Development of a Magnetically-Suspended Antenna Pointing Mechanism-System Recovery in Case of Electromagnet/Sensor Damage in a Redundant System

The authors refer to a magnetically-suspended, tetrahedron—shaped antenna pointing system as a " T-MAPS." A digital controller with a digital signal processor (DSP controller) was developed to improve the T-MAPS mechanism reliability. A DSP controller is considered to be absolutely essential for system recovery in case of an electromagnet/ sensor damage in a redundant system. This paper presents the magnetic suspension control structure, damage identification algorithm, decoupling compensation, and functional test results for the DSP controller. According to these results, the T—MAPS has adaptability to mechanism parameter change, and always maintains good dynamic behavior conditions.