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Human hip joint center analysis for biomechanical design of a hip joint exoskeleton Article

Wei YANG,Can-jun YANG,Ting XU

Frontiers of Information Technology & Electronic Engineering 2016, Volume 17, Issue 8,   Pages 792-802 doi: 10.1631/FITEE.1500286

Abstract: The motions of the hip joint center with variation of the flexion angle were measured and the resultingAn exoskeleton mechanism capable to follow the hip center’s movement was designed to cover the full motionranges of flexion and abduction angles, and was adopted in a lower extremity assistive exoskeleton.The humanexoskeleton model was analyzed to further validate the decrease of the hip joint internal forceduring hip joint flexion or abduction by applying the resulting design.

Keywords： Hip joint exoskeleton     Hip joint center     Compatible joint     Human-machine interaction force    

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Design and preliminary evaluation of an exoskeleton for upper limb resistance training

Tzong-Ming WU, Dar-Zen CHEN

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 2,   Pages 188-198 doi: 10.1007/s11465-012-0327-2

Abstract: A compact design of upper limb exoskeleton mechanism for home-based resistance training using a spring-loadedupper limb exoskeleton with a three degree-of-freedom shoulder joint and a one degree-of-freedom elbowjoint allows a patient or a healthy individual to move the upper limb with multiple joints in differentadopting an appropriate motion analysis system and experimental design to verify our prototype of the exoskeletonand determine the optimal configuration of the spring-loaded upper limb exoskeleton.

Keywords： exoskeleton     free-weight exercise     upper limb     motion analysis    

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Push recovery for the standing under-actuated bipedal robot using the hip strategy

Chao LI,Rong XIONG,Qiu-guo ZHU,Jun WU,Ya-liang WANG,Yi-ming HUANG

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 7,   Pages 579-593 doi: 10.1631/FITEE.14a0230

Abstract: This paper presents a control algorithm for push recovery, which particularly focuses on the hip strategyfound that horizontal stability can be maintained with a suitably controlled torque applied at the hipTo solve this problem, different hip strategies are discussed for two cases when (1) external disturbanceapplied on the center of mass (CoM) and (2) external torque is acting around the CoM, and a universal hipMoreover, three torque primitives for the hip, depending on the type of disturbance, are designed to

Keywords： Push recovery     Balance control     Bipedal robot     Hip strategy    

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Design and experiment of a novel pneumatic soft arm based on a deployable origami exoskeleton

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 4, doi: 10.1007/s11465-023-0770-2

Abstract: In this research, a novel soft arm was developed by coupling a rigid origami exoskeleton with soft airbagsThe joint module of the soft arm was composed of a deployable origami exoskeleton and three soft airbagsThe motion and load performance of the soft arm of the eight-joint module was tested.

Keywords： pneumatic soft arm     soft airbag     deployable origami exoskeleton     bistable characteristics     cargo-loading    

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Analytical algorithms of compressive bending capacity of bolted circumferential joint in metro shield

Frontiers of Structural and Civil Engineering   Pages 901-914 doi: 10.1007/s11709-023-0915-8

Abstract: This study focuses on the mechanical characteristics and mechanism of a bolted circumferential jointanalytical algorithms for four stress stages are established to describe the bearing behaviors of the jointstudy is performed to verify the rationality of the simplified theoretical analysis for the segment jointinvestigation is conducted to discuss the factors affecting the ultimate compressive bending capacity of the jointThe method for optimizing the joint flexural stiffness is clarified.

Keywords： shield tunnel     segment joint     joint structural model     failure mechanism    

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3D Printing Hip Prostheses Offer Accurate Reconstruction, Stable Fixation, and Functional Recovery forRevision Total Hip Arthroplasty with Complex Acetabular Bone Defect Article

Yongqiang Hao, Lei Wang, Wenbo Jiang, Wen Wu, Songtao Ai, Lu Shen, Shuang Zhao, Kerong Dai

Engineering 2020, Volume 6, Issue 11,   Pages 1285-1290 doi: 10.1016/j.eng.2020.04.013

Abstract: and large acetabular bone defects present the main challenges and difficulty in the revision of total hipMoreover, a Harris hip score was obtained to evaluate limb function.The Harris hip score indicated a very good functional recovery in all three patients.

Keywords： 3D printing     Hip revision     Complex and large acetabular bone defect     Accurate reconstruction    

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Finite element analysis on the seismic behavior of side joint of Prefabricated Cage System in prefabricated

Yunlin LIU, Shitao ZHU

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 5,   Pages 1095-1104 doi: 10.1007/s11709-019-0538-2

Abstract: Side joint is the weak region of PCS concrete frame and has great influence on seismic behavior of theThus systematically study on the seismic behavior of PCS concrete side joint is necessary.This paper presents a finite element study on behavior of the side joint under seismic loading.

