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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 forceThe structure of the rotary valve has received considerable research interest because of its favorableThis 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.of the flow quantity and valve opening as a result of the fan-shaped flow ports.

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

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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 proposedhigh-precision positioning ability, simple structure and only one percent the cost of traditional impact drive

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

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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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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: EPCS), which consists of a generator and power converter, is one of the most important subsystems in a direct-drive

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

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Control of homogeneous charge compression ignition combustion in a two-cylinder gasoline direct injectionengine with negative valve overlap

WANG Zhi, WANG Jianxin, SHUAI Shijin, MA Qingjun, TIAN Guohong

Frontiers in Energy 2007, Volume 1, Issue 3,   Pages 311-315 doi: 10.1007/s11708-007-0045-3

Abstract: In this paper, HCCI combustion was studied in a two-cylinder gasoline direct injection (GDI) engine withnegative valve overlap (NVO).A two-stage gasoline direct injection strategy combined with negative valve overlap was used to control

Keywords： Homogeneous     control     combustion     consumption     extension    

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Study on dynamics of rotary swaging machine driven by servo motor

Song Tao,Zhao Shengdun,Yan Guanhai,Liu Hongbao

Strategic Study of CAE 2013, Volume 15, Issue 1,   Pages 63-67

Abstract:

In this paper, the servo motor driven swaging machine was designed; profile of striker was derived from cycloidal motion curve and its motion features were analyzed. The maximum load of swaging machine was calculated by upper bound method. According to the calculation, the maximum load of swaging machine decreased with die angle increasing, but on the other hand, the push force on perform increased. The compromised die angle in the field was 5°~ 15°.

Keywords： rotary swaging     servo drive     upper bound method    

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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: linear 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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Novel piezoelectric pump with “E”-shaped valve found from sub-experiments

Jianhui ZHANG, Jun HUANG, Xiaoqi HU, Qixiao XI,

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 2,   Pages 212-218 doi: 10.1007/s11465-010-0009-x

Abstract: Increasing the driving frequency of a piezoelectric vibrator can resolve the bottleneck of low flow in a valveHowever, a piezoelectric pump of a traditional valve body presents the hysteretic nature of the valveFirst, through the sub-experiment on various parameters of the plate valve of a piezoelectric pump, thethe hysteretic nature of the valve, were discovered.Second, an “E”-shaped valve and piezoelectric pump with an “E”-shaped valve (

Keywords： piezoelectricity     valve     pump     experiment     “     E”     -shaped valve    

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Soybean drying characteristics in microwave rotary dryer with forced convection

Ruifang WANG, Zhanyong LI, Yanhua LI, Jingsheng YE

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 3,   Pages 289-292 doi: 10.1007/s11705-009-0022-y

Abstract: A new hybrid drying technique by combining microwave and forced convection drying within a rotary drum, i.e., microwave rotary drying, was developed with the purpose to improve the uniformity of microwaveIn a laboratory microwave rotary dryer, rewetted soybean was utilized as experimental material to study

Keywords： cracking     microwave     rotary drying     soybean    

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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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The application of DX rotary and squeezed pile on railway bridge engineering

Zhang Dehua,Wang Mengshu

Strategic Study of CAE 2009, Volume 11, Issue 7,   Pages 92-96

Abstract:

Squeezed pile with plates (being DX pile) is a new type pile that has been developed in recent years. Based on common cast-in-place pile, it adequately avails itself of the bearing capacity of each soil hard layer. According to the difference of design bearing capacity and engineering geological condition, it consists of plates by the squeezing equipment of hydraulic pressure in the different parts of DX pile. DX pile is a sort of change-section pile and is priority to shaft resistance between friction pile and shaft pile. Making use of the tip resistance of breaches and plates and shaft resistance around the branches is in order to add the shaft resistance and tip resistance. In situ test has shown that it can sharply improve the bearing capacity of pile. DX squeezed pile cannot only be applied in clay, silt, sand, weathering rock mass and residual deposits of soil, but also can be used in interactive layers of gravel,clay,and sand. The diameter of DX squeezed pile can be 400~2 000 mm,and the length of it can be more than 60 m. It is a new type of pile which has a bright future for application. Now it has got the extensive application in high building, bridge,civil engineering and high structure. Due to it's good bearing capacity and low settlements,it can an be applied and promoted to different foundation engineering of railway bridge engineering,and would get a good prospect of application and extension.

