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http://dx.doi.org/10.5139/JKSAS.2015.43.8.757

On the Experimental Modeling of Focal Plane Compensation Device for Image Stabilization of Small Satellite  

Kang, Myoung-Soo (Department of Aerospace and Mechanical Engineering, Graduate School at KAU)
Hwang, Jai-Hyuk (Department of Aerospace and Mechanical Engineering, Korea Aerospace University)
Bae, Jae-Sung (Department of Aerospace and Mechanical Engineering, Korea Aerospace University)
Park, Jean-Ho (Department of Aerospace and Mechanical Engineering, Graduate School at KAU)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.43, no.8, 2015 , pp. 757-764 More about this Journal
Abstract
Mathematical modeling of focal plane compensation device in the small earth-observation satellite camera has been conducted experimently for compensation of micro-vibration disturbance. The PZT actuators are used as control actuators for compensation device. It is quite difficult to build up mathematical model because of hysteresis characteristic of PZT actuators. Therefore, the compensation device system is assumed as a $2^{nd}$ order linear system and modeled by using MATLAB System Identification Toolbox. It has been found that four linear models of compensation device are needed to meet 10% error in the input frequency range of 0~50Hz. These models describe accurately the dynamics of compensation device in the 4 divided domains of the input frequency range of 0~50Hz, respectively. Micro-vibration disturbance can be compensated by feedback control strategy of switching four models appropriately according to the input frequency.
Keywords
PZT Actuator; Satellite Camera; Image Stabilization; Focal Plane Compensation Device;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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