Log in

Relevant bibliographies by topics / Micro-stepping / Journal articles

To see the other types of publications on this topic, follow the link: Micro-stepping.

Journal articles on the topic 'Micro-stepping'

Author: Grafiati

Published: 4 June 2021

Last updated: 5 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Micro-stepping.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Yang, Nan, Yi Ming Wei, and Jiao Yu Liu. "Research on Micro-Stepping Driving System of Three-Phase Hybrid Stepping Motor." Advanced Materials Research 744 (August 2013): 253–57. http://dx.doi.org/10.4028/www.scientific.net/amr.744.253.

Full text

Abstract:

Uniform constant amplitude rotating current vector subdivision and SVPWM technology are applied to micro-stepping driving system of three-phase hybrid stepping motor. Decompose the stator current vector of the stepping motor into the torque current and the magnetizing current, and then control the currents of decomposition, which makes the amplitude of the resultant stator current vector remain the same. Simulation results show that the designed micro-stepping driving system realizes equal stepper angle, constant torque, and arbitrary variable micro-stepping driving. The use of micro-stepping driving technology improves the stepping motors control accuracy and stability, which promotes the application range of stepping motor and has good practical value.

APA, Harvard, Vancouver, ISO, and other styles

2

NAKAGAWA, Yasuichi. "Micro stepping motor for wrist watch." Journal of the Japan Society for Precision Engineering 54, no. 9 (1988): 1662–66. http://dx.doi.org/10.2493/jjspe.54.1662.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Ni, Qi, Daniel E. Capecci, and Nathan B. Crane. "Open-loop electrowetting actuation with micro-stepping." Sensors and Actuators A: Physical 247 (August 2016): 579–86. http://dx.doi.org/10.1016/j.sna.2016.06.034.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Munadi, M., Aulia Syukri, Joga Dharma Setiawan, and Mochammad Ariyanto. "Rancang-bangun prototipe mesin CNC laser engraving dua sumbu menggunakan diode laser." Jurnal Teknik Mesin Indonesia 13, no. 1 (April 8, 2018): 32. http://dx.doi.org/10.36289/jtmi.v13i1.88.

Full text

Abstract:

The development of industrial technology can help the manufacturing industry for producing quality products. One tool that can help produce such quality products is CNC machines. As we know that the price of CNC machines is not cheap. Therefore, in this article, the researchers suggest how to design a prototype CNC laser engraving machine for the acrylic workpiece. The machine is designed as cheaply as possible but provide great benefits. The machine frame is designed using aluminum extrusion, the laser uses a laser diode type, the actuators of axis uses the stepper motor, and the control software uses a USB CNC controller. The dimension of workpiece that can be machined is 600 mm x 300 mm x 2 mm. The optimization of the stepper motor movement system is chosen 1/8 micro stepping after testing full-step method, half-step, 1/8 micro stepping, and 1/16 micro stepping. Using a 2.5 watt diode laser module, the radiant heat received by the acrylic workpiece during the engraving process is 558.8 x 10-5 cal/sec.

APA, Harvard, Vancouver, ISO, and other styles

5

Chu, Xiangcheng, Zengping Xing, Wen Gong, Longtu Li, and Zhilun Gui. "Vibration analysis of stepping piezoelectric micro-motor using wiggle mode." Materials Science and Engineering: B 99, no. 1-3 (May 2003): 306–8. http://dx.doi.org/10.1016/s0921-5107(02)00559-7.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

KOBAYASHI, Yuko, Hiroshi TAKAHASHI, Shinji TAKAKURA, Yasuyuki YOKONO, Hisato MATSUMIYA, Izumi KINOSHITA, and Toshiro HIGUCHI. "Experiment of Micro-Stepping Actuator by Electromagnetic Repulsion Impact Force." Proceedings of the JSME annual meeting 2004.7 (2004): 341–42. http://dx.doi.org/10.1299/jsmemecjo.2004.7.0_341.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Chen, Ning, Jieji Zheng, Xianliang Jiang, Shixun Fan, and Dapeng Fan. "Analysis and control of micro-stepping characteristics of ultrasonic motor." Frontiers of Mechanical Engineering 15, no. 4 (March 23, 2020): 585–99. http://dx.doi.org/10.1007/s11465-019-0577-3.

Full text

Abstract:

AbstractMicro-stepping motion of ultrasonic motors satisfies biomedical applications, such as cell operation and nuclear magnetic resonance, which require a precise compact-structure non-magnetization positioning device. When the pulse number is relatively small, the stopping characteristics have a non-negligible effect on the entire stepwise process. However, few studies have been conducted to show the rule of the open-loop stepwise motion, especially the shutdown stage. In this study, the modal differences of the shutdown stage are found connected with amplitude and velocity at the turn-off instant. Changes of the length in the contact area and driving zone as well as the input currents, vibration states, output torque, and axial pressure are derived by a simulation model to further explore the rules. The speed curves and vibration results in functions of different pulse numbers are compared, and the stepwise motion can be described by a two-stage two-order transfer function. A test workbench based on the Field Programmable Gate Array is built for acquiring the speed, currents, and feedback voltages of the startup-shutdown stage accurately with the help of its excellent synchronization performances. Therefore, stator vibration, rotor velocity, and terminal displacements under different pulse numbers can be compared. Moreover, the two-stage two-order model is identified on the stepwise speed curves, and the fitness over 85% between the simulation and test verifies the model availability. Finally, with the optimization of the pulse number, the motor achieves 3.3 µrad in clockwise and counterclockwise direction.

