Resource Type

Journal Article 158

Conference Videos 2

Year

2023 15

2022 9

2021 12

2020 3

2019 6

2018 9

2017 13

2016 14

2015 5

2014 3

2013 6

2012 5

2011 5

2010 10

2009 9

2008 6

2007 13

2006 2

2005 1

2004 3

open ︾

Keywords

Atomic force microscopy 3

actuator 3

atomic force microscopy 3

ANOVA 2

Adhesion force 2

FEM 2

Inverse problem 2

Lorentz force 2

artificial muscles 2

bond-energy 2

bond-length 2

development strategy 2

force constant 2

piezoelectric actuator 2

technology foresight 2

-irradiation 1

1g model test 1

2035 1

360° Characterization 1

open ︾

Search scope:

排序： Display mode:

Electronically enhancing the long-range nanopositioning accuracy of a Lorentz force actuator Research Article

Bimal Jeet GOTEEA, Qianjun ZHANG, Wei DONG,bj.goteea@gmail.com,zhang_qj@stu.hit.edu.cn,dongwei@hit.edu.cn

Frontiers of Information Technology & Electronic Engineering 2023, Volume 24, Issue 7,   Pages 1080-1092 doi: 10.1631/FITEE.2200255

Abstract: First, a suitable coil is designed for the actuator based on the stiffness of the flexure guide modelThe flexure mechanism and actuator performance are then verified with finite element analysis.

Keywords： Nanopositioning     Flexure guides     Long range     Voice coil motor     Lorentz force actuator    

HTML PDF Collect

On Experiment that Measures the Momentum-Energy Relation of Moving Electrons

Ji Hao

Strategic Study of CAE 2006, Volume 8, Issue 10,   Pages 60-65

Abstract: the results, the paper points out that the postulate of special relativity on the invariation of the forceacted on a moving electron is wrong, and further proposes that the Lorentz force (theoretically) acted

Keywords： the special relativity     Lorentz force     magnetic intensity     speed limit    

HTML PDF Collect

Influence of direct electric current on wetting behavior during brazing

Kirsten BOBZIN, Wolfgang WIETHEGER, Julian HEBING, Lidong ZHAO, Alexander SCHMIDT, Riza ISKANDAR, Joachim MAYER

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 3,   Pages 496-503 doi: 10.1007/s11465-019-0582-6

Abstract: The electric component of the Lorentz force is supposed to be feasible reasons for the observed dependence

Keywords： brazing     electric current assisted wetting     Lorentz force    

HTML PDF Collect

New nonlinear stiffness actuator with predefined torque‒deflection profile

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 1, doi: 10.1007/s11465-022-0721-3

Abstract: A nonlinear stiffness actuator (NSA) could achieve high torque/force resolution in low stiffness rangeThough sliding friction force is inevitable because no rollers were used in the cam-based mechanism,displacement between the cam and the leaf spring is very small, and consumption of sliding friction force

Keywords： compliant actuator     nonlinear stiffness actuator     nonlinear spring     predefined torque−deflection profile    

HTML PDF Collect

A model reference adaptive control based method for actuator delay estimation in real-time testing

Cheng CHEN, James M. RICLES

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 3,   Pages 277-286 doi: 10.1007/s11709-010-0072-8

Abstract: The compensation of actuator delay is therefore critical to achieve stable and reliable experimentaldelay and achieve good actuator control for real-time tests.However, these adaptive methods all require time duration for actuator delay adaptation.Experiments show that a good actuator delay estimate can help optimize the performance of the adaptiveThe rate of adaptation also requires that a good actuator delay estimate be acquired especially for the

Keywords： real-time testing     actuator delay     compensation     adaptive control     MIT rule     discrete transfer function    

HTML PDF Collect

Development of a masticatory robot using a novel cable-driven linear actuator with bidirectional motion

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 4, doi: 10.1007/s11465-022-0687-1

Abstract: A cable-driven linear actuator (CDLA) capable of bidirectional motion is proposed in this study to designAccordingly, the CDLA’s force transmission efficiencies in two directions are 84.5% and 85.9%.

