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An Intelligent Non-Collocated Control Strategy for Ball-Screw Feed Drives with Dynamic Variations

Hui Liu, Jun Zhang, Wanhua Zhao

Engineering 2017, Volume 3, Issue 5,   Pages 641-647 doi: 10.1016/J.ENG.2017.04.007

Abstract:

The ball-screw feed drive has varying high-order dynamic characteristics due to flexibilities of theslender screw spindle and joints between components, and an obvious feature of non-collocated controlparameter interpolator updates the parameters of the filters in real time in order to cope with the feedNumerical verification of the effectiveness and robustness of the proposed strategy is shown for a real feed

Keywords： Ball-screw feed drives     Varying high-order dynamics     Non-collocated control     Modal characteristic modifier    

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Numerical solution, simulation and testing of the thermal dynamic characteristics of ball-screws

XIA Junyong, HU Youmin, WU Bo, SHI Tielin

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 1,   Pages 28-36 doi: 10.1007/s11465-008-0007-4

Abstract: This research focuses on the characteristics of how a ball-screw changes its temperature correspondingThe temperature distribution for the ball-screw at different times and directions is shown.By simulating and modeling the temperature field and thermal deformation of the ball-screw under periodicallyvarying heat sources, this paper describes the thermal dynamic characteristics of the ball-screw underBy testing the thermal dynamic characteristics of the ball-screw, the numerical solution is validated

Keywords： numerical solution     temperature corresponding     temperature distribution     end-most     ball-screw    

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Influence of Rigidity of Feed System With Ball Screw in NC Lathe on Positioning Precision

Wu Nanxing,Hu Rufu,Sun Qinghong

Strategic Study of CAE 2004, Volume 6, Issue 9,   Pages 46-49

Abstract:

Rigidity of feed system with ball screw in NC lathe has a major influence on loss of momentum andBased on the spring mechanics model and the quality of the feed system, the analytic formulation forthe effect of the transition and torsion rigidity of the feed system on the loss of momentum have beenbasis for designing the structure, reducing loss of momentum and increasing positioning precision of feed

Keywords： NC lathe     rigidity     loss of momentum     positioning precision    

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Simulation of cottonseed cake melt flow in metering zone of a single screw extruder

Hong HE, Jianguo ZHOU,

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 3,   Pages 263-269 doi: 10.1007/s11705-009-0276-4

Abstract: Research on the extrusion of natural polymers (food, feed, etc.) is relatively new due to the complexinfluence of moisture content, among other process variables, is the most significant, followed by screwSome interaction exists between these two variables and the screw speed effect becomes marginal at high

Keywords： quasi-three-dimensional     rheological     viscosity     processing     influence    

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Induction motors variable speed drives diagnosis through rotor resistance monitoring

K. YAHIA, S. ZOUZOU, F. BENCHABANE

Frontiers in Energy 2012, Volume 6, Issue 4,   Pages 420-426 doi: 10.1007/s11708-012-0192-z

Abstract: Induction motor driven by vector control method makes high performance control of torque and speed possible. The decoupling of flux and electromagnetic torque obtained by field orientation depends on the precision and the accuracy of the estimated states. Rotor asymmetries lead to perturbations of air gap flux patterns in induction machines. These perturbations in flux components affect the electromagnetic torque, as well as stator currents and voltages. This paper first investigates the control of the induction motor using an extended Kalman filter (EKF) for a direct field-oriented control. It then studies the broken rotor bars (BRBs) fault by the monitoring the rotor resistance. The hypothesis on which the detection is based is that the apparent rotor resistance of the motor will increase when a rotor bar breaks. The rotor resistance is estimated and compared with its nominal value to detect BRBs fault. The EKF estimates the rotor flux, speed and rotor resistance on line by using only measurements of the stator voltages and currents. Simulation results show the effectiveness of the proposed method in the cases of load torque perturbation and speed reversion.

Keywords： induction motor     vector control     broken rotor bars (BRBs) diagnostic     extended Kalman filter (EKF)    

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characterization of nanocrystalline ZrO2-7%Y2O3 powders for thermal barrier coatings by high-energy ball

Kirsten BOBZIN, Lidong ZHAO, Thomas SCHLAEFER, Thomas WARDA

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 2,   Pages 176-181 doi: 10.1007/s11465-011-0220-4

Abstract:

High-energy ball milling is an effective method to produce nanocrystalline oxides.In this study, a conventional ZrO2-7%Y2O3spray powder was ball-milledBall-milling led to lattice microstrains.

