# 외부짐발 선구동에 의한 EOTS의 기동성 개선

• Yim, Jong-Bin (Dept. of Electronics Eng., Chungnam National University) ;
• Kim, Sung-Su (Agency for Defense Development) ;
• Lyou, Joon (Dept. of Electronics Eng., Chungnam National University)
• Accepted : 2013.08.04
• Published : 2013.10.01

#### Abstract

An EOTS (Electro-Optical Tracking System) provides stabilized images while tracking a moving target. This paper presents a novel concept of driving the outer gimbal first for improving the maneuverability of an EOTS, contrary to the conventional inner gimbal mode. It has the advantages of faster positioning performance and stable operation in Nadir-point. Analysis of frequency responses reveal that the present scheme results in a wider control bandwidth and larger gain margin, compared to those of the previous one. The actual experimental results confirm that the maneuvering is stable although the input command has a large angular acceleration.

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