Development and control for a reaction wheel system driven by permanent magnet synchronous motor

This paper presents the robust current and torque controls for a satellite reaction wheel driven by permanent magnet synchronous motor (PMSM). First, the motor nominal key parameters are estimated, and the DSP-based motor drive is established. Then a winding current control scheme is proposed, wherein a traditional two-degrees-of-freedom controller (2DOFC) is augmented by an internal model feedback controller or a robust tracking error cancellation controller. Good sine-wave current tracking and back electromotive force (EMF) rejection performances are obtained. The similar robust control approach is also applied to perform the motor observed torque control with quick and close tracking response.