Semipassive Pitch Attitude Control of Satellites by Solar Radiation Pressure

Pitch attitude control of earth-pointing satellites by solar radiation pressure is investigated. Development of a controller that is simple to implement and yet promises asymptotic stability of the system is presented. The analysis establishes the capability of the solar controller in stabilizing even the gravitationally unstable equilibrium orientation. The semipassive nature of the system promises an increased operational lifetime for the satellite.