Abstract:

In order to compensate for the effects of friction in IOC (Intersatellite Optical Communication) coarse pointing subsystem of PAT(Pointing,Acquisition,Tracking) system,a PD controller is used to obtain a stable trajectory first,then an augmented neural network is used to approximate the friction function on line to compensate for it.In addition,the traditional neural network and adaptive robust terms are used to eliminate the effects of approximation error of neural network and external disturbances.

Key words: intersatellite , optical , communication , （IOC）,  , pointing, acquisition, tracking , （PAT）,  , friction , compensation,  , neural , network,  , adaptive , robust , term