Minimum Impulse Thruster Valve Design and Development

Huftalen, Richard L.; Platt, Andrea L.; Parker, Morgan J.; Yankura, G.

doi:10.2514/6.2003-4930

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“…In the long coasting period, the upper stage is controlled by means of on/off operating thrusters. These thrusters apply a constant force on the spacecraft and they can be merely switched on and off [4]. In addition, there exists a minimum time for which the thruster can remain open, which is imposed by the characteristics of the various (mechanical and electrical) components involved in the actuation.…”

Section: Introductionmentioning

confidence: 99%

A hybrid model predictive control approach to attitude control with minimum-impulse-bit thrusters

Sopasakis

Bernardini

Strauch

et al. 2015

2015 European Control Conference (ECC)

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Abstract-This paper studies an important aspect of attitude control for a launcher's upper stage: the minimum impulse bit (MIB), that is, the minimum torque that can be exerted by the thrusters. We model this effect using principles of hybrid systems theory and we design a hybrid model predictive control scheme for the attitude control of a launcher during its long coasting period, aiming at minimizing the number of thrusters' actuations. We apply the proposed methodology to a nonlinear model of a typical upper stage with multi-payload capability.

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Section: Introductionmentioning

confidence: 99%