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Planar jumping with stable landing through foot orientation design and ankle joint control

Qilong YUAN, I-Ming CHEN

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 2,   Pages 100-108 doi: 10.1007/s11465-012-0318-3

Abstract: In this work, through determining the upper body posture trajectory in the flight phase, the foot landingposture is made to be flat while landing.Together with properly designing the trajectory for local center of gravity and the foot landing velocity, the soft landing trajectory is generated.Jumping motion with stable landing is achieved in a dynamic simulation environment based on this method

Keywords： biped jumping     stable landing control     jumping motion generation    

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Landing control method of a lightweight four-legged landing and walking robot

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 4, doi: 10.1007/s11465-022-0707-1

Abstract: A lightweight four-legged landing and walking robot called “FLLWR” is designed in this study.A landing control method via compliance control is proposed to solve the critical problem of impact energydissipation to realize buffer landing.Repetitive landing experiments on a five-degree-of-freedom lunar gravity testing platform are performedUnder the landing conditions with a vertical velocity of 2.1 m/s and a loading weight of 140 kg, the

Keywords： landing and walking robot     lunar exploration     buffer landing     compliance control    

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Opinion on Space Launch and Manned Lunar-landing

Zhang Zeming ,Jiang Yi ,Fu Debin

Strategic Study of CAE 2006, Volume 8, Issue 10,   Pages 37-41

Abstract:

The lunar-landing is the continuation of manned spaceflight engineering.

Keywords： lunar-landing     space launch     launch platform     lunar-landing orbit     technical route    

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Stable expression and control parameters in the numerical simulation of unsaturated flow

Zhiyuan ZHANG; Xu LI; Yongkang WU; Xiaokang LI

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 12,   Pages 1501-1514 doi: 10.1007/s11709-022-0893-2

Abstract: Sensitivity analyses were performed to investigate the control parameters of the equation.

Keywords： Richards’ equation     sensitivity analysis     unsaturated soil     hydraulic diffusivity     seepage simulation    

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Estimation of fatigue damage of airplane landing gear

LIU Ke-ge, YAN Chu-liang, ZHANG Shu-ming

Frontiers of Mechanical Engineering 2006, Volume 1, Issue 4,   Pages 424-428 doi: 10.1007/s11465-006-0051-x

Abstract: Taking the main landing gears of fighter and transport airplanes as examples, the fatigue life was estimatedThe computed results show that the landing damage to the fighter and transport airplanes is 75% and 60%of the total damage, and the damage caused by the landing stroke is 40% of the landing-gear damage.
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Modeling and analysis of landing collision dynamics for a shipborne helicopter

Dingxuan ZHAO, Haojie YANG, Carbone GIUSEPPE, Wenhang LI, Tao NI, Shuangji YAO

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 1,   Pages 151-162 doi: 10.1007/s11465-020-0617-z

Abstract: established based on small-angle approximation to improve the simulation model for shipborne helicopter landingResults show that the proposed dynamic model can simulate the collision motion of helicopter landingSeveral suggestions for helicopter pilot landing are likewise provided.

Keywords： shipborne helicopter     landing model     Lagrange equations     dynamics     validation    

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Efficient conversion of lignin to alkylphenols over highly stable inverse spinel MnFeO catalysts

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 8,   Pages 1085-1095 doi: 10.1007/s11705-022-2236-1

Abstract: Developing efficient and stable catalysts to effectively convert lignin into high-value chemicals is

Keywords： lignin depolymerization     spinel     catalysts     hydrogenation    

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Engineering the grain boundary: a promising strategy to configure NiCoPO/NiCoP nanowire arrays for ultra-stable

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 8,   Pages 1259-1267 doi: 10.1007/s11705-021-2132-0

Abstract: Importantly, an ultra-stable ability, 88.5% of retention after 10000 cycles, was achieved in an asymmetric

Keywords： NiCo     array electrode     grain boundary     stability     supercapacitor    

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Optimising the oil phases of aluminium hydrogel-stabilised emulsions for stable, safe and efficient vaccine

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 6,   Pages 973-984 doi: 10.1007/s11705-021-2123-1

Abstract: optimising the oil phase of the emulsion adjuvants, this work may offer an alternative strategy for safe, stable

Keywords： pickering emulsion     vaccine adjuvant     alum-stabilised emulsion     oleic to linoleic acid ratio     stability    

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An experimental study of a single-piston free piston linear generator

Jin XIAO, Yingdong CHENG, Jinlong WANG, Chengwei ZHU, Zhen HUANG

Frontiers in Energy 2022, Volume 16, Issue 6,   Pages 916-930 doi: 10.1007/s11708-022-0838-4

