Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5472570 | Acta Astronautica | 2017 | 9 Pages |
Abstract
A robust entry guidance law based on terminal sliding mode and second-order differentiator is designed for trajectory tracking in this paper. The bank angle is regarded as the control variable. A novel nonlinear compound controller is designed to make the system with the trajectory-tracking error and its rate as states be input-to-state stable (ISS) with respect to uncertainties. The terminal sliding mode controller is designed to the problem of entry guidance by using the second-order differentiator to estimate the total disturbances. The proposed nonlinear compound control law by employing the second-order differentiator and the terminal sliding mode controller, provide robustness, higher control precision. Also, simulation results are presented to illustrate the effectiveness of the control strategy.
Related Topics
Physical Sciences and Engineering
Engineering
Aerospace Engineering
Authors
Juan Dai, Ai Gao, Yuanqing Xia,