Keywords： PCS concrete side joint     numerical simulation     fiber-beam element joint model     solid element joint model    

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Sensor-guided gait-synchronization lower-extremity-exoskeleton for potential application on unilateral Research Articles

Donghai WANG

Frontiers of Information Technology & Electronic Engineering 2022, Volume 23, Issue 6,   Pages 920-936 doi: 10.1631/FITEE.2000465

Abstract: Guided by the measured joint-angle trajectories, the motorized hip joint lifts the links during walkingWe compare the measured joint-angle trajectories between the healthy and knee-injured legs, the simulatedknee forces, and the human-exoskeleton interaction forces.The results indicate that the motorized hip-controlled LEE can synchronize the motion/gait of the combined

Keywords： Sensor-guided     Lower-extremity-exoskeleton     Body sensor network     Gait synchronization     Weight-support    

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Dynamic characteristics of a magnetorheological pin joint for civil structures

Yancheng LI,Jianchun LI

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 1,   Pages 15-33 doi: 10.1007/s11465-014-0283-0

Abstract:

Magnetorheological (MR) pin joint is a novel device in which its joint moment resistance can be controlledThe smart pin joint is intended to be used as a controllable connector between the columns and beamsstructure, the main purpose of this paper is to test and characterise the hysteretic behaviour of MR pin jointA test scheme is designed to obtain the dynamic performance of MR pin joint in the dominant earthquake

Keywords： Magnetorheological pin joint     hyperbolic hysteresis model experimental testing frequency dependence    

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Identification of dynamic stiffness matrix of bearing joint region

Feng HU, Bo WU, Youmin HU, Tielin SHI

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 3,   Pages 289-299 doi: 10.1007/s11465-009-0064-3

Abstract: The paper proposes an identification method of the dynamic stiffness matrix of a bearing joint regionThe dynamic stiffness matrix of the bearing joint region can be identified by measuring the matrix ofresults, and there is very high reliability in the identified dynamic stiffness matrix of the bearing joint

Keywords： frequency response function (FRFs)     dynamic stiffness     finite element     synthetic substructure method     joint    

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Development of a novel autonomous lower extremity exoskeleton robot forwalking assistance Special Feature on Intelligent Robats

Yong HE, Nan LI, Chao WANG, Lin-qing XIA, Xu YONG, Xin-yu WU

Frontiers of Information Technology & Electronic Engineering 2019, Volume 20, Issue 3,   Pages 318-329 doi: 10.1631/FITEE.1800561

Abstract: In this study, we propose a novel intelligent autonomous lower extremity exoskeleton (Auto-LEE), aimingThe new exoskeleton is designed and developed with a modular structure concept and multi-modal human-robot

Keywords： Lower-limb     Exoskeleton     Self-balancing     Bipedal walking     Modular design    

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Joint slip investigation based on finite element modelling verified by experimental results on wind turbine

Saleh YAGHOOBI, Ahmad SHOOSHTARI

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 3,   Pages 341-351 doi: 10.1007/s11709-017-0393-y

Abstract:

Slippage corresponds to the relative displacement of a bolted joint subjected to shear loads sincethe construction clearance between the bolt shank and the bolthole at assembly can cause joint slip.Deflections of towers with joint slippage effects is up to 1.9 times greater than the displacements obtainedFinally, joint slip data for different types of angles, bolt diameter and bolt arrangements are generated

Keywords： Joint slip     cyclic loading     Finite element modelling     Experimental joint behavior     damping ratios (   

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Unpowered Knee Exoskeleton Reduces Quadriceps Activity during Cycling Article

Ronnapee Chaichaowarat,Jun Kinugawa,Kazuhiro Kosuge

Engineering 2018, Volume 4, Issue 4,   Pages 471-478 doi: 10.1016/j.eng.2018.07.011

Abstract: We developed an exoskeleton prototype using a crossing four-bar mechanism as a knee joint with an embeddedThis study evaluates the passive knee exoskeleton using constant-power cycling tests performed by eightAt the same cycling load, the median power spectral frequency decreases when cycling with the exoskeletonQuadriceps activity can be relieved despite the exoskeleton consuming no electrical energy and not delivering

Keywords： Augmentation     Cycling     Energy cost     Electromyography     Exoskeleton     Knee     Orthosis     Muscle activity    

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General closed-form inverse kinematics for arbitrary three-joint subproblems based on the product of

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 2, doi: 10.1007/s11465-022-0681-7

Abstract: solve all the inverse kinematics problems, and there is no common approach to solve arbitrary three-jointgeometric (NAG) methods that obtain the general closed-form inverse kinematics for all types of three-jointalgebraic constraints are used as the conditions precedent to solve the inverse kinematics of three-jointindicating that the inverse solutions are consistent with the given joint angles validate the generalThe simulation result shows the inverse solutions and six sets given joint angles are consistent.

