کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1718273 | 1013836 | 2013 | 10 صفحه PDF | دانلود رایگان |
A nonlinear robust control strategy is developed for Six-Degree-of-Freedom (6DOF) Reusable Launch Vehicles (RLV) which is nonlinear, multivariable, strong coupling, and includes uncertain parameters and external disturbances. Firstly, a reentry guidance law is designed to generate feasible guidance commands which are then tracked by second-order sliding mode attitude controller designed based on quasi-continuous high-order sliding mode theory. Furthermore, in order to reduce control chattering, the virtual control is introduced into the design of third-order sliding mode attitude controller which achieves higher tracking accuracy and less control chattering. Finally, 6DOF integrated guidance and control simulation results for X-33 vehicle are presented to demonstrate the effectiveness of the proposed control strategy in tracking the guidance commands as well as achieving safe and stable reentry flight.
Journal: Aerospace Science and Technology - Volume 28, Issue 1, July 2013, Pages 198–207