Title :
A comparison of accuracy and efficiency of three control strategy design methods for low energy moon return mission
Author :
Liu Yue ; Jing Wuxing ; Xiao Yingying
Author_Institution :
Harbin Inst. of Technol., Harbin, China
fDate :
May 31 2014-June 2 2014
Abstract :
In this paper a comparison is made between three thrust steering strategy design methods for the low energy moon return mission. The dynamic equations are given under the elliptical four body problem and the virtual satellite method applied to establish the control model. Because of the narrow launch window and weak stability of the low energy return orbit, the spacecraft must inject into the target orbit with a high accuracy while it´s necessary to finish the optimization within a short time. So the efficiency and accuracy of the three methods, the changing thrust angle iteration method, the maximum principle optimization method and the Gauss pseudo spectral method are analyzed in a simulation example. From the result, it´s found that, though the changing thrust angle iteration method cannot give an accurate control strategy but the high efficiency of the algorithm can provide a preferable original value for the other methods to decreases the amount of computation in solving the accurate optimal control strategy.
Keywords :
aerospace control; iterative methods; maximum principle; optimisation; stability; steering systems; Gauss pseudospectral method; control strategy design methods; dynamic equations; elliptical four body problem; low energy moon return mission; low energy return orbit weak stability; maximum principle optimization method; narrow launch window; optimal control strategy; spacecraft; thrust angle iteration method; thrust steering strategy design methods; virtual satellite method; Mathematical model; Moon; Optimal control; Optimization methods; Orbits; Space vehicles; Low energy; Moon; Optimization; Orbital transfer; Return; Virtual satellite method;
Conference_Titel :
Control and Decision Conference (2014 CCDC), The 26th Chinese
Conference_Location :
Changsha
Print_ISBN :
978-1-4799-3707-3
DOI :
10.1109/CCDC.2014.6852326