Resource Type

Journal Article 1438

Year

2023 90

2022 111

2021 96

2020 87

2019 78

2018 86

2017 75

2016 65

2015 82

2014 54

2013 51

2012 43

2011 48

2010 55

2009 41

2008 44

2007 56

2006 54

2005 38

2004 32

open ︾

Keywords

system 17

optimization 15

index system 10

system engineering 9

Artificial intelligence 8

Multi-agent system 8

management 8

management system 8

simulation 8

system construction 8

Qian Xuesen 7

modeling 6

open complex giant system 6

public health 6

engineering management 5

fault diagnosis 5

innovation 5

sustainable development 5

system integration 5

open ︾

Search scope:

排序： Display mode:

An investigation into the vibration of harmonic drive systems

M. Masoumi, H. Alimohammadi

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 4,   Pages 409-419 doi: 10.1007/s11465-013-0275-5

Abstract:

Harmonic drive systems are precise and specific transmission gear systems which are beneficial inThis paper presents a vibration analysis of harmonic drive systems using the shell theory.Equations of vibration for the flexspline and the circular spline of the system are derived and usedto find the natural frequencies for both parts and, moreover, vibration response of the system underthe flexspline and its gear tooth, eccentricity, and unbalancing on the vibrational behavior of the system

Keywords： harmonic drive system     strain wave gearing mechanism     vibration analysis     natural frequencies    

HTML PDF Collect

Meshing stiffness property and meshing status simulation of harmonic drive under transmission loading

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 2, doi: 10.1007/s11465-022-0674-6

Abstract: The multitooth meshing state of harmonic drive (HD) is an important basic characteristic of its high

Keywords： harmonic drive     meshing flexibility matrix     meshing force     loading backlash     flexspline     contact analysis    

HTML PDF Collect

Hierarchical parameter estimation of DFIG and drive train system in a wind turbine generator

Xueping PAN, Ping JU, Feng WU, Yuqing JIN

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 3,   Pages 367-376 doi: 10.1007/s11465-017-0429-y

Abstract:

A new hierarchical parameter estimation method for doubly fed induction generator (DFIG) and drivetrain system in a wind turbine generator (WTG) is proposed in this paper.Firstly, the parameters of the DFIG and the drive train are estimated locally under different types ofa coordination estimation method is further applied to identify the parameters of the DFIG and the drive

Keywords： wind turbine generator     DFIG     drive train system     hierarchical parameter estimation method     trajectory sensitivity    

HTML PDF Collect

Evaluation of the harmonic scalpel in open surgery for abdominal aortic aneurysm

Zeyu Wu, Zhe Chen, Lin Peng

Frontiers of Medicine 2012, Volume 6, Issue 1,   Pages 85-88 doi: 10.1007/s11684-012-0174-x

Abstract:

The harmonic scalpel is a hemostatic device primarily designed for use in laparoscopic surgery.During the last few years, many surgeons have begun to use the harmonic scalpel in open surgery.The aim of the present study is to determine the value of the harmonic scalpel in open operation forOpen surgery performed with the harmonic scalpel on 105 patients was compared with open operation usingThe hospital stay was shorter for the harmonic scalpel group than for the conventional surgery group

Keywords： abdominal aortic aneurysm     harmonic scalpel     minimally invasive    

HTML PDF Collect

System construction of a four-side primary permanent-magnet linear motor drive mechanical press

Jintao LIANG, Zhengfeng MING, Peida LI

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 4,   Pages 600-609 doi: 10.1007/s11465-020-0597-z

Abstract: motor (PPMLM) has a robust secondary structure and high force density and is appropriate for direct-driveThe structure of a four-side PPMLM drive press is presented based on our previous research.The entire press control system is constructed to realize various flexible forming processes.Field-circuit coupling simulation is applied to estimate the system’s performance.The proposed PPMLM drive press exhibits a fast dynamic response and favorable tracking precision and

Keywords： mechanical press     direct drive     primary permanent-magnet linear motor (PPMLM)     servo system     active disturbance    

HTML PDF Collect

Future Perspective for Key Technologies of Motor Drive System of New Energy Vehicles

Ding Rongjun, Liu Kan

Strategic Study of CAE 2019, Volume 21, Issue 3,   Pages 56-60 doi: 10.15302/J-SSCAE-2019.03.018

