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Piezoelectric inertial robot for operating in small pipelines based on stick-slip mechanism: modeling

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 3, doi: 10.1007/s11465-022-0697-z

Abstract: A piezoelectric inertial pipeline robot using a “stick-slip” mechanism was proposed to address this requirementExperimental results show that the proposed pipeline robot with inertial stick-slip mechanism has a great

Keywords： pipeline robot     piezoelectric     inertial drive     stick-slip     large load capacity     dynamics model     small    

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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 with

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

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Modeling and analysis of controllable output property of cantilever-beam inertial sensors based on magnetic

Guixiong LIU, Peiqiang ZHANG, Chen XU

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 2,   Pages 129-133 doi: 10.1007/s11465-009-0035-8

Abstract: Magnetic fluid is first introduced into the traditional cantilever-beam senor. Based on the property of the cantilever-beam and the novel controllable mag-viscosity of magnetic fluid, the output of cantilever-beam sensors is under control so that the controllable output of the sensors can be realized. The mathematical model of the sensors is established and analyzed. The dynamic control function and the following educational results, which include the two curves of the displacement ratio and phase function with the different damping ratio and frequency ratio, are obtained based on the model. The result shows that it is valid to realize the controllable output of the sensors by controlling the viscosity of the magnetic fluid, and finally the expanded measurement range can be realized.

Keywords： sensors     magnetic fluid     property of mag-viscosity     controllable output    

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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 field experiment shows that the two types of drive control schemes realize the driving function of

Keywords： control     electric drive     tracked vehicle    

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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.

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

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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:
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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    

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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    

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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 driveFirstly, 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    

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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    

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CRITICAL PROCESSES AND MAJOR FACTORS THAT DRIVE NITROGEN TRANSPORT FROM FARMLAND TO SURFACE WATER BODIES

Frontiers of Agricultural Science and Engineering 2023, Volume 10, Issue 4,   Pages 541-552 doi: 10.15302/J-FASE-2023518

Abstract:

Agricultural non-point source pollution is increasingly an important issue affecting surface water quality. Currently, the majority of the studies on nitrogen loss have focused on the agricultural field scale, however, the response of surface water quality at the watershed scale into the nitrogen loss at the field scale is poorly understood. The present study systematically reviewed the critical processes and major factors that nitrogen transport from farm fields to surface water bodies. The critical processes of farmland nitrogen entering surface water bodies involve the processes of nitrogen transport from farmland to ditches and the transformation processes of nitrogen during migration in ditches/rivers. Nitrogen transport from farmland to ditches is one of the prerequisites and critical processes for farmland nitrogen transport to surface water bodies. The transformation of nitrogen forms in ditches/rivers is an intermediate process in the migration of nitrogen from farmland to surface water bodies. Nitrogen loss from farmland is related to soil storage and exogenous inputs. Therefore, nitrogen input management should not only consider the current input, but also the contribution of soil storage due to the historical surpluses. Ditches/rivers have a strong retention capacity for nitrogen, which will significantly affect the process of farmland nitrogen entering surface water bodies. The factors affecting nitrogen transformation in river/ditches can be placed in four categories: (1) factors affecting hydraulic retention time, (2) factors affecting contact area, (3) factors affecting biological activity, and (4) forms and amount of nitrogen loading to river/ditches. Ditch systems are more biologically (including plants and microbes) active than rivers with biological factors having a greater influence on nitrogen transformation. When developing pollution prevention and control strategies, ecological ditches can be constructed to increase biological activity and reduce the amount of surplus nitrogen entering the water body. The present research should be valuable for the evaluation of environment impacts of nitrogen loss and the non-point source pollution control.

Keywords： nitrogen     loss from soil     transformation     farm field scale     watershed scale    

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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 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    

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An experimental characterization of human torso motion

Daniele CAFOLLA,I-Ming CHEN,Marco CECCARELLI

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 4,   Pages 311-325 doi: 10.1007/s11465-015-0352-z

Abstract: In this paper, a method is proposed to analyze the behavior of the human torso by using inertial and

Keywords： experimental biomechanics     human torso     analysis     inertial sensor     characterization    

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Novel drive mechanism for in-tube micro robots

CHEN Yangzhi, XING Guangquan, PENG Xuefei, LIU Wenguang, YAO Huaping

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 1,   Pages 94-98 doi: 10.1007/s11465-007-0016-8

Abstract: However, conventional transmission methods are unfit to drive in-tube micro robots.A novel micro drive mechanism called the micro-elastic-meshing-wheel is presented in this paper.The mechanical model of the novel drive mechanism is built, and the maximal transmission force is deducedThen, sufficient experiments are carried out to test maximal transmission force produced by the novel driveThe calculation and experiment results show that the novel drive mechanism can transmit sufficient power

Keywords： limited     conventional transmission     maximal transmission     upright     calculation    

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Multi-objective design optimization of a large-scale direct-drive permanent magnet generator for wind

Arash Hasssanpour ISFAHANI,Amirhossein Haji-Seyed BOROUJERDI,Saeed HASANZADEH

Frontiers in Energy 2014, Volume 8, Issue 2,   Pages 182-191 doi: 10.1007/s11708-014-0320-z

Abstract: This paper presents a simultaneous multi-objective optimization of a direct-drive permanent magnet synchronous

Keywords： permanent magnet synchronous generator     wind turbine     direct-drive     multi-objective optimization     cost     mass    

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Title Author Date Type Operation

Piezoelectric inertial robot for operating in small pipelines based on stick-slip mechanism: modeling

Journal Article

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

Le YANG, Shuo WANG, Jianghua FENG

Journal Article

Modeling and analysis of controllable output property of cantilever-beam inertial sensors based on magnetic

Guixiong LIU, Peiqiang ZHANG, Chen XU

Journal Article

Power control of dual-motor electric drive for tracked vehicles

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

Journal Article

An investigation into the vibration of harmonic drive systems

M. Masoumi, H. Alimohammadi

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

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

Xueping PAN, Ping JU, Feng WU, Yuqing JIN

Journal Article

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

Journal Article

CRITICAL PROCESSES AND MAJOR FACTORS THAT DRIVE NITROGEN TRANSPORT FROM FARMLAND TO SURFACE WATER BODIES

Journal Article

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

Jintao LIANG, Zhengfeng MING, Peida LI

Journal Article

An experimental characterization of human torso motion

Daniele CAFOLLA,I-Ming CHEN,Marco CECCARELLI

Journal Article

Novel drive mechanism for in-tube micro robots

CHEN Yangzhi, XING Guangquan, PENG Xuefei, LIU Wenguang, YAO Huaping

Journal Article

Multi-objective design optimization of a large-scale direct-drive permanent magnet generator for wind

Arash Hasssanpour ISFAHANI,Amirhossein Haji-Seyed BOROUJERDI,Saeed HASANZADEH

Journal Article