Attitude and Orbit Control of a Very Large Geostationary Solar Power Satellite

Robust optimal sun-pointing control of a large solar power satellite

“…In stabilized mode, the Euler attitude angles and angular rates are sufficiently small, thus the attitude kinemics can be written as [10] ̇…”

“…(2), (4) and (5) into Eq. (1) and omitting all terms of second and higher order, the linearized dynamical equations of the sun-pointing SPS are given by [10]:…”

“…However, the roll and yaw motions are strongly coupled due to the timevarying roll and yaw gravity-gradient torques. Other disturbances which affect SPS sun-pointing, such as the solarradiation-pressure perturbation and the microwave-reflection perturbation, can be modeled as [10] (7a)…”

“…Oglevie investigated a wide variety of SPS control techniques, such as space-constructed momentum wheels, gravity-gradient stabilization and various reaction control thruster typologies [9]. An integrated orbit and attitude control system of the Abacus SPS located in geostationary Earth orbit (GEO) was devised by Wie and Roithmayr [10]. In this work, perturbations were included and a PID controller plus filter was designed for continuous sun-pointing.…”

“…McNally et al proposed a new geosynchronous Laplace-plane orbit (GLP) [11], and then discussed the attitude dynamics and sun-pointing control of the SPS located in the GEO and GLO respectively [12]. In order to resolve the angular-momentum storage problem, a quasi-inertial sun-pointing control was developed by Elrod [13], and further investigated by Juang and Wang [14], and Wie and Roithmayr [10]. Zhou and Fan studied an active vibration control of a tethered SPS during attitude maneuvers [15].…”