APA, Harvard, Vancouver, ISO, and other styles

8

Yoneyama, Satoru, and Shuichi Arikawa. "Instantaneous phase-stepping interferometry based on a pixelated micro-polarizer array." Theoretical and Applied Mechanics Letters 6, no. 4 (July 2016): 162–66. http://dx.doi.org/10.1016/j.taml.2016.05.004.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Se-Hyun Rhyu and Byung-Il Kwon. "Newly structured micro permanent magnet type stepping motor with claw-poles." IEEE Transactions on Magnetics 42, no. 4 (April 2006): 1331–34. http://dx.doi.org/10.1109/tmag.2006.872482.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Yang, S. M., F. C. Lin, and M. T. Chen. "Micro-Stepping Control of a Two-Phase Linear Stepping Motor With Three-Phase VSI Inverter for High-Speed Applications." IEEE Transactions on Industry Applications 40, no. 5 (September 2004): 1257–64. http://dx.doi.org/10.1109/tia.2004.834040.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

Xiang, Hua Zhong, Lan Chen, Yi Wang Bao, and Yi Ni Chang. "Data Acquisition and Control System of Hip Joint Simulator Based on LabVIEW and DSP." Key Engineering Materials 492 (September 2011): 459–62. http://dx.doi.org/10.4028/www.scientific.net/kem.492.459.

Full text

Abstract:

Hip joint simulator is a device, which is used to investigate the mechanical and frictional wear properties of the biological prosthesis under simulating physiological environment of human hip joint. The simulator is very useful for the final clinical application of the prosthesis. In this research, a data acquisition and control system, which was based on the Digital Signal Processor (DSP) and LabVIEW serial communication technology, was designed for the hip joint simulator. In order to monitoring the simulating mode of motion and stress state of prosthesis, the pressure stepping motor and the angle stepping motor were controlled by the micro-stepping step motor controllers. The angular displacement and pressure signals were collected by the sensors, respectively. Thus, the motion and stress state curves were abtained. This system provided a more accurate platform for in vitro study of the tribological properties of hip joint prosthesis.

APA, Harvard, Vancouver, ISO, and other styles

12

Yoneyama, S., H. Kikuta, and K. Moriwaki. "Instantaneous phase-stepping interferometry using polarization imaging with a micro-retarder array." Experimental Mechanics 45, no. 5 (October 2005): 451–56. http://dx.doi.org/10.1007/bf02427994.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Takezawa, Hideki, Naotake Mohri, Kouhei Asano, and Yasunori Kodama. "Development of Micro Electrical Discharge Machine." International Journal of Automation Technology 2, no. 2 (March 5, 2008): 124–30. http://dx.doi.org/10.20965/ijat.2008.p0124.

Full text

Abstract:

Micro-EDM Machining Center with rapidly sharpened electrodes was developed in order to implement the precision micromachining. With the proposed machining system, the hybrid system of thin electrode forming and micro-EDM can be carried out on the same machine. It is the hybrid system that combined EDM with ECM. The developed machining system consists of two types of driving devices for gap distance control. One is stepping motor controlled stage and the other is piezo electric tube. The former one is for coarse adjustment and the latter is for fine adjustment. In this paper, we describe the characteristics of the developed machining system with some micromachining results.

APA, Harvard, Vancouver, ISO, and other styles

14

Kim, Dae-Kwan, Ki-Lyuk Yong, Hong-Taek Choi, and Gee-Yong Park. "Micro-vibration Test on a Two-axis Gimbal Antenna System with Stepping Motors." Transactions of the Korean Society for Noise and Vibration Engineering 22, no. 11 (November 20, 2012): 1042–48. http://dx.doi.org/10.5050/ksnve.2012.22.11.1042.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

Hu, Xian, Salma Jalal, Michael Sheetz, Oddmund Bakke, and Felix Margadant. "Micro-stepping extended focus reduces photobleaching and preserves structured illumination super-resolution features." Journal of Cell Science 133, no. 10 (April 7, 2020): jcs240796. http://dx.doi.org/10.1242/jcs.240796.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

TAKAKURA, Shinji, Hiroshi TAKAHASHI, Yuko KOBAYASHI, Yasuyuki YOKONO, Hisato MATSUMIYA, Izumi KINOSHITA, and Toshiro HIGUCHI. "A Position Control System of Micro-Stepping Actuator by Electromagnetic Repulsion Impact Force." Proceedings of the JSME annual meeting 2004.7 (2004): 343–44. http://dx.doi.org/10.1299/jsmemecjo.2004.7.0_343.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Liu, Chun Jie, and Bing Shou Zhu. "Development of a Measuring System for Stiffness Evaluation of Micro Torsion Bar." Applied Mechanics and Materials 33 (October 2010): 190–94. http://dx.doi.org/10.4028/www.scientific.net/amm.33.190.

Full text

Abstract:

For the micro torsion bar used in inertial navigation, the torsional stiffness should be evaluated precisely. A computer-controlled instrument for stiffness measurement based on static measuring principle was introduced for variant section micro bars, The main hardware of the system includes a precision motorized rotary stage and a torsion sensor. The stepping resolution of angular displacement is 0.00250, the measurement accuracy of moment is 0.05mN•m. The measurement software was programmed on the LabVIEW platform for virtual instrument. The measuring experiments indicate the device can be used for automatic testing of stiffness of the torsion bars with high accuracy and efficiency.

APA, Harvard, Vancouver, ISO, and other styles

18

Madsen, J. C., H. J. Skov, and S. E. Rasmussen. "An Inexpensive Automation of a Powder Diffractometer." Powder Diffraction 3, no. 2 (June 1988): 91–92. http://dx.doi.org/10.1017/s0885715600013300.

