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http://dx.doi.org/10.5139/JKSAS.2002.30.6.069

Dynamic Response and Control of Airship with Gust  

Woo, G.A. (부산대학교 항공우주공학과 대학원)
Park, I.H. ((주) LG전자, GSM 단말 연구소)
Oh, S.J. (부산대 항공우주공학과, 기계기술연구소)
Cho, K.R. (부산대 항공우주공학과, 기계기술연구소)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.30, no.6, 2002 , pp. 69-77 More about this Journal
Abstract
To acquire the dynamic response and design the controller of the airship, the longitudinal motion of the airship with respect to the vertical gust, which is the nonlinear system, was studied. The effects of the apparent mass and moment of the airship delay the dynamic response and the settling time, which are slower than those of conventional airplanes. The current object of the airship is designed to cruise at 500~1000m altitude. At that height, the atmospheric conditions are generally unstable by wind gust. In this paper, it has been studied for the case of vertical gust, since the apparent mass effects are dominant in has been studied for the case of vertical gust, since the apparent mass effects are dominant in that plane. In addition to the study of the dynamic responses of the airship, the controller was designed using the PID-controller. When the gust was applied, airship responses were recovered of equilibrium states. However, it takes too ling time for recovery and the speed of airship is reduced. So, the aim in this paper was to fasten the recovery speed and to get back the cruising velocity. The control parameters were determined from the stability mode analysis, and the control inputs were the thrust and the elevator deflection angle.
Keywords
Airship; Apparent Mass; Apparent Inertia; PID-controller; Actuator;
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