title: On spacecraft maneuvers control subject to propellant engine modes.
abstract: The paper attempts to address a new control approach to spacecraft maneuvers based upon the modes of propellant engine. A realization of control strategy is now presented in engine on mode (high thrusts as well as further low thrusts), which is related to small angle maneuvers and engine off mode (specified low thrusts), which is also related to large angle maneuvers. There is currently a coarse-fine tuning in engine on mode. It is shown that the process of handling the angular velocities are finalized via rate feedback system in engine modes, where the angular rotations are controlled through quaternion based control (QBCL)strategy in engine off mode and these ones are also controlled through an optimum PID (OPIDH) strategy in engine on mode.
authors.affiliation: Department of Control Engineering, Faculty of Electrical Engineering, South Tehran Branch, Islamic Azad University (IAU), No. 209, North Iranshahr St., P.O. Box 11365/4435, Tehran, Iran. Electronic address: mazinan@azad.ac.ir.
authors.forename: A H
authors.initials: AH
authors.lastname: Mazinan
keywords: Control allocation; Finite burn; Guidance system; High–low set of thrusters; OPID(H) and QBC(L) strategies; Overactuated spacecraft; PWPF modulator; Propellant engine on–off modes