Numerical calculation and experimental study on the image rotation angle of image converter tube using magnetic focusing

2017 ◽  
Vol 34 (3) ◽  
pp. 278
Author(s):  
Jiayu Chen ◽  
Jinghua Long ◽  
Houzhi Cai ◽  
Yubo Liao ◽  
Quanliang Guo ◽  
...  
Keyword(s):  
Experimental Study ◽  
Numerical Calculation ◽  
Rotation Angle ◽  
Image Converter ◽  
Image Rotation ◽  
Magnetic Focusing

Experimental Study Noise of HMR2003 Sensor with or without the Use of Amplifier AMP04

2014 ◽  
Vol 605 ◽  
pp. 629-632 ◽  
Author(s):  
N. Hadjigeorgiou
Keyword(s):  
Magnetic Field ◽  
Experimental Study ◽  
Angular Velocity ◽  
Rotation Angle ◽  
Magnetic Sensors ◽  
Successful Attempt ◽  
Wear Measurement ◽  
The Magnetic Field

Magnetic sensors offer many essential benefits: they enable contactless and thus without wear measurement of mechanical amounts of such as the rotation angle and angular velocity. And are a powerful and economical solution. In this work became a successful attempt to detect and record the noise of a Anisotropic Magnetoresistors (AMR) sensor, hte HMC2003, which manufactured by Honeywell Inc. was tested for its ability to detect the magnetic field and as well as how the corruption, which are involved due to the noise.

Experimental study of spatial resolution of a semiconductor–gas discharge infrared image converter

2005 ◽  
Vol 81 (7) ◽  
pp. 1009-1014 ◽  
Author(s):  
L.M. Portsel ◽  
V.M. Marchenko ◽  
S. Matern ◽  
H.-G. Purwins
Keyword(s):  
Experimental Study ◽  
Spatial Resolution ◽  
Infrared Image ◽  
Gas Discharge ◽  
Image Converter

Experimental Study on the Second-Order Buoyancy of Magnetic Fluid

2012 ◽  
Vol 512-515 ◽  
pp. 1464-1469 ◽  
Author(s):  
Xin Zhi He ◽  
De Cai Li ◽  
Wen Ming Yang ◽  
Hai Na Zhang
Keyword(s):  
Magnetic Field ◽  
Experimental Study ◽  
Numerical Calculation ◽  
Permanent Magnet ◽  
Saturation Magnetization ◽  
Experimental Method ◽  
Magnetic Fluid ◽  
Second Order

The buoyancy principle of magnetic fluid is one of the most attractive effects of magnetic fluid statics. But it is too difficult to calculate the buoyancy directly due to the complexity of magnetic field. Moreover, numerical calculation employs too many assumptions. So in this paper the experimental method is adopted to measure the second-order buoyancy received by permanent magnet immersed in magnetic fluid, which depends on the distance between the magnet and the wall of vessel. The influence of the diameter of cylindrical vessels, the size of magnets and the saturation magnetization of magnetic fluid on the buoyancy is also analyzed qualitatively.

scholarly journals Numerical calculation and experimental study on the small-size streak tube

2018 ◽  
Vol 67 (18) ◽  
pp. 188501
Author(s):  
Tian Li-Ping ◽  
Li Li-Li ◽  
Wen Wen-Long ◽  
Wang Xing ◽  
Chen Ping ◽  
...  
Keyword(s):  
Experimental Study ◽  
Numerical Calculation ◽  
Streak Tube

Field Experiment of Blade Surface Pressure of a HAWT

2013 ◽  
Vol 291-294 ◽  
pp. 445-449
Author(s):  
De Shun Li ◽  
Ren Nian Li
Keyword(s):  
Experimental Study ◽  
Numerical Calculation ◽  
Wind Tunnel ◽  
Field Experiment ◽  
Wind Turbine ◽  
Surface Pressure ◽  
Pressure Sensors ◽  
Horizontal Axis ◽  
Blade Surface ◽  
Horizontal Axis Wind Turbine

Field experimental study is performed on a 33 kW horizontal axis wind turbine with rotor diameter of 14.8 m. The distribution of pressure is gathered by disposed 191 taped pressure sensors span-ward on seven particular sections of a blade. The results will provide a comparative basis to wind tunnel experiment and numerical calculation of the flow of the wind turbine.

