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CORC

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Adaptive sliding-mode-assisted disturbance observer-based decoupling control for inertially stabilized platforms with a spherical mechanism 期刊论文
Iet Control Theory and Applications, 2022, 卷号: 16, 期号: 12, 页码: 1194-1207
作者:  D. P. Tian;  M. Y. Wang;  F. C. Wang and R. Xu
收藏  |  浏览/下载：0/0  |  提交时间：2023/06/14
Predefined-time sliding mode control for rigid spacecraft 期刊论文
Guangxue Jingmi Gongcheng/Optics and Precision Engineering, 2021, 卷号: 29, 期号: 12, 页码: 2891-2901
作者:  H.-Y. Sai;  Z.-B. Xu;  S. He;  E.-Y. Zhang and C. Qin
收藏  |  浏览/下载：4/0  |  提交时间：2022/06/13
Hex-Rotor无人飞行器执行单元的故障分析与飞行控制 学位论文
博士: 中国科学院大学, 2015
作者:  赵常均
收藏  |  浏览/下载：48/0  |  提交时间：2015/11/30
基于臂式机构的空间望远镜稳像控制研究 学位论文
博士: 中国科学院大学, 2014
杨维帆
收藏  |  浏览/下载：31/0  |  提交时间：2014/08/21
无人机载光电平台相对角位移测量与分析研究 学位论文
博士: 中国科学院大学, 2014
王子辰
收藏  |  浏览/下载：100/0  |  提交时间：2014/08/21
基于控制力矩陀螺的卫星姿态机动与稳定控制 学位论文
博士: 中国科学院大学, 2014
常琳
收藏  |  浏览/下载：86/0  |  提交时间：2014/08/21
Trajectory tracking control of a quad-rotor UAV based on command filtered backstepping (EI CONFERENCE) 会议论文
2012 3rd International Conference on Intelligent Control and Information Processing, ICICIP 2012, July 15, 2012 - July 17, 2012, Dalian, China
Gong X.; Bai Y.; Peng C.; Zhao C.; Tian Y.
收藏  |  浏览/下载：27/0  |  提交时间：2013/03/25
A quad-rotor unmanned aerial vehicle is an under-actuated  strong coupled nonlinear system with parameters uncertainty and unknown external aerodynamic disturbance. The trajectory tracking control system with a nested double-loops structure is designed in this paper according to the coupling characteristic between the attitude angles and translational position. A PD control algorithm is proposed in the translational outer-loop to export the desired attitude signals to the attitude inner-loop. An adaptive backstepping control algorithm is designed in the inner-loop with respect to the uncertain rotational inertia and un-modeled disturbance  while in order to reduce the computational complexity the command filtered approach is introduced into the designing procedure. And finally  the numerical simulation results are presented for the trajectory tracking stabilization of a Quad-rotor  which demonstrates the excellent performance of the proposed control system and illustrate its robustness in face of disturbance and uncertain parameters. 2012 IEEE.  
Optical axis stabilization of semi-strapdown seeker based on disturbance observer (EI CONFERENCE) 会议论文
2011 International Conference on Information and Automation, ICIA 2011, June 6, 2011 - June 8, 2011, Shenzhen, China
Sun G.; Zhu M.; Yin S.; Jia H.
收藏  |  浏览/下载：18/0  |  提交时间：2013/03/25
Based on the kinematics of semi-strapdown seeker  the framework coordinate of the seeker is established. The optical axis stability equation of semi-strapdown seeker is deduced by using attitude transformation matrix. Then  the stability control principle block diagram of semi-strapdown seeker is shown based on the stability equation. The main factors that influence the stabilization precision are pointed out  such as friction disturbance  velocity-measuring noise and missile disturbance. In order to improve the stabilization precision  disturbance observer was proposed in semi-strapdown seeker stability control. The low frequency external disturbance and high frequency velocity measurement noise are effectively restrained by the disturbance observer as shown in hardware-in-loop simulation  and optical axis stabilization precision is improved nearly 20 times and 5 times due to two different frequencies with same amplitude. 2011 IEEE.  
Dynamic coupling analysis and modeling for stabilized platform of rolling-pitching seeker (EI CONFERENCE) 会议论文
2011 International Conference on Electric Information and Control Engineering, ICEICE 2011, April 15, 2011 - April 17, 2011, Wuhan, China
Ai X.; Liu H.; Jiang Z.; Jia H.
收藏  |  浏览/下载：9/0  |  提交时间：2013/03/25
Missile's attitude change will be delivered to visual axis through stabilized platform during maneuvering flight  and the missile vibration will be an interference source to visual axis stabilization. In order to solve this problem  the coupling relationship between missile attitude and visual axis is obtained by Coordinate transformation. When the seeker stably tracks a target  the angular velocity of visual axis in inertial space is zero  so the relative angular velocity of roll axis and pitch axis can be derived for servo control. According to Oura dynamics equation  the dynamic models of roll axis and pitch axis were established and kinetic equations of two axises were obtained. The dynamic models can provide theoretical basis to developing research of servo control system and structural optimization design of stabilized platform. Finally  some measures could reduce the dynamic coupling between the framework was given. 2011 IEEE.  

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