Full text

Abstract:

AbstractA conventional Bragg-Brentano type diffractometer was equipped with a stepping motor, a timer, and a scaler, and an MC68000 Motorola microprocessor which controls the diffractometer functions. The microprocessor was programmed to operate the diffractometer in a step-scanning mode, to check a datum and to communicate with a process control computer, e.g. a PDP 11/44 or a Micro VaxII computer.

APA, Harvard, Vancouver, ISO, and other styles

19

Milecki, Andrzej, and Jarosław Ortmann. "Influences of Control Parameters on Reduction of Energy Losses in Electrohydraulic Valve with Stepping Motors." Energies 14, no. 19 (September 26, 2021): 6114. http://dx.doi.org/10.3390/en14196114.

Full text

Abstract:

In many heavy machines, the use of high force drives is required. For such tasks, electrohydraulic servo drives with proportional valves are used most often. In these valves, the proportional electromagnets are applied. If high precise control is additionally required, it is necessary to use expensive servo valves or precise stepping motors. In this paper, the application of a valve with one (or with two) stepping motors in the electrohydraulic servo drive is described. Such motors may work in a micro-step mode, which enables the precise positioning of the valve spool with low energy consumption. The control system structure that was used for positioning, consisting of such an electrohydraulic servo drive with a valve having stepping motors, is described. In the investigations, the following control parameters are considered: the number of stepping motors used, proportional gain coefficients, supply pressure, and desired step distance. The simulation model of the servo drive is proposed, enabling the investigations of energy consumption during the positioning process. In the investigations, the drive step responses are recorded and compared, taking into account the rise time and energy consumption. The overshot-free algorithm is used in the following step and tested in positioning tasks. The collected results of energy consumption of the drive during the positioning process are compared with other solutions.

APA, Harvard, Vancouver, ISO, and other styles

20

Clark, Bronwyn, Elisabeth Winker, Matthew Ahmadi, and Stewart Trost. "Comparison of Three Algorithms Using Thigh-Worn Accelerometers for Classifying Sitting, Standing, and Stepping in Free-Living Office Workers." Journal for the Measurement of Physical Behaviour 4, no. 1 (March 1, 2021): 89–95. http://dx.doi.org/10.1123/jmpb.2020-0019.

Full text

Abstract:

Accurate measurement of time spent sitting, standing, and stepping is important in studies seeking to evaluate interventions to reduce sedentary behavior. In this study, the authors evaluated the agreement in classification of these activities from three algorithms applied to thigh-worn ActiGraph accelerometers using predictions from the widely used activPAL device as a criterion. Participants (n = 29, 72% female, age 23–68 years) wore the activPAL3™ micro (processed by PAL software, version 7.2.32) and the ActiGraph™ GT9X accelerometer on the right front thigh concurrently for working hours on one full workday (7.2 ± 1.2 hr). ActiGraph output was classified via the three test algorithms: ActiGraph’s ActiLife software (inclinometer); an open source method; and, a machine-learning algorithm reported in the literature (Acti4). Performance at an instance level was evaluated by computing classification accuracy (F scores) for 15-s windows. The F scores showed high accuracy relative to the criterion for identifying sitting (96.7–97.1) and were 84.7–85.1 for identifying standing and 78.1–80.6 for identifying stepping. The four methods agreed strongly in total time spent sitting, standing, and stepping, with intraclass correlation coefficients of .96 (95% confidence interval [.92, .96]), .92 (95% confidence interval [.81, .96]), and .87 (95% confidence interval [.53, .95]) but sometimes overestimated sitting time and underestimated standing time relative to activPAL. These algorithms for identifying sitting, standing, and stepping from thigh-worn accelerometers provide estimates that are very similar to those obtained using the activPAL.

APA, Harvard, Vancouver, ISO, and other styles

21

Matsuo, Kenshi, Takeshi Miura, and Katsubumi Tajima. "Precise Position Control of a Stepping Motor in Micro-step Drive Using Pre-compensator." IEEJ Journal of Industry Applications 7, no. 4 (July 1, 2018): 369–70. http://dx.doi.org/10.1541/ieejjia.7.369.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

ISHII, K., S. MATSUYAMA, H. YAMAZAKI, Y. WATANABE, T. YAMAGUCHI, G. MOMOSE, T. AMAETAIVAN, A. SUZUKI, Y. KIKUCHI, and W. GALSTER. "MICRON-CT USING PIXE WITH MICRO-BEAMS." International Journal of PIXE 15, no. 03n04 (January 2005): 111–23. http://dx.doi.org/10.1142/s0129083505000416.

Full text

Abstract:

We developed a micron-CT consisting of micro-beam system and X-ray CCD camera (Hamamatsu photonics C8800X), whose element size is 8μ m ×8μ m and a total number of image elements 1000×1000 gives an image size of 8 mm ×8 mm . The sample is placed in a tube of a small diameter, which is rotated by a stepping motor. The transmission data through the sample are taken with characteristic Ti - K -X-rays (4.558 keV) produced by 3MeV proton and α particle micro-beams. After image reconstruction using an iteration method, 3D-images of small objects namely, hair and small ants were obtained with a spatial resolution of ~5μm. It is expected that our micron-CT can provide cross sectional images of in-vivo cellular samples with high resolution and can be applied to a wide range of research in biology and medicine.