Abstract: text-align: justify;">This study investigates key technologies and development trends for the motor drivesystem of new energy vehicles, including power semiconductor devices and their packaging, smart gatedrivers, and the device-based system integration design, for the drive controllers; it also exploresThe study emphatically presents the development trends of the motor drive technologies for vehicles,and points out that permanent magnet synchronous motors will remain the main-stream drive motors in the

Keywords： new energy vehicle     motor drive system     permanent magnet synchronous motor    

HTML PDF Collect

Overview of condition monitoring and operation control of electric power conversion systems in direct-drive

Shoudao HUANG, Xuan WU, Xiao LIU, Jian GAO, Yunze HE

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 3,   Pages 281-302 doi: 10.1007/s11465-017-0442-1

Abstract:

Electric power conversion system (EPCS), which consists of a generator and power converter, is oneof the most important subsystems in a direct-drive wind turbine (DD-WT).component accounts for the most failures (approximately 60% of the total number) in the entire DD-WT system

Keywords： direct-drive wind turbine     electric power conversion system     condition monitoring     fault diagnosis     operation    

HTML PDF Collect

Electromagnetic interference modeling and suppression techniques in variable-frequency drive systems

Le YANG, Shuo WANG, Jianghua FENG

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 3,   Pages 329-353 doi: 10.1007/s11465-018-0466-1

Abstract: EMI) causes electromechanical damage to the motors and degrades the reliability of variable-frequency driveUnlike fundamental frequency components in motor drive systems, high-frequency EMI noise, coupled withthe parasitic parameters of the trough system, are difficult to analyze and reduce.In this article, EMI modeling techniques for different function units in a VFD system, including inductionbridge balance, active filter, and optimized modulation, are reviewed and compared based on the VFD system

Keywords： variable-frequency drive (VFD)     electromagnetic interference (EMI)     motor drive modeling     EMI noise suppression    

HTML PDF Collect

Solid-state transformer-based new traction drive system and control

Jianghua FENG, Jing SHANG, Zhixue ZHANG, Huadong LIU, Zihao HUANG

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 3,   Pages 411-426 doi: 10.1007/s11465-018-0467-0

Abstract:

A new type of traction drive system consisting of solid-state traction transformer (SSTT), invertercomponents is built in order to suit the demand of developing the next-generation electric traction systemFor the purpose of reducing system volume and weight and improving efficiency and grid-side power qualityrotating reference frame is presented to achieve unified control over fundamental active, reactive and harmonicThe carrier-interleaving phase shift modulation strategy is proposed to improve the harmonic performance

Keywords： solid-state traction transformer     high-voltage cascaded rectifier     LLC resonant converter     synchronous rotating reference frame     carrier-interleaving phase shift control     secondary pulsating voltage     beat frequency    

HTML PDF Collect

Multi-harmonic forced vibration and resonance of simple beams to moving vehicles

Frontiers of Structural and Civil Engineering   Pages 981-993 doi: 10.1007/s11709-023-0979-5

Abstract: beam, and investigated the forced modal oscillation and resonance behavior of this type of dynamic systemmultiple frequency-multiplication steady-state harmonics and one damped mono-frequency complementary harmonicThe analysis revealed that a moving load induces high-harmonic forced resonance amplification when theTo verify the occurrence of high-harmonic forced resonance, numerical tests were conducted on single-spanThe results reveal that the high-harmonic forced resonance may be significant for the investigated beams

Keywords： forced vibration     linear Euler beam     moving load     harmonic structure     frequency modulation     end restraints    

HTML PDF Collect

Power control of dual-motor electric drive for tracked vehicles

Yuan ZOU, Chengning ZHANG, Fengchun SUN, Jingbo WU,

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 1,   Pages 67-72 doi: 10.1007/s11465-009-0059-0

Abstract: The fundamental problem of the power control for the driving of a dual-motor drive electric tracked vehicleThe tracked vehicle and its electric drive system are mathematically modeled.Power control schemes of the dual-motor drive system is put forward, designed, and analyzed, includingthe distributed control system and the two control schemes speed-regulation and torque-regulation.The field experiment shows that the two types of drive control schemes realize the driving function of

Keywords： control     electric drive     tracked vehicle    

HTML PDF Collect

Drive system design and error analysis of the 6 degrees of freedom segment erector of shield tunneling

