NDLI: Sliding mode attitude control using thrusters and pulse modulation for the ASTER mission

Content Provider	Springer Nature Link
Author	Silva, André Luís Sarli, BruVictorino Paglione, Pedro
Copyright Year	2014
Abstract	ASTER, the first Brazilian mission to the deep space, targets the exploration of the triple asteroid system known as 2001 SN263. The mission requires an attitude controller robust and capable of coping with the non-linearities and the uncertainties present during the exploration phase. For such requirements, this paper studies the applicability of two controllers, designed based on the sliding mode control (SMC) technique, one of the controllers include an adaptive law used to compensate for the spacecraft’s inertia variation. One application is performed where gain scheduling is used for controlling two different phases: exit from tumbling and track a dynamic reference. The actuators of the attitude control loops are impulsive thrusters. They are activated by pulse width modulation (PWM) or pulse width pulse frequency modulation (PWPFM). Simulation studies, performed in realistic scenarios, show that the SMC can maintain stability and performance when these modulation techniques are used to approximate the continuous commands. It is also shown that PWM can provide better performance, but at a higher control cost. In this sense, PWPFM is more appropriate with respect to the fuel consumption and activation times.
Starting Page	535
Ending Page	556
Page Count	22
File Format	PDF
ISSN	01018205
Journal	Computational and Applied Mathematics
Volume Number	34
Issue Number	2
e-ISSN	18070302
Language	English
Publisher	Springer Basel
Publisher Date	2014-05-16
Publisher Place	Basel
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	PWPFM Dynamical systems in classical and celestial mechanics Computational Mathematics and Numerical Analysis Non-linear control $n$-body problems Digital systems Attitude Sliding mode PWM Asteroid mission Dynamical systems in control Nonlinear equations and systems, general ASTER Mathematical Applications in Computer Science Mathematical programming methods Adaptive or robust stabilization Control of mechanical systems Applications of Mathematics Mathematical Applications in the Physical Sciences Nonlinear systems
Content Type	Text
Resource Type	Article

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