Abstract: However, due to the lack of the mechanic crankshaft, the related piston motion control is a challengeIn this paper, the development process and experimental validation of the related control strategiesAfterward, optimal control parameters, in terms of scavenging pressure, air-fuel equivalence ratio, andEventually, the FPLG prototype has achieved a continuous stable operation of over 1000 cycles with an

Keywords： free piston linear generator (FPLG)     charged scavenging     engine control     misfire     stable operation    

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Effective and selective separation of perrhenate from acidic wastewater by super-stable, superhydrophobic

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 2, doi: 10.1007/s11783-021-1456-9

Abstract:

• A ZnO-biochar hybrid composite was prepared by solvothermal-pyrolysis synthesis.

Keywords： Selectivity     Adsorption     Re(VII)     ZnO     Biochar    

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g-CN-coated MnO hollow nanorod cathode for stable aqueous Zn-ion batteries

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 2,   Pages 217-225 doi: 10.1007/s11705-022-2214-7

Abstract: Herein, superior α-MnO2@g-C3N4 was successfully prepared for stable

Keywords： α-MnO2 hollow nanorods     g-C3N4     heterojunction     aqueous Zn-ion batteries    

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Preparation and performance of novel thermal stable composite nanofiltration membrane

WU Chunrui, ZHANG Shouhai, YANG Fajie, YAN Chun, JIAN Xigao

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 4,   Pages 402-406 doi: 10.1007/s11705-008-0063-7

Abstract: The novel thermal stable composite nanofiltration membranes were prepared through the interfacial polymerization

Keywords： electron microscopy     rejection     composite membrane     interfacial polymerization     thermal stability    

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δN-stable isotope analysis of NH: An overview on analytical measurements, source sampling and its source

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 6, doi: 10.1007/s11783-021-1414-6

Abstract:

• Challenges in sampling of NH3 sources for d15N analysis are highlighted.

Keywords： Aerosol ammonium     Atmospheric gaseous ammonia     Isotope fingerprinting     Isotope-based source apportionment     Ammonia gas-to-particle conversion    

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Conversion of CO into CO by high active and stable PdNi nanoparticles supported on a metal-organic framework

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 7,   Pages 1139-1148 doi: 10.1007/s11705-021-2111-5

Abstract: In contrast, Pd70Ni30/MIL-101(Cr) revealed the stable structure and activity during

Keywords： CO oxidation     heterogeneous catalysis     metal-organic framework     NH2 functional group     PdNi    

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Title Author Date Type Operation

Planar jumping with stable landing through foot orientation design and ankle joint control

Qilong YUAN, I-Ming CHEN

Journal Article

Landing control method of a lightweight four-legged landing and walking robot

Journal Article

Opinion on Space Launch and Manned Lunar-landing

Zhang Zeming ,Jiang Yi ,Fu Debin

Journal Article

Stable expression and control parameters in the numerical simulation of unsaturated flow

Zhiyuan ZHANG; Xu LI; Yongkang WU; Xiaokang LI

Journal Article

Estimation of fatigue damage of airplane landing gear

LIU Ke-ge, YAN Chu-liang, ZHANG Shu-ming

Journal Article

Modeling and analysis of landing collision dynamics for a shipborne helicopter

Dingxuan ZHAO, Haojie YANG, Carbone GIUSEPPE, Wenhang LI, Tao NI, Shuangji YAO

Journal Article

Efficient conversion of lignin to alkylphenols over highly stable inverse spinel MnFeO catalysts

Journal Article

Engineering the grain boundary: a promising strategy to configure NiCoPO/NiCoP nanowire arrays for ultra-stable

Journal Article

Optimising the oil phases of aluminium hydrogel-stabilised emulsions for stable, safe and efficient vaccine

Journal Article

An experimental study of a single-piston free piston linear generator

Jin XIAO, Yingdong CHENG, Jinlong WANG, Chengwei ZHU, Zhen HUANG

Journal Article

Effective and selective separation of perrhenate from acidic wastewater by super-stable, superhydrophobic

Journal Article

g-CN-coated MnO hollow nanorod cathode for stable aqueous Zn-ion batteries

Journal Article

Preparation and performance of novel thermal stable composite nanofiltration membrane

WU Chunrui, ZHANG Shouhai, YANG Fajie, YAN Chun, JIAN Xigao

Journal Article

δN-stable isotope analysis of NH: An overview on analytical measurements, source sampling and its source

Journal Article

Conversion of CO into CO by high active and stable PdNi nanoparticles supported on a metal-organic framework

Journal Article