Abstract:

Singularity questions of singlegimbal control moment gyros (SCMGs) are developed. A new singularity measure is presented. A null motion is deduced using the measure. To different configurations of SCMGs, the measure with the same range of value represents the error sensitivity in numerical inverse operation on a Jacobian matrix and has comparability. These conclusions are tested by simulation. The compact formula of the null motion using the common determinant measure is also given.

Key words: spacecraft , control,  , control , moment , gyro,  , singularity,  , steering , law,  , angular , momentum , body,  , failure