Development of the model-/sensor-based nonlinear dynamic inversion control technique for highly maneuverability fighter
- Authors
- Kim, C.-S.; Yang, I.; Koh, G.-O.; Kim, B.-S.
- Issue Date
- 2018
- Publisher
- Institute of Control, Robotics and Systems
- Keywords
- Angular Acceleration; Desired Dynamics; NDI(Nonlinear Dynamic Inversion); OBM(On-Board Model)
- Citation
- Journal of Institute of Control, Robotics and Systems, v.24, no.7, pp.639 - 654
- Indexed
- SCOPUS
KCI
- Journal Title
- Journal of Institute of Control, Robotics and Systems
- Volume
- 24
- Number
- 7
- Start Page
- 639
- End Page
- 654
- URI
- https://scholarworks.bwise.kr/gnu/handle/sw.gnu/13026
- DOI
- 10.5302/J.ICROS.2018.18.0049
- ISSN
- 1976-5622
- Abstract
- This paper evaluates the flying qualities and stability of the nonlinear dynamic inversion (NDI) control law, in which angular acceleration is analyzed by a mathematical model or measured by an angular acceleration sensor based on the T-50 Advanced Supersonic Trainer model. The NDI has been considered the suitable nonlinear control technique for fighter aircrafts in aerospace industries, since it replaces nonlinear characteristics with the user-defined desired dynamics by inverting the original plant dynamics. To obtain the angular acceleration of the aircraft, two approaches are considered in this paper: estimating from the analytic model (model-based) or measuring from the angular acceleration sensor (sensor-based). To evaluate the robustness of the model-based or sensor-based NDI, the sensitivity analyses with model uncertainties and wide Center-of-Gravity (CG) travel situations are considered. The evaluation results of flying qualities and stability show that the sensor-based NDI considerably degrades the stability margin and pitch equivalent time delay compared with model-based NDI. However, it has the advantages of decreasing the inter-axes coupling effects and improving the robustness throughout the overall flight envelope. ? ICROS 2018.
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Collections - 공학계열 > Division of Mechanical and Aerospace Engineering > Journal Articles
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