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浏览/检索结果: 共7条,第1-7条 帮助

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Virtual velocity loop based on MEMS accelerometers for optical stabilization control system 期刊论文  OAI收割
Optical Engineering, 2017, 卷号: 56, 期号: 8, 页码: 085101
作者:  
Ren, Wei;  Deng, Chao;  Mao, Yao;  Ren, Ge
  |  收藏  |  浏览/下载:26/0  |  提交时间:2018/11/20
Reentry guidance based on feedback linearization (EI CONFERENCE) 会议论文  OAI收割
2011 International Conference on Electronics, Communications and Control, ICECC 2011, September 9, 2011 - September 11, 2011, Ningbo, China
Li D.-W.
收藏  |  浏览/下载:35/0  |  提交时间:2013/03/25
This paper presents a new reentry guidance algorithm for RLV (Reusable Launching Vehicle). The algorithm consists of two integrated components: trajectory planning algorithm and tracking algorithm. The most striking feature of algorithm here lies in that both planning and tracking are executed directly in height-velocity space  which is different from the methodology of configuration of drag in traditional shuttle guidance. In the session of trajectory planning  all trajectory constraints can be expressed with upper bound and lower bound in height-velocity space  then a linear interpolation is carried to search the nominal trajectory satisfying the requirement of downrange and target constraints. Then the tracking algorithm uses feedback linearization method to track this nominal profile and meet all constraints. Another typical feature of this algorithm is the strategy of downrange extension using FPA (flight path angle) controller to fulfill the requirement of large downrange. Proper combination of planning-tracking algorithm and FPA controller can bring great flexibility and adaptability to reentry guidance. The algorithm is proved to be robust enough to accommodate the model error and noises in the dynamics. 2011 IEEE.  
The research on servo control technology of O-E theodolite based on angular acceleration sensor (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
Wei L.; Jin G.; Juan C.
收藏  |  浏览/下载:26/0  |  提交时间:2013/03/25
A new servo control methods for O-E theodolite is presented in this paper. The methods integrates optimally feed forward and feedback control  and adopts acceleration delay compensation based on velocity delay compensation  then achieves servo control of O-E theodolite effectively. Furthermore  Angular acceleration sensor is applied as information resources  and adaptive filter is formed to provide with feed forward control signal in the methods. For double closed loop servo control system of O-E theodolite  the location correction loop and velocity correction loop are analyzed and designed. Simulation and experimental results show that comparing with traditional methods  this servo control methods can improve significantly tracking precision and stability of O-E theodolite. 2010 IEEE.  
Slip motor speed control system based on LPC2136 and low cost CMOS camera (EI CONFERENCE) 会议论文  OAI收割
2010 IEEE International Conference on Advanced Computer Control, ICACC 2010, March 27, 2010 - March 29, 2010, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States
作者:  
Yang S.-W.
收藏  |  浏览/下载:25/0  |  提交时间:2013/03/25
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.
收藏  |  浏览/下载:35/0  |  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.  
Global smooth solutions of the quasi-linear wave equation with internal velocity feedback 期刊论文  OAI收割
SIAM JOURNAL ON CONTROL AND OPTIMIZATION, 2008, 卷号: 47, 期号: 4, 页码: 2044-2077
作者:  
Zhang, Zhi-Fei;  Yao, Peng-Fei
  |  收藏  |  浏览/下载:23/0  |  提交时间:2018/07/30
Experimental study of contact transition control incorporating joint acceleration feedback 期刊论文  OAI收割
IEEE/ASME Transactions on Mechatronics, 2000, 卷号: 5, 期号: 3, 页码: 292-301
作者:  
Xu WL(徐卫良);  Han JD(韩建达);  Tso, S.K.
收藏  |  浏览/下载:93/0  |  提交时间:2012/05/29