APA, Harvard, Vancouver, ISO, and other styles

23

Tang, Y. J., Zhen Long Wang, Q. Hu, and W. S. Zhao. "Improved Micro-EDM Miniaturized Device Using Differential Reciprocating Driving Method." Key Engineering Materials 339 (May 2007): 355–59. http://dx.doi.org/10.4028/www.scientific.net/kem.339.355.

Full text

Abstract:

A miniaturized Electrical Discharge Machine (EDM) device based on ultrasonic motor has been developed to machine micro-holes in narrow space. In this mechanism, the electrode is driven without need of electrode holder, so that the mass and inertia of slider are greatly smaller, and feeding frequency of electrode can be raised compared to the conventional miniaturized EDM devices. This is a significant improvement that the electrode’s driving means varies from plane driving to line driving. Because of its advantage of compact size, the miniaturized EDM device can be fixed on robot. Differential Reciprocating Driving Method (DRDM) for EDM electrode is proposed. Feeding resolution of electrode reaches 0.5μm in stepping style, while resolution reaches 40nm in differential reciprocating style, and all above characteristics create preconditions for micro EDM machining. The holes with figures of Φ90μm inclined circle and inclined Y have been machined.

APA, Harvard, Vancouver, ISO, and other styles

24

Han, Liang, You Yang Li, and Qian Zhang. "A Conceptual Design of the Knee Rehabilitation Device." Applied Mechanics and Materials 215-216 (November 2012): 225–28. http://dx.doi.org/10.4028/www.scientific.net/amm.215-216.225.

Full text

Abstract:

This paper aims to design a knee rehabilitation device which can help the knee patients to perform movement in bending leg manner. And in that way the rehabilitation process will be improved greatly. The design of the device includes the mechanical main body design, driving motor, and control circuit which contains the keyboard setting, display unit and clock unit. Through the pulse width modulation (PWM) technology the stepping motor is driven and the automatic bent in leg is achieved. During the exercise the following information is known: the starting time, the lasting time, the angle of movement and the speed of movement. The micro controller unit (MCU) is responsible for the information processing from both the key and liquid crystal display (LCD). After the key inputs the given parameters the stepping motor can output the desired motions. Meanwhile, the LCD can display the input information. Now the project has accomplished the preliminary design, and the concrete scheme is shown in this paper.

APA, Harvard, Vancouver, ISO, and other styles

25

Lei, Jianguo, Xiaoyu Wu, Bo Wu, Bin Xu, Kai Jiang, Zhenlong Wang, and Shuangchen Ruan. "Experimental research on eliminating the stair-stepping effect of laminated 3D microelectrodes by micro-ECM." International Journal of Advanced Manufacturing Technology 98, no. 1-4 (June 16, 2018): 937–46. http://dx.doi.org/10.1007/s00170-018-2311-4.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

Song, Qing, Xue Fei Mao, Lu Yang, Gao Jie Meng, and Dan Qing Du. "Control Design of the Micro-Flow Liquid Feeding System in the Drop Analyzer." Applied Mechanics and Materials 457-458 (October 2013): 905–9. http://dx.doi.org/10.4028/www.scientific.net/amm.457-458.905.

Full text

Abstract:

In order to solve the problem of inconvenience for integration and operation complexity, the micro-flow fluid supply system based on STC12 series MCU is presented and implemented. STC12 has many advantages such as ultra-low power consumption, rich chip designs, high performance cost ratio, high speed, etc. The feeding system mainly consists of mechanical parts, a miniature stepper motor, a micro-stepping driver, MCU and its control circuit. The software program is written by PC to manage the feeding process of the start-stop, rotation direction, acceleration and deceleration of the motor. Both the flow rate and the flow flux can be controlled precisely and flexibly, so as to ensure that the test liquid is slowly delivered under quasi-equilibrium condition to shape into a satiated and uniform drop.

APA, Harvard, Vancouver, ISO, and other styles

27

Baronnet, A., J. P. Cuif, Y. Dauphin, B. Farre, and J. Nouet. "Crystallization of biogenic Ca-carbonate within organo-mineral micro-domains. Structure of the calcite prisms of the Pelecypod Pinctada margaritifera (Mollusca) at the submicron to nanometre ranges." Mineralogical Magazine 72, no. 2 (April 2008): 617–26. http://dx.doi.org/10.1180/minmag.2008.072.2.617.

Full text

Abstract:

AbstractAtomic force microscopy (AFM) and transmission electron microscopy (TEM) were used to investigate the fine structure of the calcite prisms from the pearl-oyster shell Pinctada margaritifera. The AFM analysis shows that the prisms are made of densely packed circular micro-domains (in the 0.1 μm range) surrounded by a dense cortex. The TEM images and diffraction patterns allow the internal structure of the micro-domains to be described. Each of them is enriched in Ca-carbonate. Hosted in distinct regions of each prism, some are fully amorphous, and some others fully crystallized as subunits of a large calcite single crystal. At the border separating the two regions, micro-domains display a crystallized core and an amorphous rim. Such a border probably marks out an arrested crystallization front having propagated through a previously bio-controlled architecture of the piling of amorphous micro-domains. Compared to recent data concerning the stepping mode of growth of the calcite prisms and the resulting layered organization at the μm-scale, these results give unexpected views regarding the modalities of biocrystallization.

APA, Harvard, Vancouver, ISO, and other styles

28

Zhao, F. M., Z. Liu, and F. R. Jones. "Photoelastic Determination of Interfacial Shear Stresses in Model Composites." Key Engineering Materials 334-335 (March 2007): 289–92. http://dx.doi.org/10.4028/www.scientific.net/kem.334-335.289.