Keywords： masticatory robot     cable-driven     linear actuator     parallel robot     stiffness analysis    

HTML PDF Collect

Mechanical design and analysis of a novel variable stiffness actuator with symmetrical pivot adjustment

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 4,   Pages 711-725 doi: 10.1007/s11465-021-0647-1

Abstract: Thus, this paper aims to design a novel variable stiffness actuator (VSA) that can provide safer physical

Keywords： variable stiffness actuator     variable stiffness module     drive module     symmetrical structure     double-deck    

HTML PDF Collect

Design and characteristic research of a novel electromechanical-hydraulic hybrid actuator with two transmission

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 2, doi: 10.1007/s11465-022-0735-x

Abstract: This study proposes and designs a novel electromechanical-hydraulic hybrid actuator (EMHA) that integrates

Keywords： electromechanical-hydraulic hybrid actuator (EMHA)     integration     transmission mechanisms     power assistance    

HTML PDF Collect

Dynamical research on spherical micro actuator with piezoelectric ceramic stacks drivers

ZHANG Ruihua, CHEN Haichu

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 4,   Pages 433-438 doi: 10.1007/s11465-007-0074-y

Abstract: This paper develops a 30 mm × 30 mm × 50 mm spherical micro actuator driven by piezoelectric ceramicFirst, the space coordinate relationship of the spherical micro actuator and a dynamic model are setSecond, The Runge-Kutta arithmetic is used to calculate the dynamical parameters of the micro actuatorwith a micro-gripper based on the sample spherical micro actuator, and the experimental research onof the micro actuator, driving signal frequency, friction coefficient of the contact surface between

Keywords： spherical     micro-gripper     friction coefficient     dynamic     frequency    

HTML PDF Collect

Modeling limit force capacities of high force to volume lead extrusion dampers

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 3,   Pages 609-622 doi: 10.1007/s11709-021-0724-x

Abstract: Small volumetric sizes and high force capacities define high-force-to-volume (HF2V) devices, which canHowever, the design of such devices for specific force capacities has proven difficult based on the complexitiesThis study developed upper- and lower-bound force capacity estimates from analytical mechanics basedThe proposed models were validated by comparing the predicted bounds to experimental force capacity data/sub>) pair has a mean lower-bound gap of 36%, meaning the lower bound was 74% of the actual device force

Keywords： extrusion     lead dampers     upper and lower bound     analytical modelling     limit force    

HTML PDF Collect

Impact drive rotary precision actuator with piezoelectric bimorphs

ZHANG Hongzhuang, ZENG Ping, HUA Shunming, CHENG Guangming, YANG Zhigang

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 1,   Pages 71-75 doi: 10.1007/s11465-008-0008-3

Abstract: An impact drive rotary precision actuator with end-loaded piezoelectric cantilever bimorphs is proposedcantilever bimorphs, a specific fixed-frequency and adjustable-amplitude is confirmed to control the actuatorThe results show that an actuator excited by fixed-frequency and the adjustable-amplitude ramp voltageability, simple structure and only one percent the cost of traditional impact drive mechanisms, the actuator

Keywords： specific fixed-frequency     waveform     piezoelectric cantilever     mechanisms     adjustable-amplitude    

HTML PDF Collect

Motion control of multi-actuator hydraulic systems for mobile machineries: Recent advancements and future

Bing XU, Min CHENG

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 2,   Pages 151-166 doi: 10.1007/s11465-018-0470-5

Abstract: recent advancements and upcoming trends in motion control technologies employed in designing multi-actuatorHowever, motion control technologies of multi-actuator hydraulic systems have faced increasing challengesThen, the advanced operation methods of multi-actuator mobile machineries are reviewed, including coordinated

Keywords： motion control     electrohydraulic control     energy efficiency     mobile machineries    

HTML PDF Collect

Quality control based on electrode displacement and force in resistance spot welding

Chuntao JI, Lipeng DENG

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 4,   Pages 412-417 doi: 10.1007/s11465-010-0114-x

Abstract: The behaviors of electrode displacement and force during spot welding under various conditions, suchAn electrode force peak is observed and believed relevant to the sufficient nugget size.