Hu SHI, Guofang GONG, Huayong YANG

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 3,   Pages 369-376 doi: 10.1007/s11465-011-0223-1

Abstract: establish the position and attitude error model, considering a number of factors such as the hydraulic driveDynamic simulations are carried out to obtain the controlling precision of electrohydraulic drive systems

Keywords： shield tunneling machine     segment erector     kinematics     position and attitude precision    

HTML PDF Collect

SCRaMbLE drive application of synthetic yeast genome

Jin Jin, Yuan Ma, Duo Liu

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 4,   Pages 832-834 doi: 10.1007/s11705-018-1749-0

Abstract:
HTML PDF Collect

Effects of elastic support on the dynamic behaviors of the wind turbine drive train

Shuaishuai WANG, Caichao ZHU, Chaosheng SONG, Huali HAN

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 3,   Pages 348-356 doi: 10.1007/s11465-017-0420-7

Abstract: flexibilities of the planet carrier and the housing, a coupled dynamic model was developed for a wind turbine driveThen, the dynamic behaviors of the drive train for different elastic support parameters were computedwere used to examine how different elastic support parameters influence the dynamic behaviors of the drivethat the elastic support parameters considerably influenced the dynamic behaviors of the wind turbine drivethis study provide the foundation for optimizing the elastic support stiffness of the wind turbine drive

Keywords： wind turbine drive train     elastic support     dynamic behavior     frequency response function    

HTML PDF Collect

Design and analysis of a new high frequency double-servo direct drive rotary valve

Muzhi ZHU,Shengdun ZHAO,Jingxiang LI

Frontiers of Mechanical Engineering 2016, Volume 11, Issue 4,   Pages 344-350 doi: 10.1007/s11465-016-0406-x

Abstract:

Researchers have investigated direct drive valve for many years to solve problems, such as fluid forceThis paper studied the high frequency double-servo direct drive rotary valve (DDRV), and proposed a novelstructure and drive method satisfying high reversing frequency and adequate quantity of flow.

Keywords： direct drive rotary valve     computational fluid dynamics (CFD)     flow regulation    

HTML PDF Collect

Title Author Date Type Operation

An investigation into the vibration of harmonic drive systems

M. Masoumi, H. Alimohammadi

Journal Article

Meshing stiffness property and meshing status simulation of harmonic drive under transmission loading

Journal Article

Hierarchical parameter estimation of DFIG and drive train system in a wind turbine generator

Xueping PAN, Ping JU, Feng WU, Yuqing JIN

Journal Article

Evaluation of the harmonic scalpel in open surgery for abdominal aortic aneurysm

Zeyu Wu, Zhe Chen, Lin Peng

Journal Article

System construction of a four-side primary permanent-magnet linear motor drive mechanical press

Jintao LIANG, Zhengfeng MING, Peida LI

Journal Article

Future Perspective for Key Technologies of Motor Drive System of New Energy Vehicles

Ding Rongjun, Liu Kan

Journal Article

Overview of condition monitoring and operation control of electric power conversion systems in direct-drive

Shoudao HUANG, Xuan WU, Xiao LIU, Jian GAO, Yunze HE

Journal Article

Electromagnetic interference modeling and suppression techniques in variable-frequency drive systems

Le YANG, Shuo WANG, Jianghua FENG

Journal Article

Solid-state transformer-based new traction drive system and control

Jianghua FENG, Jing SHANG, Zhixue ZHANG, Huadong LIU, Zihao HUANG

Journal Article

Multi-harmonic forced vibration and resonance of simple beams to moving vehicles

Journal Article

Power control of dual-motor electric drive for tracked vehicles

Yuan ZOU, Chengning ZHANG, Fengchun SUN, Jingbo WU,

Journal Article

Drive system design and error analysis of the 6 degrees of freedom segment erector of shield tunneling

Hu SHI, Guofang GONG, Huayong YANG

Journal Article

SCRaMbLE drive application of synthetic yeast genome

Jin Jin, Yuan Ma, Duo Liu

Journal Article

Effects of elastic support on the dynamic behaviors of the wind turbine drive train

Shuaishuai WANG, Caichao ZHU, Chaosheng SONG, Huali HAN

Journal Article

Design and analysis of a new high frequency double-servo direct drive rotary valve

Muzhi ZHU,Shengdun ZHAO,Jingxiang LI

Journal Article