中国科学院机构知识库网格系统: 检索

Real-Time Iterative Compensation Framework for Precision Mechatronic Motion Control Systems 期刊论文 OAI收割
IEEE/CAA Journal of Automatica Sinica, 2022, 卷号: 9, 期号: 7, 页码: 1218-1232
作者: Chuxiong Hu; Ran Zhou; Ze Wang

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收藏 | 浏览/下载：26/0 | 提交时间：2022/06/27

Precision motion control prediction model real-time iterative compensation trajectory tracking

A real-time tracking controller for piezoelectric actuators based on reinforcement learning and inverse compensation 期刊论文 OAI收割
SUSTAINABLE CITIES AND SOCIETY, 2021, 卷号: 69, 页码: 9
作者: Qin, Shijie; Cheng, Long

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收藏 | 浏览/下载：37/0 | 提交时间：2021/11/03

Piezoelectric actuators Real-time tracking control Reinforcement learning Adaptive dynamic programming Hysteresis compensation

Real-time temperature estimation method for electromagnetic performance improvement of a large axisymmetric radio telescope under solar radiation 期刊论文 OAI收割
Iet Microwaves Antennas & Propagation, 2020, 卷号: 14, 期号: 13, 页码: 1635-1642
作者: Lian, Peiyuan; Wang, Congsi; Xu, Qian; Xiang, Binbin; Shi, Yu

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收藏 | 浏览/下载：44/0 | 提交时间：2021/06/25

radiotelescopes temperature sensors reflector antennas solar radiation temperature database table look-up method temperature field estimation speed real-time estimated temperature field temperature sensors real-time compensation axisymmetric telescopes time temperature estimation method electromagnetic performance improvement axisymmetric radio telescope solar radiation electromagnetic performances EM performance improvements temperature simulation fast estimation method transient temperature field simulation high-frequency radio telescopes large-aperture radio telescopes reflector antenna reflector antennas surface error adjustment pattern field Engineering Telecommunications

Analysis of the Subdivision Errors of Photoelectric Angle Encoders and Improvement of the Tracking Precision of a Telescope Control System 期刊论文 OAI收割
SENSORS, 2018, 卷号: 18, 期号: 9, 页码: 2998
作者: Yu, Jiawei; Wang, Qiang; Zhou, Guozhong; He, Dong; Xia, Yunxia

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收藏 | 浏览/下载：60/0 | 提交时间：2019/08/23

telescope control systems photoelectric angle encoders tracking precision subdivision errors amplitude error real-time compensation

An improved, real-time method for removing the cyclic error of a homodyne interferometer 会议论文 OAI收割
international symposium on photoelectronic detection and imaging 2012: laser sensing and imaging; and biological and medical applications of photonics sensing and imaging, beijing, china, may 24, 2011 - may 26, 2017
ZhaoSuwen; WenDesheng; ZhuShaolan; LiangShitong

收藏 | 浏览/下载：33/0 | 提交时间：2012/07/09

single frequency laser interferometer error correction real-time compensation Lissajous figure

Panoramic aerial camera image motion measurement using a hybrid system (EI CONFERENCE) 会议论文 OAI收割
2010 3rd IEEE International Conference on Computer Science and Information Technology, ICCSIT 2010, July 9, 2010 - July 11, 2010, Chengdu, China
作者: Jia P.

收藏 | 浏览/下载：28/0 | 提交时间：2013/03/25

Image motion compensation is significantly important for aerial camera photograph. To execute the compensation we must determine the image motion exactly. This paper proposes a method of real-time image motion measurement for panoramic aerial cameras based on image processing using a hybrid system. Two cameras are simultaneously used in the hybrid system. One main linear CCD for imaging while the other auxiliary low resolution high frame rate area CCD for determining the image motion based on 2D spatial correlation. The demanding computational requirements for the real-time 2D spatial correlation are covered by a joint transform optical correlator. Simulation test results show that the accuracy is improved and the measurement error is within 0.2 pixels for input images with SNR=1 dB. 2010 IEEE.

Dynamic closed-loop test for real-time drift angle adjustment of space camera on the Earth (EI CONFERENCE) 会议论文 OAI收割
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, April 26, 2010 - April 29, 2010, Dalian, China
作者: Xu S.; Wang D.

收藏 | 浏览/下载：36/0 | 提交时间：2013/03/25

In order to eliminate the influence of aircraft attitude angle to the image quality of space camera and assure that the drift angle of space camera could be accurately adjusted at the orbit a novel closed-loop test method is provided for real-time drift angle adjustment of space camera on the Earth. A long focal length dynamic aim generator is applied to simulate the image motion and the variety drift angle and to detect the precision of the image motion compensation machinery and the capability of the drift angle control system. The computer system is used to control the dynamic aim generator accomplish the data processing transmit and receive the data information. The seamless connection and the data transmission between the aim generator and the aircraft simulation devices are constituted. The command parameter and drift angle data transmitted by the simulation devices are received by the space camera at the real time then the photos are taken and the draft angle is adjusted simultaneously. It is shown that the drift angle can be accurately tracked by the space camera at the real time and the detective method satisfies the test requirement. 2010 Copyright SPIE - The International Society for Optical Engineering.

The research on distortion measurement and compensation technology in photoelectricity measurement system (EI CONFERENCE) 会议论文 OAI收割
2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China
Hong F.; Mujun X.; Zhiqian W.

收藏 | 浏览/下载：22/0 | 提交时间：2013/03/25

The distortion made by optical lens largely affect the measurement accuracy of the large field of view photoelectricity measurement system according to the theory of aberration in the photoelectricity system this paper design a series of distortion measurement devices in connection with the process of distortion correction in photoelectricity system establish the related mathmatics model make the real time distortion correction by the method of software compensation. The experimental results demonstrate the method decrease the measurement error made by the photoelectricity system distortion after the compensation in tatal field of view the systematic measurement error is less than 0.5 picture element. 2010 IEEE.

Study on bandwidth mutual-benefit between the azimuth and pitch in an optoelectronic tracking system (EI CONFERENCE) 会议论文 OAI收割
MEMS/MOEMS Technologies and Applications III, November 12, 2007 - November 14, 2007, Beijing, China
作者: Guo J.; Guo J.; Chen J.

收藏 | 浏览/下载：16/0 | 提交时间：2013/03/25

Two-axis optoelectronic tracking equipments generally use such mode that azimuth and pitch system are independently controlled. It leads to the two structures completely uncoupled therefore and reduces the state space dimension. But the main problem is that the rotational inertia of azimuth is much larger than that of pitch it is an effective control mode to the two-axis photoelectric tracking equipments. which leads its dynamic tracking performance is worse. So to find a more suitable mechanics and more effective control strategy is necessary. Considering the tracking ability this paper designs BMC (bandwidth mutual compensation) to uniformly correct the error of both the azimuth and pitch system in real time it is realized by cross coupling control to the azimuth and pitch. The simulation result verified that compared with classical uncoupling system BMS not only guarantees the state space dimension but improves systematic tracking performance about 2

铷喷泉钟组的系统搭建与性能评估 学位论文 OAI收割
作者: 董日昌

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收藏 | 浏览/下载：41/0 | 提交时间：2018/12/26

原子频标 atomic frequency standard 铷原子喷泉钟 rubidium atom clock 误差评估 uncertainty evaluation 受激拉曼双光子跃迁 the stimulated Raman two-photon transition 实时噪声补偿 the real-time noise compensation