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Chinese Academy of Sciences Institutional Repositories Grid
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长春光学精密机械与物... [2]
国家天文台 [1]
自动化研究所 [1]
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High Precision Calibration for Three-Dimensional Vision-Guided Robot System
期刊论文
OAI收割
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, 2023, 卷号: 70, 期号: 1, 页码: 624-634
作者:
Liu, Zhicheng
;
Liu, Xilong
;
Cao, Zhiqiang
;
Gong, Xurong
;
Tan, Min
|
收藏
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浏览/下载:52/0
|
提交时间:2022/11/14
Robots
Calibration
Robot kinematics
Mathematical models
End effectors
Cameras
Robot vision systems
Calibration
error correction matrix
unified model
vision-guided robot
Applications of differential barometric altimeter in ground cellular communication positioning network
期刊论文
OAI收割
IET SCIENCE MEASUREMENT & TECHNOLOGY, 2020, 卷号: 14, 期号: 3, 页码: 322-331
作者:
Hu, Zhengqun
;
Zhang, Lirong
;
Ji, Yuanfa
|
收藏
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浏览/下载:26/0
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提交时间:2021/12/06
cellular radio
height measurement
measurement errors
Global Positioning System
altimeters
barometers
least squares approximations
Kalman filters
surface fitting
spread spectrum communication
compensation
matrix algebra
GPS
signal message structure
power spectrum
spread spectrum ranging signal
fitting parameters
least-square solution
calibration compensation
system noise variance matrix
measurement noise variance matrix
multibase station correction
height information correction calculation
DBA system
systematic performance
differential barometric altimeter
ground cellular communication positioning network
measurement datum distribution
altitude positioning error
Global Positioning System
differential barometric altimetry system
systematic implementation level
continuous altitude measurement
precise altitude measurement
DBA systematic implementation aspect
two dimensional curved surface fitting function
sensor measurement correction
filtering effect
Kalman filter
measuring station
multiBSs
navigation fusion
Research of active supporting technology based on 400mm thin mirror (EI CONFERENCE)
会议论文
OAI收割
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, April 26, 2010 - April 29, 2010, Dalian, China
作者:
Liu X.-Y.
;
Wang J.-L.
;
Wang J.-L.
;
Liu X.-Y.
收藏
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浏览/下载:31/0
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提交时间:2013/03/25
Using a spherical mirror of 400mm diameter and 12mm thickness
active supporting technology of thin mirror is researched. The axial support of the mirror is composed of 12 active supports and 3 fixed supports. The force actuator
which is composed of displacement actuator and force sensor
is installed in the active support. The mirror surface is tested by Zygo interferometer. For calibration
each actuator exerts unit force alone
and the surface variation is tested and taken as the response function of the actuator. The response functions of all actuators compose the stiffness matrix. Then the stiffness matrix is used by damped least square method to determine the correction force of each active support. In order to analyze the correction capability of the active supports
14 Zernike modes of the mirror surface are generated and tested respectively
and 7 modes are selected for correction. Initially
the RMS error of mirror surface is 1.16 I( =0.6328nm)when all actuators exert the same force. After 5 iterations
the RMS error of mirror surface is reduced to 0.13
close to the original surface quality. 2010 Copyright SPIE - The International Society for Optical Engineering.
A design of high-speed and low-consume parallel grouping RS code and simulation (EI CONFERENCE)
会议论文
OAI收割
2010 3rd International Conference on Advanced Computer Theory and Engineering, ICACTE 2010, August 20, 2010 - August 22, 2010, Chengdu, China
Chen C.
;
Jin G.
收藏
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浏览/下载:25/0
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提交时间:2013/03/25
RS code is a linear error correction codes with better error correction capability
is widely used in different kinds of occasions for communications or data storage. But for its high difficulty of coding and decoding algorithm and low throughput
optimization RS algorithm is always studied as one of the focus in the error-correction field. A new coding method
parallel coding and decoding data into groups in lower step finite field for avoiding complex matrix iteration and Chien search computation
is proposed in this paper. It is proved that the coding and decoding throughput of the parallel grouping RS coder is increased and the hardware complexity is reduced with changeless error-correction capability from the simulation results using ModelSim SE 6.0 and synthetic results using ISE 9.11. 2010 IEEE.
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