Keywords： aluminum     electrode displacement     electrode force     nugget size     data acquisition    

HTML PDF Collect

Preparation and performance of soft actuator based on IPMC with silver electrodes

Qi CHEN, Ke XIONG, Kan BIAN, Ning JIN, Bangfeng WANG,

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 4,   Pages 436-440 doi: 10.1007/s11465-009-0054-5

Abstract: The surface electrodes of traditional ionic polymer-metal composites (IPMC) are made of platinum. To reduce the production cost, nonprecious metals such as silver is proposed. A new approach of electroless silver plating based on chemical deposition method is adopted, getting two types of IPMCs, Pt-Ag IPMC, and Ag-Ag IPMC. The microscopic analysis, driving abilities tests, and their surface-electrode resistance analysis show that Ag and Pt particles penetrate inside Nafion membrane with gradient distribution throughout the membrane. The maximum electro-active bending deformation angles of the specimens, which are obtained under the same specimen dimension and constrains, are about 60° for Pt-Pt IPMC and Pt-Ag IPMC and 90° for the Ag-Ag IPMC, respectively, corresponding to the driving voltage of 3 V, 4 V, and 1.5 V. The surface-electrode resistance of Ag-Ag IPMC is the lowest and the most stable, which shows that the proposed approach is valid. The experiments show that the IPMC technology based on the silver electrode is feasible.

Keywords： ionic polymer-metal composites (IPMC)     Nafion     intelligent material     soft actuators     electroless silver plating    

HTML PDF Collect

Visualization of force networks in 2D dense granular materials

Jianguo LIU, Qicheng SUN, Feng JIN,

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 1,   Pages 109-115 doi: 10.1007/s11709-010-0003-8

Abstract: To understand the structure and evolution of force chains, a photoelastic technique was improved forThe interparticle contact force distribution was found a peak around the mean value, a roughly exponentialtail for greater force and a dip toward zero for smaller force.The force chain network around the probe tip was depicted, and the contact angle distribution of particlesin force chains was found to be well aligned in the directions of major principal stress.

Keywords： granular matter     force chain     multiscale modeling    

HTML PDF Collect

Title Author Date Type Operation

Electronically enhancing the long-range nanopositioning accuracy of a Lorentz force actuator

Bimal Jeet GOTEEA, Qianjun ZHANG, Wei DONG,bj.goteea@gmail.com,zhang_qj@stu.hit.edu.cn,dongwei@hit.edu.cn

Journal Article

On Experiment that Measures the Momentum-Energy Relation of Moving Electrons

Ji Hao

Journal Article

Influence of direct electric current on wetting behavior during brazing

Kirsten BOBZIN, Wolfgang WIETHEGER, Julian HEBING, Lidong ZHAO, Alexander SCHMIDT, Riza ISKANDAR, Joachim MAYER

Journal Article

New nonlinear stiffness actuator with predefined torque‒deflection profile

Journal Article

A model reference adaptive control based method for actuator delay estimation in real-time testing

Cheng CHEN, James M. RICLES

Journal Article

Development of a masticatory robot using a novel cable-driven linear actuator with bidirectional motion

Journal Article

Mechanical design and analysis of a novel variable stiffness actuator with symmetrical pivot adjustment

Journal Article

Design and characteristic research of a novel electromechanical-hydraulic hybrid actuator with two transmission

Journal Article

Dynamical research on spherical micro actuator with piezoelectric ceramic stacks drivers

ZHANG Ruihua, CHEN Haichu

Journal Article

Modeling limit force capacities of high force to volume lead extrusion dampers

Journal Article

Impact drive rotary precision actuator with piezoelectric bimorphs

ZHANG Hongzhuang, ZENG Ping, HUA Shunming, CHENG Guangming, YANG Zhigang

Journal Article

Motion control of multi-actuator hydraulic systems for mobile machineries: Recent advancements and future

Bing XU, Min CHENG

Journal Article

Quality control based on electrode displacement and force in resistance spot welding

Chuntao JI, Lipeng DENG

Journal Article

Preparation and performance of soft actuator based on IPMC with silver electrodes

Qi CHEN, Ke XIONG, Kan BIAN, Ning JIN, Bangfeng WANG,

Journal Article

Visualization of force networks in 2D dense granular materials

Jianguo LIU, Qicheng SUN, Feng JIN,

Journal Article