제어로봇시스템학회:학술대회논문집
- 2005.06a
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- Pages.1228-1233
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- 2005
Optimal Guidance Law Using Exact Linearization (ICCAS 2005)
- Ogawa, Takahiro (Department of Aerospace Engineering College of Science and Technology, Nihon University) ;
- Uchiyama, Kenji (Department of Aerospace Engineering College of Science and Technology, Nihon University) ;
- Shimada, Yuzo (Department of Aerospace Engineering College of Science and Technology, Nihon University)
- Published : 2005.06.02
Abstract
In this paper, we present a new guidance law for a reusable launch vehicle (RLV) that lands vertically after reentry. In our past studies, a guidance law was developed for a vertical/soft landing to a target point. The guidance law, which is analytically obtained, can regenerate a trajectory against disturbances because it is expressed in the form of state feedback. However, the guidance law does not necessarily guarantee a vertical/soft landing when a dynamical system such as an RLV includes a nonlinear phenomenon owing to the atmosphere of the earth. In this study, we introduce a design of the guidance law for a nonlinear system to achieve a vertical/soft landing on the ground using the exact linearization method and solving the two-point boundary-value problem for the derived linear system. Numerical simulation confirmed the validity of the proposed guidance law for an RLV in an atmospheric environment.