Full text

Abstract:

Phase-stepping photoelasticity has been used to study the fragmentation of an E-glass fibre in epoxy resin and examine quantitatively the effect of a transverse matrix crack on the stress transfer at an interphase. Unsized glass fibre was coated by plasma polymerisation with a crosslinked conformal film of 90% acrylic acid and 10% 1,7-octadiene. The micro-mechanical response at the fibre-matrix interphase and in the adjacent matrix has been described in detail using contour maps of fringe order. From these, the interfacial shear stress profiles at fibre-break have been calculated.

APA, Harvard, Vancouver, ISO, and other styles

29

Zhao, Fangming, Simon A. Hayes, Eann A. Patterson, Robert J. Young, and Frank R. Jones. "Measurement of micro stress fields in epoxy matrix around a fibre using phase-stepping automated photoelasticity." Composites Science and Technology 63, no. 12 (September 2003): 1783–87. http://dx.doi.org/10.1016/s0266-3538(03)00131-3.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

Ma, Ji Jie, Jian Ming Wen, Ping Zeng, Jun Wu Kan, and Zhong Hua Zhang. "Dynamical Research on a Micro-Displacement Actuator Based on V-Type Guide-Way." Advanced Materials Research 305 (July 2011): 330–34. http://dx.doi.org/10.4028/www.scientific.net/amr.305.330.

Full text

Abstract:

A new type of the micro-displacement device based on V-shaped groove by using piezoelectric stack as the driver was presented. The performance characteristic of the driving device was introduced and its working mechanism was discussed. the dynamic formulation of inertial actuator is established, by using matlab software, the kinetic simulation of the actuator is carried out, the structure of newly inertial actuator is designed and manufactured. The simulation and experiment of the actuator is conducted. The simulation results agree well with the experimental results indicates that the simple associated symmetry electrical signal can provide stable stepping movement, the speed of 0.5mm/s, high resolution of 1μm, maximum loading capacity of 600g.

APA, Harvard, Vancouver, ISO, and other styles

31

Wu, Lai Jie, Xue Bin Li, Yuan Hong Yang, and Ya Feng Li. "Development of Intelligent Winch Rope-Aligning System." Applied Mechanics and Materials 446-447 (November 2013): 1211–16. http://dx.doi.org/10.4028/www.scientific.net/amm.446-447.1211.

Full text

Abstract:

This paper developed an intelligent control system based on micro-computer in order to rope wire in a winch. It introduces the constituent parts and work principle of the system, analyzes moving direction rules of the rope-aligning device, calculating method of step number and speed regulating algorithm of the stepping motor. The system can adapt rope-aligning speed and distance to the wire diameter and the roller rotating speed. With good characteristic such as regulating speed quickly and smoothly, following roller rapidly and controlling itself intelligently, the system can be widely used in hoisting and lifting field.

APA, Harvard, Vancouver, ISO, and other styles

32

Wu, Lai Jie, Jin Guo Jiang, Xue Bin Li, and Liang Huang. "An Intelligent Winch Rope-Aligning System." Applied Mechanics and Materials 455 (November 2013): 551–56. http://dx.doi.org/10.4028/www.scientific.net/amm.455.551.

Full text

Abstract:

This paper studys an intelligent control system based on micro-computer in order to rope wire in a winch. It introduces the constituent parts and work principle of the system, analyzes moving direction rules of the rope-aligning device, calculation method of step number and speed regulation algorithm of the stepping motor. The system can adapt rope-aligning speed and distance to the wire diameter and the roller rotating speed. With good characteristic such as regulating speed quickly and smoothly, following roller rapidly and controlling itself intelligently, the system will be widely used in the future.

APA, Harvard, Vancouver, ISO, and other styles

33

Wei, D. H., Y. J. Hsu, R. Klauser, I. H. Hong, G. C. Yin, and T. J. Chuang. "Photoelectron Microscopy Projects at SRRC." Surface Review and Letters 10, no. 04 (August 2003): 617–24. http://dx.doi.org/10.1142/s0218625x0300544x.

Full text

Abstract:

The combination of traditional surface-spectroscopic methods and microscopic imaging techniques is gaining popularity along with the advances of nanotechnology. Among the available techniques, scanning photoelectron microscopy (SPEM) and photoelectron emission microscopy (PEEM) are two methods recently developed at the Synchrotron Radiation Research Center (SRRC). The SPEM station uses a Fresnel zone-plate optics to focus the soft X-ray beam and form a microprobe. Photoelectrons emitted from the illuminated spot are used to perform micro-photoelectron spectroscopy (μ-PES) measurements or to image the sample. The PEEM station, on the other hand, collects secondary electrons emitted from the sample upon photon irradiation, and uses an all-electrostatic column to magnify the field of view defined by the objective lens. By stepping the photon energy, micro-X-ray absorption spectra (μ-XAS) can be extracted from a sequence of images after proper image processing.

APA, Harvard, Vancouver, ISO, and other styles

34

Lin, Jium Ming, and Cheng Hung Lin. "A Far Field Measurement System Design for Light Emitting Devices." Advanced Materials Research 765-767 (September 2013): 2144–47. http://dx.doi.org/10.4028/www.scientific.net/amr.765-767.2144.

