Robust Adaptive Attitude Stabilization of a Fighter Aircraft in the Presence of Input Constraints

The problem of attitude stabilization of a fighter aircraft is investigated in this paper. The practical aspects of a real physical system like existence of external disturbance with unknown upper bound and actuator saturation are considered in the process of controller design of this aircraft. In o...

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Main Authors: M. Bahmani, T. Binazadeh
Format: Article
Language:English
Published: Shahid Rajaee Teacher Training University 2016-07-01
Series:Journal of Electrical and Computer Engineering Innovations
Subjects:
Online Access:https://jecei.sru.ac.ir/article_575_96512cbf1e3ce7d71ac7f9cd3bc8f97a.pdf
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author M. Bahmani
T. Binazadeh
author_facet M. Bahmani
T. Binazadeh
author_sort M. Bahmani
collection DOAJ
description The problem of attitude stabilization of a fighter aircraft is investigated in this paper. The practical aspects of a real physical system like existence of external disturbance with unknown upper bound and actuator saturation are considered in the process of controller design of this aircraft. In order to design a robust autopilot in the presence of the actuator saturation, the Composite Nonlinear Feedback (CNF) controller along with the Adaptive Integral Sliding Mode (AISM) controllerand the new robust controller that is called AISM-CNF control law is proposed. The CNF part of controller is used for stabilization of the nominal system and also improvement of the transient performance by considering the actuator saturation. The AISM part guarantees robustness against the model uncertainties and/or external disturbances. Since in the proposed approach, the upper bound of the uncertain terms is estimated and therefore there is no need to the prior knowledge of the upper bound of the model uncertainties. Finally, simulation results show the performance of the proposed AISM-CNF controller in term of attitude stabilization of fighter aircraft, robustness, and the good characteristics of the transient responses of the autopilot system in spite of actuator saturation and external disturbance.
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spelling doaj.art-6b457eb0c1fd449eabaaf783a8ab51d02022-12-22T00:38:36ZengShahid Rajaee Teacher Training UniversityJournal of Electrical and Computer Engineering Innovations2322-39522345-30442016-07-014214915510.22061/jecei.2017.575575Robust Adaptive Attitude Stabilization of a Fighter Aircraft in the Presence of Input ConstraintsM. Bahmani0T. Binazadeh1Department of Electrical and Electronic Engineering, Shiraz university of Technology, Shiraz, Iran.Department of Electrical and Electronic Engineering, Shiraz university of Technology, Shiraz, Iran.The problem of attitude stabilization of a fighter aircraft is investigated in this paper. The practical aspects of a real physical system like existence of external disturbance with unknown upper bound and actuator saturation are considered in the process of controller design of this aircraft. In order to design a robust autopilot in the presence of the actuator saturation, the Composite Nonlinear Feedback (CNF) controller along with the Adaptive Integral Sliding Mode (AISM) controllerand the new robust controller that is called AISM-CNF control law is proposed. The CNF part of controller is used for stabilization of the nominal system and also improvement of the transient performance by considering the actuator saturation. The AISM part guarantees robustness against the model uncertainties and/or external disturbances. Since in the proposed approach, the upper bound of the uncertain terms is estimated and therefore there is no need to the prior knowledge of the upper bound of the model uncertainties. Finally, simulation results show the performance of the proposed AISM-CNF controller in term of attitude stabilization of fighter aircraft, robustness, and the good characteristics of the transient responses of the autopilot system in spite of actuator saturation and external disturbance.https://jecei.sru.ac.ir/article_575_96512cbf1e3ce7d71ac7f9cd3bc8f97a.pdffighter aircraftinput constraintscomposite nonlinear feedback (cnf)adaptive integral sliding mode (aism)
spellingShingle M. Bahmani
T. Binazadeh
Robust Adaptive Attitude Stabilization of a Fighter Aircraft in the Presence of Input Constraints
Journal of Electrical and Computer Engineering Innovations
fighter aircraft
input constraints
composite nonlinear feedback (cnf)
adaptive integral sliding mode (aism)
title Robust Adaptive Attitude Stabilization of a Fighter Aircraft in the Presence of Input Constraints
title_full Robust Adaptive Attitude Stabilization of a Fighter Aircraft in the Presence of Input Constraints
title_fullStr Robust Adaptive Attitude Stabilization of a Fighter Aircraft in the Presence of Input Constraints
title_full_unstemmed Robust Adaptive Attitude Stabilization of a Fighter Aircraft in the Presence of Input Constraints
title_short Robust Adaptive Attitude Stabilization of a Fighter Aircraft in the Presence of Input Constraints
title_sort robust adaptive attitude stabilization of a fighter aircraft in the presence of input constraints
topic fighter aircraft
input constraints
composite nonlinear feedback (cnf)
adaptive integral sliding mode (aism)
url https://jecei.sru.ac.ir/article_575_96512cbf1e3ce7d71ac7f9cd3bc8f97a.pdf
work_keys_str_mv AT mbahmani robustadaptiveattitudestabilizationofafighteraircraftinthepresenceofinputconstraints
AT tbinazadeh robustadaptiveattitudestabilizationofafighteraircraftinthepresenceofinputconstraints