中国科学院机构知识库网格系统: 检索

Prescribed Performance Tracking Control of Time-Delay Nonlinear Systems With Output Constraints 期刊论文 OAI收割
IEEE/CAA Journal of Automatica Sinica, 2024, 卷号: 11, 期号: 7, 页码: 1557-1565
作者:

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收藏 | 浏览/下载：6/0 | 提交时间：2024/06/07

Nonlinear systems output constraints prescribed performance reference tracking time delays

A quantized output feedback MRAC scheme for discrete-time linear systems 期刊论文 OAI收割
AUTOMATICA, 2022, 卷号: 145, 页码: 10
作者: Zhang, Yanjun; Zhang, Ji-Feng

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收藏 | 浏览/下载：20/0 | 提交时间：2023/02/07

Model reference adaptive control Discrete-time Output tracking Quantized output feedback

Quantized-output feedback model reference control of discrete-time linear systems 期刊论文 OAI收割
AUTOMATICA, 2022, 卷号: 137, 页码: 8
作者: Zhang, Yanjun; Zhang, Ji-Feng; Liu, Xiao-Kang; Liu, Zhen

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收藏 | 浏览/下载：27/0 | 提交时间：2022/07/25

Model reference control Discrete-time Output tracking Quantized-output feedback

Quantized-output feedback model reference control of discrete-time linear systems 期刊论文 OAI收割
AUTOMATICA, 2022, 卷号: 137, 页码: 8
作者: Zhang, Yanjun; Zhang, Ji-Feng; Liu, Xiao-Kang; Liu, Zhen

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收藏 | 浏览/下载：14/0 | 提交时间：2023/02/07

Model reference control Discrete-time Output tracking Quantized-output feedback

On convergence of active disturbance rejection control for a class of uncertain stochastic nonlinear systems 期刊论文 OAI收割
INTERNATIONAL JOURNAL OF CONTROL, 2019, 卷号: 92, 期号: 5, 页码: 1103-1116
作者: Wu, Ze-Hao; Guo, Bao-Zhu

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收藏 | 浏览/下载：54/0 | 提交时间：2020/01/10

Stochastic nonlinear systems active disturbance rejection control extended state observer stochastic disturbance reference tracking stability

Degraded Planary Tracking Control of an Omnidirectional Vectored-Thruster Aerostat 期刊论文 OAI收割
Journal of Aerospace Engineering, 2019, 卷号: 32, 期号: 4, 页码: 1-12
作者: Whidborne, James F.; Chen L(陈丽); Liu JG(刘金国); Duan DP(段登平); Dong, Qi

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收藏 | 浏览/下载：62/0 | 提交时间：2019/04/13

Vectored-thruster aerostat Degraded tracking control Underactuated Virtual reference point

Feedforward Control Based on Error and Disturbance Observation for the CCD and Fiber-Optic Gyroscope-Based Mobile Optoelectronic Tracking System 期刊论文 OAI收割
ELECTRONICS, 2018, 卷号: 7, 期号: 10, 页码: 223
作者: Yong Luo; Wei Ren; Yongmei Huang; Qiunong He; Qiongyan Wu

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收藏 | 浏览/下载：53/0 | 提交时间：2019/08/23

feedforward control mobile optoelectronic tracking system error observer disturbance observer tracking performance anti-disturbance ability model reference

Image registration based on Mexican-hat wavelets and pseudo-Zernike moments (EI CONFERENCE) 会议论文 OAI收割
2012 World Automation Congress, WAC 2012, June 24, 2012 - June 28, 2012, Puerto Vallarta, Mexico
作者: Liu Y.; Liu Y.; Liu Y.

收藏 | 浏览/下载：36/0 | 提交时间：2013/03/25

Image registration is a key technique in pattern recognition and image processing and it is widely used in many application areas such as computer vision remote sensing image fusion and object tracking. A method for image registration combining Mexican-hat wavelets and pseudo-Zernike moments is proposed. Firstly feature points are extracted using scale-interaction Mexican-hat wavelets in the reference image and sensed image respectively. Then pseudo-Zernike moments are used to match them and classical RANSAC used to eliminate the wrong matches. And then the well match points are used to estimate the best affine transform parameters by least squares minimization. At last the sensed image is transformed and resampled to accomplish the image registration. The experiments indicate that the proposed algorithm extracts feature points and matches them exactly and eliminates wrong matched points effectively and achieves nice registration results. 2012 TSI Press.

Design and calibration of the solar irradiance monitor (EI CONFERENCE) 会议论文 OAI收割
International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications, May 24, 2011 - May 26, 2011, Beijing, China
作者: Yang D.-J.; Gong C.-H.; Wang Y.-P.; Ye X.; Fang W.

收藏 | 浏览/下载：26/0 | 提交时间：2013/03/25

The solar irradiance monitor (SIM) with the design accuracy of 5 used to monitor the secular changes of the total solar irradiance on FY-3 satellite takes the sun-scanning measurement method on-orbit. Compared to the sun-tracking measurement method this method simplifies the structure and cuts the cost but the measuring accuracy is affected by the sun-synchronous orbit sunlight incidence angle and the installing angle of the SIM in the satellite. Through the ground calibration experiment studies on the affection of different sunlight incidence angles to the measurement accuracy. First by the satellite tool kit (STK) simulation software simulates the orbital parameters of the sun-synchronous satellite and calculates the Sun ascension and declination at any time. By the orbit coordinate transformation matrix gets the components of the Sun vectors to the axes of the satellite and base on the components designs the field of view and the installing angles of the SIM. Then designs and completes the calibration experiment to calibrate the affection of the incidence angles. Selecting 11 different angles between the sunlight and the satellite X-axis measures the total solar irradiance by the SIM at each angle and compares to the irradiances of the SIAR reference radiometers and gets the coefficient curves of the three channels of the SIM. Finally by the quadratic fitting gets the correction equations on the incidence angles: R 1=5.7110-52 -2.45310 -3+1.0302 R2=2.8410-5-1. 96510-3+1.0314 and R3 =1.7210 -52-4.18410-4+0.9946. The equations will aimprove the on-orbit measurement accuracy of the solar irradiance and are very important to the on-orbit data processing after the satellite launched. 2011 SPIE.

Nonlinear control design for system with mechanical resonance based on two tracking-differentiators (EI CONFERENCE) 会议论文 OAI收割
2010 IEEE International Conference on Mechatronics and Automation, ICMA 2010, August 4, 2010 - August 7, 2010, Xi'an, China
作者: Li J.; Li Y.; Li Y.; Li Y.; Li Y.

收藏 | 浏览/下载：20/0 | 提交时间：2013/03/25

A nonlinear control strategy for controlling a motion system with mechanical resonance is presented in this paper. A mathematical model of the servo system is derived according to the parameters of an actual system. By using two Tracking-Differentiators reference input and system output are tracked and their differential signals are given simultaneously. A nonlinear PD control law in velocity loop is designed based on non-smooth feedback. The simulation results show that the control law is superior remarkably in performance to linear PD control law and the classical PID control law. Tracking-Differentiator resolves the contradiction between rapidity and overshoot of system response. The nonlinear PD control law improves system dynamic performance and intensifies the ability of disturbance rejection. The control design achieved in this paper makes the servo system more robust. 2010 IEEE.