Full text

Abstract:

The key point of the proposed LED (light emitting device) optical field measurement system is to place the packaged or unpackaged LED on a stepping motor without any translation parts. Thus the mechanical aging effect and the maintenance problems of the traditional rotary part are avoided. Besides, the measurement sensors are fixed along a quarter arc of a circle with the LED at the center, so they can take both spectrum and energy output measurements along various aspect angles. The system has thirteen photo detector modules forming a 90° arch with a diameter of 63.2cm. Each module comprises eight photo-detectors, and each detector covers 0.9°. A stepping motor, placed at the center of the circle, rotates a LED under test through 360°with a step size of 1.8°. A powerful micro-controller (C8051-F020) is employed to control the 3-dimensional far field measurement flow for the data acquisition that bridges the photo-detector array modules and a personal computer. The communication between the personal computer and the data acquisition sub-system is through a RS232 interface. A fast, reliable, user-friendly measurement system has been achieved.

APA, Harvard, Vancouver, ISO, and other styles

35

Büschges, Ansgar. "Connecting the micro with the macro level in motor control: unravelling general sensory influences on leg stepping." Journal of Physiology 597, no. 12 (May 15, 2019): 2971–72. http://dx.doi.org/10.1113/jp278031.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Rupal, Baltej Singh, Kamalakannan Ramadass, and Ahmed Jawad Qureshi. "Investigating the effect of motor micro-stepping on the geometric tolerances of Fused Filament Fabrication printed parts." Procedia CIRP 92 (2020): 9–14. http://dx.doi.org/10.1016/j.procir.2020.05.172.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

Yoneyama, Satoru, M. Mizuhara, H. Kikuta, and K. Moriwaki. "Instantaneous Spatial Phase-Stepping Methods for Phase-Measuring Interferometry and Photoelasticity." Key Engineering Materials 326-328 (December 2006): 39–42. http://dx.doi.org/10.4028/www.scientific.net/kem.326-328.39.

Full text

Abstract:

This paper demonstrates instantaneous phase-stepping and subsequent phase analysis methods for interferometry and two-dimensional photoelasticity. The camera that has a pixelated form-birefringent micro-retarder array acquires phase-stepped fringes in a single camera frame. Then, the distributions of Stokes parameters that represent the state of polarization are calculated from a single image. In the case of the polarization interferometer, the phase difference of the two orthogonally polarized light beam can be easily determined from the Stokes parameters. On the other hand, the phase distributions of the isochromatics and the isoclinics are obtained in the case of the photoelasticity. It is emphasized that this method is applicable to real-time inspection of optical elements as well as the study of the mechanics of time-dependent materials because multiple exposures are unnecessary for sufficient data acquisition in the completion of data analysis.

APA, Harvard, Vancouver, ISO, and other styles

38

Matsumura, Takashi, Yasuharu Hayase, Jerome Blanchet, Naoki Iioka, and Ryo Kato. "Surface Texturing in Micro Parametric Machining." International Journal of Automation Technology 10, no. 1 (January 4, 2016): 30–40. http://dx.doi.org/10.20965/ijat.2016.p0030.

Full text

Abstract:

Parametric machining is applied to fabricate micro-scale textures on surfaces by rotating the workpiece and tool. Periodic circular textures are controlled by only four parameters: the distance from the rotation center of the workpiece to that of the tool holder, the rotation radius of the tool in the tool holder, and the angular velocities of the workpiece and the tool holder. The textures to be machined are controlled by simulating the trajectory of the tool on the workpiece. A texturing machine was developed with two servomotors and three stepping motors, where the rotations of the servomotors were synchronized. Some examples are shown to verify the presented texturing in cutting tests. Because functional surfaces should be controlled by the surface structure, a model is presented to simulate the surface profiles of the textures. The orientation of the cutting tool with respect to the cutting direction is discussed in terms of the surface structure and the surface finish. The cutting load is estimated with the indentation and the shearing components in a simplified force model.

APA, Harvard, Vancouver, ISO, and other styles

39

Wünsche, Michael, Jan Sladek, Vladimir Sladek, Chuanzeng Zhang, and Miroslav Repka. "Dynamic Wave Propagation in Fiber Reinforced Piezoelectric Composites with Cracks." International Journal of Computational Methods 16, no. 06 (May 27, 2019): 1840021. http://dx.doi.org/10.1142/s0219876218400212.

Full text

Abstract:

This paper presents the transient dynamic analysis of micro-cracks of arbitrary shape in two-dimensional, linear piezoelectric fiber reinforced composite materials. Interface cracks between fiber and matrix as well as cracks inside the matrix and fibers are investigated. For this purpose, a symmetric Galerkin time-domain boundary element method in conjunction with a multi-domain technique is developed. The time-domain fundamental solutions for linear piezoelectric materials are applied. The time discretization is performed by a collocation method. An explicit time-stepping scheme is obtained to compute the discrete boundary data including the generalized crack-opening-displacements (CODs). Iterative solution algorithms are implemented to solve the nonlinear semi-permeable electrical crack-face boundary conditions and for a crack-face contact analysis at time-steps when a physically unacceptable crack-face intersection occurs. Several numerical examples are presented to reveal the influences of the micro-cracks, the material combinations and the transient dynamic loading on the intensity factors and the scattered wave fields.

APA, Harvard, Vancouver, ISO, and other styles

40

Martín, P., J. Jiménez, C. Frigeri, L. F. Sanz, and J. L. Weyher. "A study of the dislocations in Si-doped GaAs comparing diluted Sirtl light etching, electron-beam-induced current, and micro-Raman techniques." Journal of Materials Research 14, no. 5 (May 1999): 1732–43. http://dx.doi.org/10.1557/jmr.1999.0235.