Keywords： inverse kinematics     Paden–Kahan subproblems     three-joint subproblems     product of exponential     closed-form    

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Multi-omics joint analysis revealed the metabolic profile of retroperitoneal liposarcoma

Frontiers of Medicine doi: 10.1007/s11684-023-1020-z

Abstract: Retroperitoneal liposarcoma (RLPS) is the main subtype of retroperitoneal soft sarcoma (RSTS) and has a poor prognosis and few treatment options, except for surgery. The proteomic and metabolic profiles of RLPS have remained unclear. The aim of our study was to reveal the metabolic profile of RLPS. Here, we performed proteomic analysis (n = 10), metabolomic analysis (n = 51), and lipidomic analysis (n = 50) of retroperitoneal dedifferentiated liposarcoma (RDDLPS) and retroperitoneal well-differentiated liposarcoma (RWDLPS) tissue and paired adjacent adipose tissue obtained during surgery. Data analysis mainly revealed that glycolysis, purine metabolism, pyrimidine metabolism and phospholipid formation were upregulated in both RDDLPS and RWDLPS tissue compared with the adjacent adipose tissue, whereas the tricarboxylic acid (TCA) cycle, lipid absorption and synthesis, fatty acid degradation and biosynthesis, as well as glycine, serine, and threonine metabolism were downregulated. Of particular importance, the glycolytic inhibitor 2-deoxy-D-glucose and pentose phosphate pathway (PPP) inhibitor RRX-001 significantly promoted the antitumor effects of the MDM2 inhibitor RG7112 and CDK4 inhibitor abemaciclib. Our study not only describes the metabolic profiles of RDDLPS and RWDLPS, but also offers potential therapeutic targets and strategies for RLPS.

Keywords： RLPS     proteomics     metabolomics     lipidomics     metabolism    

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Title Author Date Type Operation

Human hip joint center analysis for biomechanical design of a hip joint exoskeleton

Wei YANG,Can-jun YANG,Ting XU

Journal Article

Design and preliminary evaluation of an exoskeleton for upper limb resistance training

Tzong-Ming WU, Dar-Zen CHEN

Journal Article

Push recovery for the standing under-actuated bipedal robot using the hip strategy

Chao LI,Rong XIONG,Qiu-guo ZHU,Jun WU,Ya-liang WANG,Yi-ming HUANG

Journal Article

Design and experiment of a novel pneumatic soft arm based on a deployable origami exoskeleton

Journal Article

Analytical algorithms of compressive bending capacity of bolted circumferential joint in metro shield

Journal Article

3D Printing Hip Prostheses Offer Accurate Reconstruction, Stable Fixation, and Functional Recovery forRevision Total Hip Arthroplasty with Complex Acetabular Bone Defect

Yongqiang Hao, Lei Wang, Wenbo Jiang, Wen Wu, Songtao Ai, Lu Shen, Shuang Zhao, Kerong Dai

Journal Article

Finite element analysis on the seismic behavior of side joint of Prefabricated Cage System in prefabricated

Yunlin LIU, Shitao ZHU

Journal Article

Sensor-guided gait-synchronization lower-extremity-exoskeleton for potential application on unilateral

Donghai WANG

Journal Article

Dynamic characteristics of a magnetorheological pin joint for civil structures

Yancheng LI,Jianchun LI

Journal Article

Identification of dynamic stiffness matrix of bearing joint region

Feng HU, Bo WU, Youmin HU, Tielin SHI

Journal Article

Development of a novel autonomous lower extremity exoskeleton robot forwalking assistance

Yong HE, Nan LI, Chao WANG, Lin-qing XIA, Xu YONG, Xin-yu WU

Journal Article

Joint slip investigation based on finite element modelling verified by experimental results on wind turbine

Saleh YAGHOOBI, Ahmad SHOOSHTARI

Journal Article

Unpowered Knee Exoskeleton Reduces Quadriceps Activity during Cycling

Ronnapee Chaichaowarat,Jun Kinugawa,Kazuhiro Kosuge

Journal Article

General closed-form inverse kinematics for arbitrary three-joint subproblems based on the product of

Journal Article

Multi-omics joint analysis revealed the metabolic profile of retroperitoneal liposarcoma

Journal Article