Keywords： nanostrucured powders     yttria stabilized zirconia (YSZ)     high-energy ball milling     thermal barrier coatings    

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Computer-Aided Design System for CP Single-Screw Compressor

SHEN Jing-feng, YAO Fu-sheng

Frontiers of Mechanical Engineering 2006, Volume 1, Issue 1,   Pages 21-25 doi: 10.1007/s11465-005-0018-3

Abstract:

To design various optimum parameters and simulate the working process of CP single-screw compressor, the Computer-Aided Design (CAD) system for the CP single-screw compressor has been established.function and animator simulation function based on analyzing the working principle of the CP single-screwThe experimental results show that the CAD system for the CP single-screw compressor is practical and

Keywords： CP single-screw     database technology     simulation technology     programming technology     animator simulation    

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Augmented hydrogen production by gasification of ball milled polyethylene with Ca(OH)

Giovanni Cagnetta, Kunlun Zhang, Qiwu Zhang, Jun Huang, Gang Yu

Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 1, doi: 10.1007/s11783-019-1096-5

Abstract:

PE ball milling pretreatment induces higher H2 production

Keywords： Hydrogen production     Gasification     Plastic waste     High energy ball milling    

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Effect of surgical factors on the augmentation of cement-injectable cannulated pedicle screw fixation

Haolin Sun, Chun Liu, Shunlun Chen, Yanjie Bai, Huilin Yang, Chunde Li, Lei Yang

Frontiers of Medicine 2019, Volume 13, Issue 5,   Pages 590-601 doi: 10.1007/s11684-019-0710-z

Abstract: Bone cement-augmented pedicle screw system demonstrates great efficacy in spinal disease treatments.injectable and biodegradable calcium phosphate-based nanocomposite (CPN) for the augmentation of pedicle screwSurgical factors in CICPs application, such as injection force, tapping technique, screw diameter, andpedicle screw loosening scenarios, were studied in comparison with those in PMMA.and anti-pullout ability of CPN were not affected by the surgical factors of tapping technique and screw

Keywords： bone cement     pedicle screw     degenerative spinal diseases     calcium phosphate     injectable    

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Bioleaching of copper from pre and post thermally activated low grade chalcopyrite contained ball mill

Sandeep PANDA, Nilotpala PRADHAN, Umaballav MOHAPATRA, Sandeep K. PANDA, Swagat S. RATH, Danda S. RAO, Bansi D. NAYAK, Lala B. SUKLA, Barada K. MISHRA

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 2,   Pages 281-293 doi: 10.1007/s11783-013-0484-5

Abstract: Bioleaching of a low grade chalcopyrite (ball mill spillage material) was tested for copper recovery

Keywords： ball mill spillage     thermal activation     bioleaching     copper    

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Identification of thermal error in a feed system based on multi-class LS-SVM

Chao JIN, Bo WU, Youmin HU, Yao CHENG

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 1,   Pages 47-54 doi: 10.1007/s11465-012-0307-6

Abstract:

Research of thermal characteristics has been a key issue in the development of high-speed feed systemThe thermal positioning error of a ball-screw is one of the most important objects to consider for high-accuracyis identified with the variance and mean square value of the temperatures of supporting bearings and screw-nutA series of experiments were carried out on a self-made quasi high-speed feed system experimental benchThe results show that the recommended model can be used to predict the thermal error of a feed system

Keywords： least squares support vector machine (LS-SVM)     feed system     thermal error     precision machining    

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Explicit optimization method for cutting-screw-thread on the basis of dual-RSM

Zhengbao LEI, Shubin WEI, Qingyun DU

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 4,   Pages 423-430 doi: 10.1007/s11465-010-0109-7

Abstract: To obtain the explicit function for optimizing the cutting-screw-thread (CST) in crash, the simulations

Keywords： vehicle engineering     crash     safety     explicit method     response surface method    

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A deep feed-forward neural network for damage detection in functionally graded carbon nanotube-reinforced

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 6,   Pages 1453-1479 doi: 10.1007/s11709-021-0767-z

Abstract: This paper proposes a new Deep Feed-forward Neural Network (DFNN) approach for damage detection in functionally