Full text

Abstract:

Impurity atmospheres around dislocations have been studied in n-type Si-doped liquid encapsulated Czochralski (LEC) GaAs substrates by micro-Raman spectroscopy, diluted Sirtl-like etching with light (DSL) method, and electron-beam-induced current (EBIC). A complete morphological study of the recombinative atmospheres revealed by photoetching was achieved by phase stepping microscopy (PSM), which is an optical interferometry technique allowing to obtain the surface topography with a high vertical resolution (in the nanometer range). The minority carrier diffusion length was measured by EBIC at different points of the atmospheres. Structural distortion at the regions surrounding the dislocation core were observed by micro-Raman spectroscopy. The carrier depletion depth and the recombination of the photogenerated carriers were also studied by Raman spectroscopy, obtaining a good agreement with the EBIC data and the photoetching rates. Impurity gettering and diffusion and defect reactions involving As interstitials are assumed to play a major role in the formation of the recombinative atmospheres.

APA, Harvard, Vancouver, ISO, and other styles

41

Li, Dongjie, and Cong Liu. "Quality inspection method of micro-nano parts based on deep learning." Modern Physics Letters B 32, no. 30 (October 30, 2018): 1850363. http://dx.doi.org/10.1142/s0217984918503633.

Full text

Abstract:

There are some disadvantages such as low efficiency, high work intensity by using the manual methods to detect the quality of micro-nano parts because of the characteristics such as small size and fragile structure. Considering about the disadvantages, computer microscopic vision is introduced into the detection system in this paper, which can collects the image information of the parts into the computer system efficiently. The parts to be detected are transmitted by the spin material platform driven by the stepping motor. It is CNN based on deep learning that used to detect the surface quality and classify the defects of the parts according to the image information in this paper, which can improve the accuracy of the detection and reduce the work intensity of human compared with not only the traditional manual detection methods but also some edge detection methods that former researchers used.

APA, Harvard, Vancouver, ISO, and other styles

42

Yoneda, Makoto, and Hideo Dohmeki. "The Technique of Changing the Drive Method of Micro Step Drive and Sensorless Drive for Hybrid Stepping Motor." IEEJ Transactions on Industry Applications 128, no. 9 (2008): 1106–13. http://dx.doi.org/10.1541/ieejias.128.1106.

Full text

APA, Harvard, Vancouver, ISO, and other styles

43

Lin, Rongrong, and Leon Thomsen. "Validation of Digital Rock Physics Algorithms." Minerals 9, no. 11 (October 31, 2019): 669. http://dx.doi.org/10.3390/min9110669.

Full text

Abstract:

With a detailed microscopic image of a rock sample, one can determine the corresponding 3-D grain geometry, forming a basis to calculate the elastic properties numerically. The issues which arise in such a calculation include those associated with image resolution, the registration of the digital numerical grid with the digital image, and grain anisotropy. Further, there is a need to validate the numerical calculation via experiment or theory. Because of the geometrical complexity of the rock, the best theoretical test employs the Hashin–Shtrikman result that, for an aggregate of two isotropic components with equal shear moduli, the bulk modulus is uniquely determined, independent of the micro-geometry. Similarly, for an aggregate of two isotropic components with a certain combination of elastic moduli defined herein, the Hashin–Shtrikman formulae give a unique result for the shear modulus, independent of the micro-geometry. For a porous, saturated rock, the solid incompressibility may be calculated via an “unjacketed” test, independent of the micro-geometry. Any numerical algorithm proposed for digital rock physics computation should be validated by successfully confirming these theoretical predictions. Using these tests, we validate a previously published staggered-grid finite difference damped time-stepping algorithm to calculate the static properties of digital rock models.

APA, Harvard, Vancouver, ISO, and other styles

44

Mou, Shann Chyi, and Yu Ren Zhuang. "Stepping Experiment Analysis of a Biaxial Piezoelectric Actuated Stage." Advanced Materials Research 765-767 (September 2013): 62–66. http://dx.doi.org/10.4028/www.scientific.net/amr.765-767.62.

Full text

Abstract:

In this research, our research team used the self-designed piezoelectric actuator to achieve the micro/nanometer level precise positioning biaxial piezoelectric actuated stage through the redesign of stage mechanism. A novel piezoelectric actuator structure - 4-9-9-14 piezoelectric actuator is constructed, and it is made of piezoelectric buzzer to drive the stage. The movement of the piezoelectric actuated stage is read and analyzed by means of NI PCI-6115 data acquisition card and LabVIEW software operating in conjunction with a linear encoder. The new consideration of tuning time Tonis used to place of traditional method of changing the magnitude of driving voltage to control the stepping distance of the stage. Under a constant driving voltage, the displacement of the stage increases with time Ton, and the displacement of the stage decreases with time Ton. The aforesaid phenomenon occurs to leftward or rightward movement of the upper stage and forward or backward movement of the lower stage. Given a constant time Ton, the displacement of the stage in motion decreases with the driving voltage, and the displacement of the stage in motion increases with the driving voltage.

APA, Harvard, Vancouver, ISO, and other styles

45

Nwagoum Tuwa, Peguy Roussel, and P. Woafo. "Suppression of the noise-induced effects in an electrostatic micro-plate using an adaptive back-stepping sliding mode control." ISA Transactions 72 (January 2018): 100–109. http://dx.doi.org/10.1016/j.isatra.2017.10.003.

Full text

APA, Harvard, Vancouver, ISO, and other styles

46

De Jong, Nathan, Isaac Debache, Zhaoxing Pan, Mael Garnotel, Kate Lyden, Cédric Sueur, Chantal Simon, Daniel Bessesen, and Audrey Bergouignan. "Breaking up Sedentary Time in Overweight/Obese Adults on Work Days and Non-Work Days: Results from a Feasibility Study." International Journal of Environmental Research and Public Health 15, no. 11 (November 16, 2018): 2566. http://dx.doi.org/10.3390/ijerph15112566.