The Experimental Study and Theoretical Analysis About the Ice-Wave Interaction

2003 ◽  
Author(s):  
Heqing Du
Keyword(s):  
Boundary Layer ◽  
Experimental Study ◽  
Numerical Calculation ◽  
Quantitative Analysis ◽  
Theoretical Analysis ◽  
Wave Attenuation ◽  
Ice Sheet ◽  
Wave Interaction ◽  
Ice Floes ◽  
The Waves

Experiments were performed to examine ice-wave interaction that the waves attenuate under continuation ice sheet and at ice floes. The analysis of ice-wave interaction and numerical calculation of the wave attenuation in floe zone are still important problems. It was understood that the reasons of the attenuation are creep, viscous, reflection and collision, and the viscosity has been calculated by using hydrodynamics method in the water boundary layer. Proportion of the every reason and the quantitative analysis has been done.

Development of a New TEM With an Image Rotation System

1985 ◽  
Vol 43 ◽  
pp. 140-141
Author(s):  
S. Isakozawa ◽  
H. Kobayashi ◽  
T. Ohashi ◽  
M. Tomita ◽  
S. Kamimura
Keyword(s):  
High Voltage ◽  
Rotation Angle ◽  
Low Voltage ◽  
Focal Length ◽  
Electron Gun ◽  
Vacuum System ◽  
Lens System ◽  
Image Rotation ◽  
Rotation System ◽  
Voltage Electron

We have developed a new 125KV TEM (Fig. 1). It incorporates an electron gun operable up to 125KV, 3-stage illumination lens system, and 5-stage imaging lens system. Microprocessors are used to control the high voltage, electron optics and vacuum system.In the high voltage system, accelerating voltage is variable from 10KV to 125KV with increments of 100V/step. In the low voltage operation at 10KV and 25KV,the anode to wehnelt distance is automatically controlled for optimum gun brightness. Filament and bias voltage supplies are also precisely regulated to give stable emission currents at all accelerating voltages.Imaging lens system is free of image rotation during magnification change from 100x to 500,000x. In addition, a new image rotation system is built in. This image rotation system utilizes the individual lens data such as rotation angle, focal length, etc. When a required image rotation angle is given, the computer determines excitation condition of each lens for a selected magnification.

Local Upsampling Fourier Transform for High Accuracy Image Rotation Estimation

2011 ◽  
Vol 268-270 ◽  
pp. 1488-1493 ◽  
Author(s):  
Cai Ling Wang ◽  
Chun Xia Zhao ◽  
Jing Yu Yang
Keyword(s):  
Fourier Transform ◽  
Frequency Domain ◽  
Rotation Angle ◽  
Estimation Algorithm ◽  
High Accuracy ◽  
Angle Estimation ◽  
Image Rotation ◽  
Local Neighborhood ◽  
Robust To Noise ◽  
Rotation Estimation

A high accuracy rotation angle estimation algorithm based on Local Upsampling Fourier Transform (LUFT) is developed in this paper. The LUFT uses a hierarchical strategy to estimate the rotation, which consists of a transformation of rotation to translation, a fast coarse rotation estimation and a robust refinement stage as well. The coarse rotation is estimated through the conventional Phase Only Correlation (POC), then, it is refined by the resampling technique within a local neighborhood in frequency domain. Furthermore, as will be shown in many experiments, the LUFT can achieve high accuracy rotation estimation, where the accuracy is tunable to some extent. Specially, it is efficient and robust to noise.

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