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西安交通大学 [2]
长春光学精密机械与物... [2]
清华大学 [1]
北京航空航天大学 [1]
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会议论文 [2]
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The Design and Analysis of a Novel Micro Force Sensor Based on Depletion Type Movable Gate Field Effect Transistor
期刊论文
JOURNAL OF MICROELECTROMECHANICAL SYSTEMS, 2019, 卷号: 28, 页码: 298-310
作者:
Gao, Wendi
;
Jia, Chen
;
Jiang, Zhuangde
;
Zhou, Xiangyang
;
Zhao, Libo
收藏
  |  
浏览/下载:8/0
  |  
提交时间:2019/11/19
Ultra-low force sensor
movable gate
depletion type
high measuring sensitivity
field effect transistor
The Design and Analysis of a Novel Micro Force Sensor Based on Depletion Type Movable Gate Field Effect Transistor
期刊论文
JOURNAL OF MICROELECTROMECHANICAL SYSTEMS, 2019, 卷号: 28, 页码: 298-310
作者:
Gao, Wendi
;
Jia, Chen
;
Jiang, Zhuangde
;
Zhou, Xiangyang
;
Zhao, Libo
收藏
  |  
浏览/下载:19/0
  |  
提交时间:2019/12/30
Ultra-low force sensor
high measuring sensitivity
movable gate
depletion type
field effect transistor
Error analysis on the roll angle measurement of machine tool's guideway
期刊论文
Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University, 2016, 卷号: 50, 期号: [db:dc_citation_issue], 页码: 31-35
作者:
Qi, Jingya
;
Wang, Zhao
;
Huang, Junhui
;
Yu, Bao
;
Gao, Jianmin
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  |  
浏览/下载:11/0
  |  
提交时间:2019/12/02
Action mechanisms
High reflectivity mirrors
Incident angles
Jones matrix method
Measuring sensitivity
New mathematical model
Roll angle
Sensitivity enhancements
The Research of real time auto-recognition of the moire fringe (EI CONFERENCE)
会议论文
International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Imaging Detectors and Applications, May 24, 2011 - May 26, 2011, Beijing, China
Wang M.-J.
;
Wu Z.-G.
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  |  
浏览/下载:17/0
  |  
提交时间:2013/03/25
Measuring the movement of raster by the method of moire fringe has the advantage of high sensitivity
high resolution and non-contacted measurement. The characteristic of moire fringe is that the image is white alternate with black
the angle of the stripes is uniform
the width of the stripes is uniform
the terminators of the stripes aren't clear. A fast method that can figure out the width and angle of the moire fringe precisely is put forward in this paper. It calculates the angle the stripes firstly. According to the principle of the minimum mean squared error (MMSE)
the closer a series of data is
the smaller the value of the MMSE will be. The method is described as follows: It takes the image's center as the origin
180 beelines pass through the origin with the same angle interval. it calculates the value of the minimum mean squared error of the 180 beelines and find out the least one among those
then the angle of the moire fringe comes out primarily. In order to improving the calculating precision of moire fringe
60 equal angles are divided in the neighborhood of the angle
then a precise angle of moire fringe is calculated according to the principle of the MMSE. After getting out the angle of the moire fringe
we begin to calculate the width of moire fringe. A line vertical with the moire fringe is drawn
and we can get the width of the moire fringe by the vertical line. In order to get over the influence of the noise
an effective area with the shape of diamond is selected in the image. The data of area is accumulated and projected according to the direction of moire fringe
and a sine curve come out. The width of moire fringe can be obtained by getting the position of the first wave crest
the position of the last wave crest and the number of wave crest. Experiments prove that the precision of the method put forward in this paper is enhanced in comparison with the traditional frequency method
the precision of width calculation achieves to 99.6% according to the evaluation indicators of width detection error. The computing speed is boosted largely compared with traditional method
and it can achieve with 15 ms
that satisfying the demand of real time. 2011 SPIE.
Preparation of NiO-ZnO ceramic thermistor and its properties
期刊论文
2010, 2010
Lin Yuanhua
;
Wang Yu
;
He Jinliang
;
Nan Cewen
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  |  
浏览/下载:3/0
Measuring instrument for radial composite deviations of high-precision master gear (EI CONFERENCE)
会议论文
6th International Symposium on Precision Engineering Measurements and Instrumentation, August 8, 2010 - August 11, 2010, Hangzhou, China
Ma Y.
;
Wang T.
;
Lou Z.
;
Wang L.
;
Zhang Y.
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  |  
浏览/下载:31/0
  |  
提交时间:2013/03/25
During double flank rolling composite detection
the radial composite deviations of master gears has been existed and transferred to the measured gear by the primary harmonic curve. In order to improve measurement accuracy
a measuring instrument is developed for radial composite deviations of high-precision master gear in the paper. This instrument uses the structure of spring-suspend swing span to overcome the shortcomings of large rotation errors
low sensitivity
low resolution and large measuring force appearing in the traditional combination-type gear inspection instrument. Artificial intelligence technology is used to improve the efficiency and accuracy of this instrument. The result is that the measuring apparatus is able to meet the requirement and improve efficiency through the measuring experiments on master gears of precision grade 2 with modulus 2 mm and 3 mm
respectively. 2010 SPIE.
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