Finite-horizon servo SDRE for super-maneuverable aircraft and magnetically-suspended CMGs

Autor:	Behdad Geranmehr, Kamran Vafaee, Saeed Rafee Nekoo
Rok vydání:	2015
Předmět:	Engineering business.industry Mechanical Engineering Aerospace Engineering Control engineering Gyroscope Optimal control law.invention Control moment gyroscope Attitude control law Control theory Integrator Riccati equation business Servo
Zdroj:	Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering. 230:1075-1093
ISSN:	2041-3025 0954-4100
DOI:	10.1177/0954410015603076
Popis:	This work proposes a finite-horizon servo state-dependent Riccati equation (SDRE) to control two classes of aerospace systems. The SDRE is widely used for nonlinear and optimal control of different systems in theory and practice. In this work, an augmented integrator was added to the SDRE (servo SDRE) to increase performance of the controller, especially to decrease steady-state error. The finite-horizon structure developed for servo SDRE features the advantages of both methods. Attitude control of super-maneuverable aircraft was modeled and simulated. It was then compared with a conventional SDRE controller to show the advantages of the proposed combination. A magnetically suspended double-gimbal control moment gyroscope was tested using the finite-horizon servo SDRE because the control moment gyroscope is the primary attitude control actuator for spacecraft. The results showed that the servo structure improved the performance and decreased the error of the SDRE using a simple systematic approach. The finite-horizon option completes the task sooner than common controllers.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::516d83492f215a2e3ea349dfc37f0228 https://doi.org/10.1177/0954410015603076 Zobrazit plný text záznamu