Energy-based adaptive flight controller for improved coordinated longitudinal control

Date

2021-01-01

Author

Kutlu, Aykut
Yayla, Metehan
Kutay, Ali Türker

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

180
views

0
downloads

In this study, we propose an adaptive longitudinal flight controller in the sequential loop closure framework using the energy principles. In contrary to traditional SISO classical control theory based flight control architectures, the proposed control is a MIMO controller where the elevator and throttle controls are used simultaneously to track the velocity and altitude commands. An energy management system works in conjunction with an outer loop adaptive controller to achieve the desired velocity and altitude tracking and decoupling performances. With the adaptation in the outer loop, the effects of uncertainties acting on the slow states of the aircraft (e.g. airspeed) are eliminated with the throttle control. In the inner loop adaptive controller, satisfactory pitch response has been attained with the elevator control by suppressing the undesired effects of model uncertainties on the fast aircraft modes such as short period. Eventually, improved coordinated longitudinal control has been accomplished with all the loops closed without any high-frequency oscillations in the pitch response. The efficacy of the proposed algorithm is illustrated through numerical simulations with a high-fidelity nonlinear aircraft model.

URI

https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85100317550&origin=inward
https://hdl.handle.net/11511/90921

Conference Name

AIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2021

Collections

Department of Aerospace Engineering, Conference / Seminar

Suggestions

OpenMETU
Core

Flutter Optimization of a Wing-Engine System with Passive and Active Control Approaches Asadi, Davood; Farsadi, Touraj; Kayran, Altan (2021-04-01) In the present study, the flutter performance of a composite thin-walled beam wing-engine system is optimized by implementing two different control approaches: 1) passive open-loop and 2) active closed-loop control. Sequential quadratic programming and genetic algorithm methods are applied in the optimization process. In the passive control method, variable stiffness is acquired by constructing laminates of thin-walled beam with curvilinear fibers having prescribed paths. The goal is to exploit the desirabl...
Vibration control of a smart piezo beam via gain scheduling H-infinity controller based on LPV model TURAN, ABDULLAH; Şahin, Melin; ONAT, CEM (2021-01-01) In this study, a gain scheduling H-infinity controller based on Linear Parameter Varying (LPV) model was designed and applied to suppress the first out of plane bending vibration of a variable parameter smart beam equipped with Lead-Zirconium-Titanium (PZT) patches. This paper also introduces a novel LPV modelling technique which defalcates the zeros of the system. The controller design was carried out in three successive steps. In the first step, the variable parameter model of the beam with an added mass ...
Assessment of alternative simulation techniques in nonlinear time history analyses of multi-story frame buildings: A case study Karim Zadeh Naghshineh, Shaghayegh; Askan Gündoğan, Ayşegül; Yakut, Ahmet (2017-07-01) In regions with sparse ground motion data, simulations provide alternative acceleration time series for evaluation of the dynamic response of a structure. Different ground motion simulation methods provide varying levels of goodness of fit between observed and synthetic data. Before using the seismologically acceptable synthetic records for engineering purposes, it is critical to investigate the efficiency of synthetics in predicting observed seismic responses of structures. For this purpose, in this study ...
Model Predictive Control for a PUC5 based Dual Output Active Rectifier Makhamreh, Hamza; Trabelsi, Mohamed; Kukrer, Osman; Abu-Rub, Haitham (2019-01-01) In this paper, an effective finite-control-set model predictive controller (FCS-MPC) is proposed for an active dual output rectifier. The topology under study is a 5-level packed U cells (PUC5) rectifier. The optimized cost function is designed based on the capacitors' voltages and current errors. The Capacitors' reference voltages and the peak value of the reference grid current are used to normalize the errors within the cost function. The peak value of the current reference is generated by a PI controlle...
ANALYTICAL DYNAMIC-RESPONSE OF ELASTIC CAM-FOLLOWER SYSTEMS WITH DISTRIBUTED-PARAMETER RETURN SPRING Ünlüsoy, Yavuz Samim; Tümer, Sami Turgut (1993-09-01) An analytical method of solution for the high-speed dynamic response of a lumped/distributed parameter model for cam-follower systems is developed. The model combines the distributed parameter model of the return spring with a viscously damped, single degree-of-freedom, lumped model of the elastic follower train. The cam event is considered as a periodic motion, of period 360 deg, and is represented by its Fourier series approximation. Linear systems approach utilizing four-pole parameter representation of ...

Citation Formats

A. Kutlu, M. Yayla, and A. T. Kutay, “Energy-based adaptive flight controller for improved coordinated longitudinal control,” presented at the AIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2021, Virtual, Online, 2021, Accessed: 00, 2021. [Online]. Available: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85100317550&origin=inward.