Abstract
A micro-piggyback satellite, “μ-LabSat”, was launched by an H-IIA rocket on 14 December 2002. μ-LabSat is a bias momentum micro-satellite with two wheels, a configuration that is not normally capable of three-axis attitude maneuvers. This paper describes an algorithm that has been developed to enable such maneuvers and presents the results of its evaluation by numerical simulation and in-orbit experiment.