Keywords： damage detection     deep feed-forward neural networks     functionally graded carbon nanotube-reinforced composite    

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Effect of friction coefficients on the dynamic response of gear systems

BALL, Xuejun LI

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 3,   Pages 397-405 doi: 10.1007/s11465-017-0415-4

Abstract:

The inevitable deterioration of the lubrication conditions in a gearbox in service can change the tribological properties of the meshing teeth. In turn, such changes can significantly affect the dynamic responses and running status of gear systems. This paper investigates such an effect by utilizing virtual prototype technology to model and simulate the dynamics of a wind turbine gearbox system. The change in the lubrication conditions is modeled by the changes in the friction coefficients, thereby indicating that poor lubrication causes not only increased frictional losses but also significant changes in the dynamic responses. These results are further demonstrated by the mean and root mean square values calculated by the simulated responses under different friction coefficients. In addition, the spectrum exhibits significant changes in the first, second, and third harmonics of the meshing components. The findings and simulation method of this study provide theoretical bases for the development of accurate diagnostic techniques.

Keywords： dynamic response     friction coefficient     wind loads     wind turbine gearbox    

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Kinematic error separation on five-axis NC machine tool based on telescoping double ball bar

Min WANG, Jianzhong HU, Tao ZAN

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 4,   Pages 431-437 doi: 10.1007/s11465-010-0110-1

Abstract: Telescoping double ball bar is used to measure the relative distance between the spindle and the worktableFinally, the value measured by telescoping double ball bar is substituted into the model to obtain kinematic

Keywords： error modeling     error separation     telescoping double ball bar     five-axis numerical control (NC) machining    

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Title Author Date Type Operation

An Intelligent Non-Collocated Control Strategy for Ball-Screw Feed Drives with Dynamic Variations

Hui Liu, Jun Zhang, Wanhua Zhao

Journal Article

Numerical solution, simulation and testing of the thermal dynamic characteristics of ball-screws

XIA Junyong, HU Youmin, WU Bo, SHI Tielin

Journal Article

Influence of Rigidity of Feed System With Ball Screw in NC Lathe on Positioning Precision

Wu Nanxing,Hu Rufu,Sun Qinghong

Journal Article

Simulation of cottonseed cake melt flow in metering zone of a single screw extruder

Hong HE, Jianguo ZHOU,

Journal Article

Induction motors variable speed drives diagnosis through rotor resistance monitoring

K. YAHIA, S. ZOUZOU, F. BENCHABANE

Journal Article

characterization of nanocrystalline ZrO2-7%Y2O3 powders for thermal barrier coatings by high-energy ball

Kirsten BOBZIN, Lidong ZHAO, Thomas SCHLAEFER, Thomas WARDA

Journal Article

Computer-Aided Design System for CP Single-Screw Compressor

SHEN Jing-feng, YAO Fu-sheng

Journal Article

Augmented hydrogen production by gasification of ball milled polyethylene with Ca(OH)

Giovanni Cagnetta, Kunlun Zhang, Qiwu Zhang, Jun Huang, Gang Yu

Journal Article

Effect of surgical factors on the augmentation of cement-injectable cannulated pedicle screw fixation

Haolin Sun, Chun Liu, Shunlun Chen, Yanjie Bai, Huilin Yang, Chunde Li, Lei Yang

Journal Article

Bioleaching of copper from pre and post thermally activated low grade chalcopyrite contained ball mill

Sandeep PANDA, Nilotpala PRADHAN, Umaballav MOHAPATRA, Sandeep K. PANDA, Swagat S. RATH, Danda S. RAO, Bansi D. NAYAK, Lala B. SUKLA, Barada K. MISHRA

Journal Article

Identification of thermal error in a feed system based on multi-class LS-SVM

Chao JIN, Bo WU, Youmin HU, Yao CHENG

Journal Article

Explicit optimization method for cutting-screw-thread on the basis of dual-RSM

Zhengbao LEI, Shubin WEI, Qingyun DU

Journal Article

A deep feed-forward neural network for damage detection in functionally graded carbon nanotube-reinforced

Journal Article

Effect of friction coefficients on the dynamic response of gear systems

BALL, Xuejun LI

Journal Article

Kinematic error separation on five-axis NC machine tool based on telescoping double ball bar

Min WANG, Jianzhong HU, Tao ZAN

Journal Article