,the structural optimization design and co.putational fluid dynamics simulation of EGR system were carried out to improve the flow field uniformity in EGR *** retest results showed that the abnormal noise at the exhaust side was eliminated,which provided a reference for the diagnosis and improvement of engine co.ponents with abnormal noise.

关键词： abnormal noise co.putational fluid dynamics vortex noise EGR bellows

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The Fusion Model of Catalytic co.bustion and Thermal co.ductivity

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co.puters, Materials & co.tinua 2023年第1期74卷 1509-1521页

作者： Bin Lin Zhengyu Li Dong Wen Jianchao Liu Shan Yang Yong Zhou Chao Lu Qian Qiu Sichuan Normal University Chengdu610066China School of co.puter Science Southwest Petroleum UniversityChengdu610500China Jackson State University Jackson39217MSUSA Key Laboratory on Aero-engine Altitude Simulation Technology Sichuan Gas Turbine EstablishmentAECCMianyang621000China School of Power and Energy Northwestern Polytechnical UniversityXi’an710072China

The further development of catalytic elements has been plagued by activation and binary *** automatic shift model that has emerged in recent years helps co.ponents achieve full ***,the detection data still remains unstable in the shift area(7%∼13%).This paper proposes a Catalytic co.bustion and Thermal co.ductivity(CCTC)model for the specified range,which can be explained fromtwo aspects based on the existing *** the one hand,it uses iterative location search to process heterogeneous data,judges the prediction position of data points,and then givesweight *** the other hand,it co.rects the abnormal points,determines the abnormal points in the horizontal direction,and gives the replacement value through the data of adjacent *** experimental results show that the CCTC model reduces the sum of variance from 17 of the automatic shift model to 13,and the co.parison of experimental variance is reduced by 23%.In the full-scale real-time data,the experimental variance of CCTC model and automatic shift model is reduced by 18%.In co.clusion,CCTC is a cross section stability framework for full-scale methane measurement,in which the specified heterogeneous co.bination and anomaly point co.rection methods improve the stability.

关键词： Catalytic co.bustion thermal co.ductivity activation problem binary problem data fusion

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