Full text

Abstract:

Office workers are vulnerable to the adverse health effects of sedentary behavior (i.e., sitting time). Increasing physical activity and preventing time spent sitting is an occupational health priority. This randomized crossover design study compared the short-term (3-days) effects of hourly interruptions of sedentary time with 5-min micrrobouts of activity for 9 hours (MICRO) to a sedentary control condition (SED) and a duration-matched continuous single bout of physical activity (45-min/d, ONE) condition on inclinometer-derived sitting-time on work and non-work days in sedentary overweight/obese adults. Differences in sitting/lying, standing, stepping, number of sit/stand transitions, time spent in moderate and vigorous activity (MVPA), energy expenditure, self-perceived vigor and fatigue, and insulin sensitivity were also examined. Twenty-two participants (10M/12F; 31.7 ± 1.3 year old BMI 30.4 ± 0.5 kg/m2) completed all conditions. No between-condition effects were observed in sitting-time and sit/stand transitions. Both interventions increased daily steps, MVPA and energy expenditure with increases being greater in ONE than MICRO. Feelings of vigor and fasting insulin sensitivity were also improved. Participants reported less fatigue with MICRO than SED and ONE. Both interventions increase physical activity and energy expenditure in occupational and leisure-time contexts. The sustainability of these effects over the long term and on health outcomes will need to be tested in future studies.

APA, Harvard, Vancouver, ISO, and other styles

47

Yang, An Jie, and Yu Xi Liu. "Design and Application of Motormeter Based on CAN Bus Technology." Applied Mechanics and Materials 331 (July 2013): 356–59. http://dx.doi.org/10.4028/www.scientific.net/amm.331.356.

Full text

Abstract:

This paper introduces CAN bus communication principle and different designing kinds of automobile hardware modules. The research and application of motormeter based on CAN bus technology has been put forward. It takes the micro-control unit (MCU) P87C591 as its core , the stepping motor and LCD as its hardware platform, so as to achieve the data received and send based on the CAN bus. The anti-jamming of this system is analyzed and designed because of the complexity working environment of the automotive. The information technology, control technology, as well as the CAN bus and vehicle safety monitoring technology are integrated in automobile instrument cluster. The system is designed to reflect real-time vehicle operating conditions by reading, processing and displaying the data from each sensor on the CAN bus.

APA, Harvard, Vancouver, ISO, and other styles

48

Mou, Shann Chyi, and Yu Ren Zhuang. "Stepping Experiment and Characteristics Analysis of a Novel Biaxial Piezoelectric Actuated Stage." Applied Mechanics and Materials 479-480 (December 2013): 697–701. http://dx.doi.org/10.4028/www.scientific.net/amm.479-480.697.

Full text

Abstract:

In this research, our research team used the self-designed piezoelectric actuator to achieve the micro/nanometer level precise positioning biaxial piezoelectric actuated stage through the redesign of stage mechanism. A novel piezoelectric actuator structure - 4-9-9-14 piezoelectric actuator is constructed, and it is made of piezoelectric buzzer to drive the stage. The movement of the piezoelectric actuated stage is read and analyzed by means of NI PCI-6115 data acquisition card and LabVIEW software operating in conjunction with a linear encoder. The new consideration of tuning time Tonis used to place of traditional method of changing the magnitude of driving voltage to control the stepping distance of the stage. Under a constant driving voltage, the displacement of the stage increases with time Ton, and the displacement of the stage decreases with time Ton. The aforesaid phenomenon occurs to leftward or rightward movement of the upper stage and forward or backward movement of the lower stage. Given a constant time Ton, the displacement of the stage in motion decreases with the driving voltage, and the displacement of the stage in motion increases with the driving voltage.

APA, Harvard, Vancouver, ISO, and other styles

49

Isojima, Hiroshi, Ryota Iino, Hiroyuki Noji, and Michio Tomishige. "Direct Observation of the Forward Stepping Motion of Kinesin-1 using Dark-Field Microscopy with 50-Micro Second Temporal Resolution." Biophysical Journal 104, no. 2 (January 2013): 324a—325a. http://dx.doi.org/10.1016/j.bpj.2012.11.1802.

Full text

APA, Harvard, Vancouver, ISO, and other styles

50

Zhang, Si Feng, Yan Mei Li, Xiu Guang Song, Jian Zhou, and Jian Cui. "Micro-Numerical Simulation of Anchorage Performance for Geotechnical Anchored Structure by Particle Flow Code." Advanced Materials Research 243-249 (May 2011): 3157–66. http://dx.doi.org/10.4028/www.scientific.net/amr.243-249.3157.

Full text

Abstract:

Based on the theory of particle flow code, the micro-numerical analysis model is established to study the anchorage performance of geotechnical prestressed anchorage structures. According to the numerical model tests, the development regularity of stress and displacement of surrounding soil around bar body under the effect of uplift loading is analyzed, and the interaction characters between anchor bolt and surrounding soil are also deeply studied. Conclusions can be drawn as follows: with the function of tensile load, two area of stress concentration form within the interior bond section of prestressed anchorage structure, and the soil porosity also changes accordingly. The interface shear stress peak point shift inward gradually with the increase of time-stepping, furthmore, the peak stress also enlarges gradually. According to the deformation mode, the surrounding soil can be divided into three zones. The radial displacement of soil between anchors is weakened because of the effects of group anchors, but the axial displacement is strengthened, which nominally is similar to the “single anchor character”. The research findings have a certain reference value for the study of anchorage mechanism.

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!