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北斗PPP高精度时间比对技术研究 期刊论文
时间频率学报, 2020, 卷号: 43, 期号: 4, 页码: 262
作者:  张继海;  董绍武;  袁海波;  广伟;  宋会杰
收藏  |  浏览/下载：11/0  |  提交时间：2021/11/29
Analysis of ocean tide loading displacements by GPS kinematic precise point positioning: a case study at the China coastal site SHAO 期刊论文
SURVEY REVIEW, 2019, 卷号: 51, 期号: 365, 页码: 172-182
作者:  Zhao, H.;  Zhang, Q.;  Tu, R.;  Liu, Z.
收藏  |  浏览/下载：17/0  |  提交时间：2021/11/29
Preliminary Evaluation on the Precision of the BDS-3 Global Ionospheric Model 其他
2019-01-01
作者:  Yu, Shun;  Ma, Fujian;  Wang, Wei;  Wu, Renpan;  Zeng, Qi
收藏  |  浏览/下载：5/0  |  提交时间：2019/12/05
Detection and Correction of Cycle Slip in Triple-Frequency GNSS Positioning 期刊论文
IEEE ACCESS, 2017
Gu, Xiaoying; Zhu, Bocheng
收藏  |  浏览/下载：6/0  |  提交时间：2017/12/03
A NEW ROBUST KALMAN FILTERING ALGORITHM OF UNEQUAL PRECISION OBSERVATIONS BASED ON RESIDUAL VECTORS IN STATIC PRECISE POINT POSITIONING 期刊论文
ACTA GEODYNAMICA ET GEOMATERIALIA, 2016, 卷号: 13, 期号: 4
作者:  Yao, Yi-fei;  Gao, Jing-xiang;  Li, Zeng-ke;  Xu, Chang-hui;  Cao, Xin-yun
收藏  |  浏览/下载：3/0  |  提交时间：2019/12/05
LABTM control system based on FPGA (EI CONFERENCE) 会议论文
2nd International Conference on Mechatronics and Applied Mechanics, ICMAM 2012, December 8, 2012 - December 9, 2012, Taiwan
Li X. F.; Wang X. P.; Qi X. D.; Wang Y.; Yu P.
收藏  |  浏览/下载：141/0  |  提交时间：2013/03/25
This paper presents the digital PI control method for design and simulation of a high precision limited angle brushless torque motor control system in Field Programmable Gate Array device (FPGA). The direct drive structures which are widely applied in many servo control fields. Matlab Xilinx System GeneratorR toolbox based on Fixed-Point Arithmetic is used to design the digital PI controller using DSP architecture  plot the responses of the control system and generate the VHDL source code. The control system model consists of a digital PI  a real LABTM  and a real absolute Inductosyn  encoder to rpm and position blocks. Through loading generated codes in process of the simulation that built by the digital discrete model  it is verified that the rising time of current loop is only 1.2ms  and rate loop is 8ms  overshoot is rarely 4.2%. Finally  the comprehensive positioning accuracy of system can reach up to 5 arc sec  and the rate jitter achieves 5% with the 4 arc sec accuracy absolute Inductosyn. (2013) Trans Tech Publications  Switzerland.  
Control Analysis of Point-to-point Positioning Based on Macro-micro Stage 会议论文
作者:  Fang, Jiwen;  Long, Zhili;  Zhang, Lufan;  Cai, Jiandong;  Nian, Longsheng
收藏  |  浏览/下载：3/0  |  提交时间：2019/12/03
Research of a novel dual-driven 2-DOF planar parallel robot 期刊论文
2010, 2010
Chu Zhong-yi; Cui Jing; Sun Li-ning; Qu Dong-sheng
收藏  |  浏览/下载：2/0
3R intersection target positioning in real time based on distance (EI CONFERENCE) 会议论文
2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China
Nengwei W.; Juan C.; Jian C.
收藏  |  浏览/下载：10/0  |  提交时间：2013/03/25
The positioning error based on angle  angle-distance or single station positioning increases with the distance increasing. 3R target positioning based on distance can obtain the high precision measurements in long distance. Here we give the 3R model for the intersection positioning  provide the two necessary conditions for getting the optimum intersection point. The experimental results show that the intersection precision based on angle is over 2m and will degrade greatly with the increasing of distance while the one based on 3R model will improve and the error decrease gradually. That the precision of the distance measurement is about 1m means the 3R model is better than the angle positioning  which can compensate the drawbacks of the angle positioning at short distance. 2010 IEEE.  

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