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Stability Analysis of Three-Loop Autopilot with respect to IMU Position and C.G Variation Rate in Guided Missiles
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 Title & Authors
Stability Analysis of Three-Loop Autopilot with respect to IMU Position and C.G Variation Rate in Guided Missiles
Kwon, Hyuck-Hoon; Kim, Yoon-Hwan; Park, Bong-Gyun;
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 Abstract
Three-Loop autopilot is generally used for the acceleration control of guided missiles. Because the acceleration command to the three-loop autopilot is given as values at the center of gravity, feedback information of IMU should be obtained at the same position. However, the position of IMU might not be located at the center of gravity due to the sub-system assignment. This paper presents the stability analysis of three-loop autopilot with respect to the arbitrary position of IMU and variation rate of center of gravity. Gain and phase margins are calculated for several trim points for general anti-tank missiles.
 Keywords
IMU Position;Three-Loop Autopilot;Stability Analysis;Variation Rate of C.G.;
 Language
Korean
 Cited by
 References
1.
Zarchan, P., Tactical and Strategic Missile Guidance, 5th ed., Vol. 219, AIAA, Reston, VA, 2007, pp.461-539.

2.
F. W. Nesline and M. L. Nesline, "Homing Missile Autopilot Response Sensitivity to Stability Derivative Variations," Proceedings of 23rd Conference on Decision and Control, Las Vegas, NV, Dec. 1984.

3.
C. H. Lee, B. E. Jun and J. I. Lee, "Study of Similarity between Linear and Nonlinear Missile Autopilot via Three Loop Topology," KSAS Spring Conference, pp. 422-425, 2015. 04.