Keywords： DX pile     DX rotary and squeezed pile     bearing capacity    

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Nonlinear sealing force of a seawater balance valve used in an 11000-meter manned submersible

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 1, doi: 10.1007/s11465-022-0726-y

Abstract: Balance valve is a core component of the 11000-meter manned submersible “struggle,” and its sealing performanceanalytical–numerical–experimental (ANE) model is proposed to obtain the minimum sealing force, ensuring no leakage at the valveFinally, the minimum sealing force equation is applied in a balance valve to be experimented using aThe balance valve designed through the minimum sealing force equation is leak-free in the experiment.Thus, the minimum sealing force equation is suitable for the ultrahigh pressure balance valve and has

Keywords： seawater balance valve     sealing performance     hybrid ANE model     FEM     minimum sealing force equation    

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Effectiveness analysis and optimum design of the rotary regenerator for thermophotovoltaic (TPV) system

Xi WU, Hong YE, Jianxiang WANG, Jie HE, Jian YANG

Frontiers in Energy 2012, Volume 6, Issue 2,   Pages 193-199 doi: 10.1007/s11708-012-0184-z

Abstract: The influence of the period of rotation on the effectiveness of the thermophotovoltaic (TPV) rotary regeneratorBased on the modified model, the influence of geometrical parameters of rotary regenerator on the effectivenessThe results demonstrate that the effectiveness increases with the increase of the rotary regenerator

Keywords： thermophotovoltaic (TPV) system     rotary regenerator     effectiveness     carryover loss    

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Artificial bee colony optimization for economic dispatch with valve point effect

Yacine LABBI,Djilani Ben ATTOUS,Belkacem MAHDAD

Frontiers in Energy 2014, Volume 8, Issue 4,   Pages 449-458 doi: 10.1007/s11708-014-0316-8

Abstract: This paper presents the well-known power system ED problem solution considering valve-point effect byhas been applied to various test systems with incremental fuel cost function, taking into account the valve-point

Keywords： artificial bee colony (ABC) algorithm     economic dispatch (ED)     valve-point effect     optimization    

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Development of a novel two-stage proportional valve with a pilot digital flow distribution

Qiang GAO, Yuchuan ZHU, Changwen WU, Yulei JIANG

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 2,   Pages 420-434 doi: 10.1007/s11465-020-0622-2

Abstract: of improving the dynamic performance, reliability, and digitization of the traditional proportional valve, a novel two-stage proportional valve with a pilot digital flow distribution is proposed from the viewpointof the dual nozzle-flapper valve’s working principle.First, the working principle and mathematical model of the proposed valve are determined.’s spring) on the main valve’s motion are analyzed on the basis of theory, simulation, and experiment

Keywords： two-stage proportional valve     digital flow distribution     high-speed on/off valve     position tracking characteristic    

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Title Author Date Type Operation

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

Muzhi ZHU,Shengdun ZHAO,Jingxiang LI

Journal Article

Impact drive rotary precision actuator with piezoelectric bimorphs

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

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

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

Control of homogeneous charge compression ignition combustion in a two-cylinder gasoline direct injectionengine with negative valve overlap

WANG Zhi, WANG Jianxin, SHUAI Shijin, MA Qingjun, TIAN Guohong

Journal Article

Study on dynamics of rotary swaging machine driven by servo motor

Song Tao,Zhao Shengdun,Yan Guanhai,Liu Hongbao

Journal Article

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

Jintao LIANG, Zhengfeng MING, Peida LI

Journal Article

Novel piezoelectric pump with “E”-shaped valve found from sub-experiments

Jianhui ZHANG, Jun HUANG, Xiaoqi HU, Qixiao XI,

Journal Article

Soybean drying characteristics in microwave rotary dryer with forced convection

Ruifang WANG, Zhanyong LI, Yanhua LI, Jingsheng YE

Journal Article

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

Le YANG, Shuo WANG, Jianghua FENG

Journal Article

The application of DX rotary and squeezed pile on railway bridge engineering

Zhang Dehua,Wang Mengshu

Journal Article

Nonlinear sealing force of a seawater balance valve used in an 11000-meter manned submersible

Journal Article

Effectiveness analysis and optimum design of the rotary regenerator for thermophotovoltaic (TPV) system

Xi WU, Hong YE, Jianxiang WANG, Jie HE, Jian YANG

Journal Article

Artificial bee colony optimization for economic dispatch with valve point effect

Yacine LABBI,Djilani Ben ATTOUS,Belkacem MAHDAD

Journal Article

Development of a novel two-stage proportional valve with a pilot digital flow distribution

Qiang GAO, Yuchuan ZHU, Changwen WU, Yulei JIANG

Journal Article