Augmented fixed‐time observer‐based continuous robust control for hypersonic vehicles with measurement noises

• DOI: 10.1049/iet-cta.2018.5823
• Publication Date: 2018-12-08T02:17:51Z
• Authors: Jinlin Sun; Jianqiang Yi; Zhiqiang Pu
• Keywords: Observer (physics); Fixed wing

This study is concerned with the augmented fixed‐time observer based adaptive super‐twisting cruise control for flexible air‐breathing hypersonic vehicles (FAHVs). First, input–output linearisation technique employed to derive a oriented FAHV dynamic model. Then, controller designed track reference velocity and altitude commands when faced various uncertainties disturbances. In addition, novel gain adaptation law constructed as supplement of avoid overestimating values gains. The keeps gains adapting dynamically guarantee finite‐time convergence sliding variables in presence disturbances unknown boundaries. Moreover, observers are estimate true measured states filter out high‐frequency sensor noises. Thus, fixed time these achieved independently initial estimation errors. Finally, combined together ensure superior tracking performances FAHVs under effects uncertainties, disturbances, measurement