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长春光学精密机械与物... [2]
自动化研究所 [1]
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OAI收割 [3]
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Gait Pattern Identification and Phase Estimation in Continuous Multilocomotion Mode Based on Inertial Measurement Units
期刊论文
OAI收割
IEEE SENSORS JOURNAL, 2022, 卷号: 22, 期号: 17, 页码: 16952-16962
作者:
Zhang, Xingxuan
;
Zhang, Haojian
;
Hu, Jianhua
;
Zheng, Jun
;
Wang, Xinbo
  |  
收藏
  |  
浏览/下载:43/0
  |  
提交时间:2022/11/14
Gait pattern identification
phase estimate
adaptive oscillators
gait event detector
wearable robots
Capability of the extended state observer for minimum phase plants with unknown orders and uncertain relative degrees (EI CONFERENCE)
会议论文
OAI收割
31st Chinese Control Conference, CCC 2012, July 25, 2012 - July 27, 2012, Hefei, China
Zhao C.
;
Yang X.
;
Xiong J.
;
Lin X.
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  |  
浏览/下载:16/0
  |  
提交时间:2013/03/25
The observing capability of the active disturbance rejection control (ADRC) for the minimum phase plants with unknown orders and uncertain relative degrees is discussed in this paper. The frequency performance of the linear extended state observer (LESO) is analyzed. It is proved that ESO can estimate the required states at the designed speed in spite of a large range of uncertainties. Finally
the results are verified by simulations. 2012 Chinese Assoc of Automati.
Phase error estimation with broadband white light by Phase Diversity (EI CONFERENCE)
会议论文
OAI收割
6th International Symposium on Precision Engineering Measurements and Instrumentation, August 8, 2010 - August 11, 2010, Hangzhou, China
作者:
Wang Z.
;
Wang B.
;
Zhang X.
;
Zhang X.
;
Zhang X.
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浏览/下载:24/0
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提交时间:2013/03/25
The technique of Phase Diversity (PD) is widely adopted to measure the wavefront error caused by atmosphere turbulence and system error. PD solves the Zernike coefficients of the wavefront by utilizing two images obtained with different defocus value. In this paper
we propose a method to restore the image and estimate the wavefront error of an imaging system. And we use present white noises to verify the robustness of the algorithm. We design an experiment system and implement it in our laboratory. The proposed algorithm is validated by computer simulations and experimental results. To use a broadband white object in experimental system a reasonable simplification for the system model is done. Our results show that the robustness against Gaussian white noises of the method is better then the case when the variance value is 0.03. The proposed method can be used as a wavefront sensor and restore the degradative images by photoelectric image system. 2010 SPIE.