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Modeling of a dynamic dual-input dual-output fast steering mirror system

Frontiers of Information Technology & Electronic Engineering 2017年第10期18卷 1488-1498页

作者： Hong SONG Jia-heng ZHANG Ping YANG Hao-cai HUANG Shu-yue ZHAN Teng-jun LIU Yi-lu GUO Hang-zhou WANG Hui HUANG Quan-quan MU Mei-fen FANG Ming-yuan YANG Ocean College Zhejiang UniversityZhoushan 316021China School of Digital Media&Design Hangzhou Dianzi UniversityHangzhou 310018China State Key Laboratory of Applied Optics Changchun Institute of OpticsFine Mechanics and PhysicsChinese Academy of SciencesJilin 130033China Blue-Science Opto-Electronics Co.Ltd. Hangzhou 310018China Core Tomorrow Science&Technology Co.Ltd. Harbin 150080China

A modeling method is proposed for a dynamic fast steering mirror(FSM) system with dual inputs and dual outputs. A physical model of the FSM system is derived based on first principles, describing the dynamics and coupling between the inputs and outputs of the FSM system. The physical model is then represented in a state-space form. Unknown parameters in the state-space model are identified by the subspace identification algorithm, based on the measured input-output data of the FSM system. The accuracy of the state-space model is evaluated by comparing the model estimates with measurements. The variance-accounted-for value of the state-space model is better than 97%, not only for the modeling data but also for the validation data set, indicating high accuracy of the model. Comparison is also made between the proposed dynamic model and the conventional static model, where improvement in model accuracy is clearly observed. The model identified by the proposed method can be used for optimal controller design for closed-loop FSM systems. The modeling method is also applicable to FSM systems with similar structures.

关键词： fast steering mirror Dynamic system Input-output coupling,Physical modeling Subspace identification

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fast steering mirror Sliding Mode Control Based on Prescribed Performance

Fast Steering Mirror Sliding Mode Control Based on Prescribe...

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第43届中国控制会议

作者： Haowen Li Liang Li Zhibin Li College of Electrical Engineering and Automation Shandong University of Science and Technology

In order to improve the control performance of the fast steering mirror in laser communication,a prescribed performance control method is studied. First,the fast steering mirror system is analyzed,and the model parameters are obtained according to the open-loop step response. Then,the fixed-time extended state observer is used to estimate the angular velocity and disturbance in real time. Next,error transformation function and performance constraint function are introduced to construct a fast nonsingular terminal sliding mode surface,realizing constrained control of the system output error. Furthermore,the stability of the designed controller is proven through Lyapunov theorem. Finally,the effectiveness and feasibility of the proposed method is verified through experiments.

关键词： fast steering mirror extended state observer prescribed performance sliding mode control

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Improvement of Response Speed Characteristics of fast steering mirror based on Zero Phase Error Tracking Controller

Improvement of Response Speed Characteristics of Fast Steeri...

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第三十九届中国控制会议

作者： Lin Wang Shuning Liang Chunyang Wang Department of Electronic and Information Engineering Changchun University of Science and Technology Institute of Information Perception and Control Xi'an Technological University

In view of the high frequency characteristics of the residual disturbance after the frame of the photoelectric platform stability, the fast response speed characteristic of fast steering mirror is required. The dynamic model of the fast steering mirror is established by system identification experiment. Speed feedback control is introduced to increase the damping of the system. Then based on the PID closed-loop control, the zero phase error tracking control strategy is adopted to further improve the response speed characteristics of the fast steering mirror. The dynamic performance of the control system is tested. In terms of fast speed characteristic, the fast steering mirror can meet the requirements of the photo-electric tracking system. From the practical experiments, the error is reduced from 9 pixels to 1 pixel by using the proposed control strategy. The control strategy not only has distinct improvement in performance, but also has high application value in practical engineering.

关键词： High frequency characteristics fast response speed characteristic fast steering mirror Speed feedback control PID closed-loop control Zero phase error tracking controller

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Research on Improving Directional Stability for Airborne Laser Designator

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Semiconductor Photonics and Technology 2009年第4期15卷 235-240,246页

作者： DANG Li-ping TANG Shu-gang ZHOU Zhou Institute of Navigation Northwestern Polytechnical University Xi'an 710072 CHN Military Office Stationed in Northwestern Polytechnical University Xi'an 710072 CHN Institute of Surveying and Mapping Xi'an 710063 CHN

The major purpose of this paper is to reduce the laser directional deviation of laser designator on a moving platform.A new method of inhibiting the laser beam positional error caused by platform movement and vibration is *** this method,quadrant detector(QD)and fast steering mirror are combined to measure the angle between laser designator axis and the line-of-sight of the target,then a control signal composed with the angle errors is generated to aim the axis of the laser designator at the target *** is a real time processing method and it is suitable for airborne laser-guided weapons with second-class guiding time.

关键词： directional stability laser beam fast steering mirror quadrant detector

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