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http://dx.doi.org/10.5050/KSNVE.2016.26.3.323

Real-time Unbalance Moment Compensation Method for Line of Sight(LOS) Stabilization Control System  

Jo, Sihun (Agency for Defense Development)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.26, no.3, 2016 , pp. 323-330 More about this Journal
Abstract
This paper describes real-time unbalance moment compensation method for line of sight(LOS) stabilization control systems. The factors of system inertia, frictions and unbalance moment affect the control accuracy of drive systems that are equipped to on the move(OTM) platforms requiring LOS stabilization function. In case of the unbalance moment among those factors is continuously changed as variation of relative angle between gravity vector and drive torque vector. Then, consideration of the effect in real-time is very complicate. Therefore, its effect should be designed to be minimized, however, designing it almost zero is impossible in real condition. In other words, it is hard to achieve target performance overcoming stability issue of highly unbalanced systems. To solve these problems, this paper proposes calculation method of unbalance moment by using measured sensor data for LOS stabilization control and its use for control compensation. Also, kinematical converting process and control structure for compensation are explained. The effectiveness of the proposed method as variation of unbalance moment is verified under simulation circumstance modeled by assuming LOS control system with 2-axis gimbal structure.
Keywords
Line of Sight(LOS); Stabilization Control; Unbalance Moment; Compensation Controller;
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Times Cited By KSCI : 1  (Citation Analysis)
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1 Kang, M. S., Lim, J. K., Choi, Y. J., Lyou, J., Seok, H. D. and Kim, B. U., 2005, Adaptive Disturbance Compensation Control for Heavy Load Target Aiming Systems to Improve Stabilization Performances, Transactions of the Korean Society for Noise and Vibration Engineering, Vol 15, No. 11, pp. 1303~1310.   DOI
2 Lee, D. O., Kang, T.-H., Kim, H.-S. and Park, K.-W., 2001, Nonlinear Control of High Precision Pointing Stabilization Systems with Heavy Loads, Journal of the Korea Institute of Military Science and Technology, Vol. 4, No. 2, pp. 157~178.
3 Kang, M. S. and Cho, Y. W., 2010, Stabilization Control of Line of Sight of OTM Antenna, Trans. KIEE, Vol. 59, No. 11, pp. 2073~2082.
4 Kennedy, P. J. and Kennedy, R. L., 2003, Direct Versus Indirect Line of Sight(LOS) Stabilization, IEEE Trans. on Control Systems Technology, Vol. 11, NO. 1, pp. 3~15.   DOI
5 Marton, L. and Lantos, B., 2007, Modeling, Identification and Compensation of Stick Slip Friction, IEEE Trans. on Industrial Electronics, Vol. 54, No. 1, pp. 511~521.   DOI
6 Kang, M. S., 1999, Precision Stabilization Control of Servo System by Using Friction Compensation, J. of the Korean Society of Precision Engineering, Vol. 16, No. 3, pp. 109~115.